ぉHindiき Free Ashfall

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Published by Kathy Kaldenberg
Resume: Retired librarian. Reader. Info lit disciple. I block marketers.

Score - 291 votes / 2 hour 10minutes / Drama / average Rating - 7,7 / 10 star / Indonesia / Spoiler: He woke up and it was all a dream.

 

Ashfall taal. Ashfall meaning. This disaster plus action movie is exciting from big disaster scene near the beginning to the very end. The effects are as good as any Western blockbuster and the battle sequences are exciting and well choreographed. The characters are funny and quite endearing. The story is more complex than expected with a good amount of humour and some political subplot involving nukes North South China and US. Good use of some big name Korean stars.
Worth a watch.

Ashfall showtime. Ashfall korean drama. Ashfall english subtitle. 對河正宇最有感，角色的呈現很貼近平凡人，而且被河正宇詮釋的很有趣，劇情無冷場，很想二刷！！. Ashfall series. สวัสดีต้นปีครับ พี่. Ashfall fossil beds hours. GUIDELINES ON PREPAREDNESS BEFORE, DURING AND AFTER AN ASHFALL This document has been prepared by the International Volcanic Health Hazard Network (IVHHN), Cities and Volcanoes Commission, GNS Science and the United States Geological Survey (USGS) to promote the safety of those who experience volcanic ashfall. It details procedures to follow if warning of a volcanic ashfall is given, recommends what to do during ashfall, and what methods are most effective for cleaning up volcanic ash after the event. Contents Essential items to stock before an ashfall Actions to be taken in preparedness What to do if volcanic ash is falling Why should we clean up the ash? What precautions should be taken before cleaning up ash? Cleaning up: outside Cleaning up: inside Vehicles Sources and further information 1 Essential items to stock before an ashfall A sustained ashfall may keep people housebound for hours or even days. Keep these items in your home in case of an ashfall: Dust masks and eye protection (see IVHHN Recommended Masks document at). Enough drinking water for at least 72 hours - one gallon (3-4 litres) per person per day. Enough non-perishable food for at least 72 hours for family and pets. Plastic wrap (to keep ash out of electronics). If available, a battery-operated radio and extra batteries. Lanterns or torches (flashlights) and extra batteries. If cold, extra wood for a fireplace or stove. If cold, extra blankets and warm clothing. Extra stocks of medication for both family and pets. First aid kit. Cleaning supplies such as a broom, vacuum cleaner with spare bags and filters, and a shovel. A small amount of money (as sources such as ATMs and banks may not be operating). Consider that you could be stuck in your vehicle, so store emergency supplies in your vehicle too. 2. Actions to be taken in preparedness Close doors and windows. Place damp towels at door thresholds and other draft sources. Tape draughty windows. Protect sensitive electronics and do not uncover until the environment is totally ash-free. Disconnect drainpipes/downspouts from gutters to stop drains clogging, but allowing ash and water to empty from gutters onto the ground. If you use a rainwater collection system for your water supply, disconnect the tank prior to ash falling. If you have chronic bronchitis, emphysema or asthma, stay inside and avoid unnecessary exposure to the ash. Ensure livestock have clean food and water. If you have children, know your school's emergency plan and have indoor games and activities ready. 3. What to do if volcanic ash is falling Don't panic - stay calm. Stay indoors. If outside, seek shelter (e. g. in a car or building). Use a mask, handkerchief or cloth over your nose and mouth. If warning is given before ashfall starts, go home from work. If at work when ashfall starts, stay indoors until the ash has settled. Do not tie up phone lines with non-emergency calls. Listen to your local radio for information on the eruption and clean-up plans. Do not wear contact lenses as these will result in corneal abrasion. If there is ash in your water, let it settle and then use the clear water. If there is a lot of ash in the water supply, do not use your dishwasher or washing machine. Water contaminated by ash will usually make drinking water unpalatable before it presents a health risk. You may eat vegetables from the garden, but wash them first. 4. Why should we clean up the ash? Volcanic ash is a great nuisance and gets everywhere in the house and office, including inside televisions, computers, cameras and other valuable equipment, where it can cause irreparable damage. Ash is different from ordinary house dust. Its sharp, crystalline structure causes it to scratch and abrade surfaces when it is removed by wiping or brushing. In wet weather the ash deposits are dampened down and the air can be clear, but in drier weather ash can easily be stirred up and remobilised by wind and traffic. As a result suspended dust levels become much higher and can reach levels potentially harmful to health. Rainfall and wind are effective in removing the ash and grass and other plants will eventually bind it to the soil, but with large ashfalls this process is too slow and the ash must be cleaned up and taken away from populated areas. In addition, wind may also bring ash into areas which were previously clean so ash may be present in the environment for months or even years following an eruption. 5. What precautions should be taken before cleaning up ash? Those undertaking clean up operations should always wear effective dust masks (see IVHHN Recommended Masks document). In fine-ash environments, wear goggles or corrective eyeglasses instead of contact lenses to protect eyes from irritation. Lightly water down the ash deposits before they are removed by shovelling, being careful not to excessively wet the deposits on roofs, causing excess loading and danger of collapse. Dry brushing can produce very high exposure levels and should be avoided. Use extra precaution on ladders and roofs. The ash makes surfaces much more slippery, consequently many people have died from falls while cleaning ash from their roofs. Be aware of the extra load caused by standing on an already overloaded roof - tread carefully. It is preferable to clean roofs before more than a few centimetres of ash have accumulated. Where possible use a harness. 6. Cleaning up: outside Keep ash out of buildings, machinery, vehicles, downspouts, water supplies, and wastewater systems (for example, storm drains) as much as possible. The most effective method to prevent ash-induced damage to machinery is to shut down, close off or seal equipment until ash is removed from the immediate environment, though this may not be practical in all cases. Coordinate clean up activities with your neighbours and community-wide operations. After an ashfall, remove ash from roofs in a timely manner to prevent streets from being repetitively cleaned. Do: Put on a recommended mask before starting to clean. If you don't have one, use a wet cloth. In dry conditions, wear eye protection (such as goggles) during clean-up. Moisten the ash with a sprinkler first. This will help to stop the wind remobilizing it. Use shovels for removing the bulk of thick deposits of ash (over 1 cm or so). Stiff brooms will be required to remove lesser amounts. Place the ash into heavy duty plastic bags, or onto trucks if available. Since most roofs cannot support more than four inches (10 cm) of wet ash, keep roofs free of thick accumulation. Volcanic ash is slippery. Use caution when climbing on ladders and roofs. Guttering systems clog very easily so, if fitted underneath your roof, sweep away from the gutters. Cut grass and hedges only after rain or light sprinkling, and bag clippings. Seek advice from public officials regarding disposal of volcanic ash in your community. In most cases, ash should be separated from normal rubbish for collection for disposal at a designated location - mixing ash with normal rubbish can result in damage to collection vehicles and take up space in landfills. Dampen ash in yards and streets to reduce suspension of ash, however try to use water sparingly - do not soak the ash. Widespread use of water for clean-up may deplete public water supplies. Follow requests from public officials regarding water use during cleanup operations. Remove outdoor clothing before entering a building. Don't: Do not soak the ash as it will cake into a hard mass, making clean-up more difficult. On roofs the added weight of the water will increase the risk of roof collapse. Do not dump the ash in gardens or on the roadside. Do not wash the ash into the guttering, sewers or storm drains. (It can damage waste water treatment systems and clog pipes). Do not drive unless absolutely necessary - driving stirs up the ash. Furthermore, ash is harmful to vehicles. 7. Cleaning up: inside In general, surfaces should be vacuumed to remove as much ash as possible from carpets, furniture, office equipment, appliances, and other items. Portable vacuum systems equipped with high-efficiency particulate filtering systems are recommended whenever possible. The severity of ash intrusion depends on the integrity of windows and entrances, the air intake features, and the care exercised to control the transport of ash into a building or home via shoes and clothing. Care should also be taken to avoid further contamination during the emptying, cleaning, and maintenance of vacuum equipment. In hot climates, where windows are permanently open, or absent, clean up of houses may be needed several times per day. Clean-up inside should only be undertaken after the outside areas have been well cleared. Clean your house when public-works crews are cleaning the areas outside your house as a co-ordinated approach Put on your mask before starting to clean. If you don't have one, use a wet cloth. Ensure good ventilation by opening all doors and windows before you start to clean. Only use one entrance to the building while cleaning to ensure occupants do not bring in ash into clean areas. Use a dustless method of cleaning such as washing with water and an effective detergent/wetting agent. Damp rag techniques or vacuuming should be used whenever possible. After vacuuming, carpets and upholstery maybe cleaned with a detergent shampoo. Avoid excess rubbing action because the sharp ash particles may cut textile fibres. Glass, porcelain enamel and acrylic surfaces may be scratched if wiped too vigorously. Use a detergentsoaked cloth or sponge, and dab rather than wipe. High-shine wood finishes will be dulled by the fine grit. Vacuum surfaces and then blot with a wet cloth. A tack cloth used by furniture refinishers should also work well. Ash-coated fabrics should either be rinsed under running water and then washed carefully, or they can be taken outside and beaten to remove the ash. Soiled clothing will require extra detergent. Wash small loads of clothing, using plenty of water so the clothes will have room to move freely in the water. Brush or shake clothes before washing. Moisten thick ash deposits on hard floors and place in bags (avoid sweeping dry ash). Use a damp mop or wet cloth to clean hard floors. Keep children indoors and discourage play in dusty settings. Clean your computer, TV and radio equipment using a vacuum cleaner or compressed air (see USGS guidelines () on looking after electronics following an ashfall). Switch off the main power supply to the machine before carrying out this operation. For several months after an ashfall, filters may need replacing often. Air conditioner and furnace filters need careful attention. Clean refrigerator air intakes. Clean any surface that may blow air and recirculate the ash. Stove fans and vents should be cleaned thoroughly. Keep children indoors and discourage play in dusty settings. Keep pets indoors. If pets go out, brush them before letting them indoors. Do not use floor sweepers with side brushes to clear aisles and floors because they may re-entrain dust particles into the air. Do not clean by blowing with compressed air or dry sweeping as ash will be remobilised into the air. Do not use fans or electric clothes dryers which might remobilise ash. 8. Vehicles If possible, avoid driving. Ash is harmful to vehicles, the roads may be slippery and driving suspends ash into the air which causes low visibility and may be harmful or irritating to others. If driving is crucial, drive slowly, use headlights and ample windscreen fluid. Using wipers on dry ash may scratch the windscreen. In heavier ashfall, driving should only be undertaken in an emergency. Use water bottles and a cloth to clean the windscreen as required. This may be every few tens of metres. Change oil, oil filters and air filters frequently (every 50-100 miles (80-160 kms) in heavy dust; every 500- 1000 miles (800-1600 kms) in light dust. Do not drive without an air filter. If you cannot change it, clean it by blowing air from the inside out. Do not change it until you notice a loss of power to the engine, as a dirty filter is more effective than a clean one. Cleaning your car - clean ash from inside your engine, boot/trunk and spare tyre storage area as well as the seating area. Brushing ash off the car can cause scratching. Have a service garage clean wheel brake assemblies every 50-100 miles (80-160 kms) for very severe road conditions, or every 200-500 miles (320-800 kms) for heavy dust conditions. The brake assemblies should be cleaned with compressed air (800-1600 kms). Have a service garage clean alternators with compressed air after heavy accumulation, every 500 to 1000 miles, or after severe dust exposure. Clean the vehicle, including the engine, radiator, and other essential parts daily, if necessary, using water to flush the ash. Wash the engine compartment with a garden hose or steam cleaner. Be sure to seal off air intakes and electrical components before cleaning. 9. Sources and further information Further information on the logistics of cleaning up volcanic ash, applicable to companies, larger organisations and local governments, can be found on the United States Geological Survey website, at The International Volcanic Health Hazard Network (IVHHN) was founded in 2003, and is a group of experts who have a common aim of understanding and addressing the health effects of volcanic emissions. Expert members work in a range of disciplines such as volcanology, public health and toxicology. For further information, visit the IVHHN website (). Many resources, such as a guide to recommended dust masks, are available on the website. This guide is based on the following sources: Residents' guide to the state of the Soufriere Hills volcano following the scientific assessment of July 1998 and the dangers of volcanic ash, with tips for cleaning up ash.  Emergency Department, St Johns, Montserrat, West Indies, August 1998. Volcanic ashfall: how to be prepared for an ashfall.  USGS Cascades Volcano Observatory, Vancouver, Washington, November 1999. Ash particles and home clean-up problems: advice from the University of Idaho.  Mt. St. Helens Technical Information Network Bulletin 7, Federal Coordinating Network, May 1980. Health criteria for reoccupation of ashfall areas in Montserrat.  Report to the Department for International Development, London, by P. J. Baxter and R. L. Maynard, October 1998. The mitigation of ashfall damage to public facilities: lessons learned from the 1980 eruption of Mt. Helens.  Washington Federal Emergency Management Agency, Region X, by W. H. Mayer, Regional Director, 1984. Preventive health measures in volcanic eruptions.  By P. Baxter, American Journal of Public Health 76, pp 84-90, 1986. Acknowledgements This document was written by Dr Claire Horwell of the University of Cambridge, UK, with assistance from staff of the United States Geological Survey and GNS Science, New Zealand. The IVHHN is grateful to the Leverhulme Trust, UK, for funding associated meetings, and to the following people for reviewing this guideline document: Dr Bob Maynard, Department of Health, London, UK; Steve Brantley, USGS Hawaiian Volcano Observatory, Hawai'i, USA; Dr David Johnston, GNS Science, Lower Hutt, New Zealand; Scott Barnard, University of Canterbury, Christchurch, New Zealand; Dr Peter Baxter, Institute of Public Health, University of Cambridge, UK; Dr Carol Stewart, Wellington, New Zealand.

Everyone is talking about how they dont have the classic music or characters and Im out here like, “Why did Mulan. the main character of the story. only say like five words in her own damn trailer? ”. Ashfall darla. Ashfall korean movie. Ashfall quezon city.

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↓↓↓↓↓↓↓↓↓↓↓↓↓ ⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆ Actor - Byung-Hun Lee User ratings - 7 of 10 writer - Hae-jun Lee, Byung-seo Kim Ashfall is a movie starring Byung-Hun Lee, Jung-woo Ha, and Hye-jin Jeon. Stagnant since 1903, at an elevation of 2, 744 m, a volcano erupts on the mythical and majestic Baekdu Mountain 2019 You know they trying to ban this movie, I'm shocked it even got made. Ashfall mike mullin. Ashfall movie review. I see mandarin. The enemy of ironman 3. The scenes are taken from the movie. Shutter Island. Ashfall press conference. I was so shock earlier why the skies are so dark when it is not even raining. I checked the satellite images for possible storms but jesus christ I never expected that an active volcano in our region errupted! Stay safe always, My fellow filipinos. Help one another. We'l get through these. Ashfall nebraska state park. No way:D. Sad... may God see you through. Ashfalls fossil beds. Ashfall philippines. Is it just me or does this look like a straight-to-dvd movie. Ashfall korean movie english subtitle. Ashfall aussies. “These are not people, theyre actor” Oh really? Did you watch of the stupid “Fake! These are paid actor” jokes. Suzy 😍😍😍😍. Ashfall country ledgestone. Ashfall in manila. Below my expectations. Suppose the disastrous erruption was kept far way behind the scnene. The core is strongly focus on the "rescue" mission in which i think the emphasis was bluntly executed. The pulling in of the westerner and the Chinese into the play just not adequately boost up the hype to gain excitement. I noticed most of the facial expression in the movie is very "plastic" except for my idol BHLee. Worth watching. The plotline, special effect are perfect. This movie is box office in SK, Taiwan, china, hongkong. Another good movie from SK beside Parasite. Definitely, going to watch this. 10:13 the true story we know as Balto. That spoiler kinda revealed too much😂😂. The movie looks great though I'll watch. Started off at a slow pace but that's because the background needed to be in place. Mid way thru, it was edge of the seat and Lee Byung Hun was just stellar. Still as charismatic as ever, his character made the movie interesting. Plot was exciting and even my teen daughters enjoyed the movie. Appeal to all ages. Must watch. Ashfall book 4. Plot Ashfall - 2019 A volcano on Baekdu Mountain suddenly erupts. Pandemonium ensues on the Korean peninsula, with more eruptions predicted in the area. To prevent another disaster, Jeon Yoo Kyung plans an operation based on a theory by Professor Kang Bong Rae. He had has studied Baekdu Mountain and its possible eruptions. Jo In Chang is the captain of a special forces team. He is tasked to take part in the operation, which holds the fates of South and North Korea in the balance. Jo In Chang contacts Lee Joon Pyeong who is part of the Ministry of People's Armed Forces of North Korea. Meanwhile, Jo In Chang's wife Choi Ji Young is alone in Seoul. She struggles to survive against the disaster. (Source: AsianWiki) Edit Translation English Español Português Nederlands Polski Bahasa Indonesia Watch Ashfall Youtube, Ashfall myasiantv, Ashfall dramacool, Ashfall kissasian, dramanice, dramatv, dramafire, viki, asianwiki, newasiantv, fastdrama, viewasian. Ashfallow citadel last door. Ashfall darla. Ashfall nebraska. Now everybody knows that the small cratered island seen from Tagaytay is not the volcano. End of discussions. Salamat po sa gawin kopo yan. I MY FRICKEN GOD YES FINALLY I'VE BEEN WAITING FOR THIS 🙏🙏🙏🙏🙏🙏🙏. This movie really similar with dead days on webtoon. Ashfall showtimes. Ashfallow citadel. Stagnant since 1903, at an elevation of 9000′, a volcano erupts on the mythical and majestic Baekdu Mountain. Watch Free Movies, December 4, 2019 About Ashfall General Casting Crew Production Runtime 128 Minutes (02 Hours 08 Minutes) Release Date 2019-12-19 2019 December 19 Lee Byung-hun Lee Jun-pyeong Ma Dong-seok Kang Bong-rae Jeon Hye-jin Jeon Yu-gyeong Lee Kyung-young General Choi Lee Sang-won Park Tae-sik Kang Shin-chul Lieutenant Han Han Su-hyeon Sergeant Kim Jeon Do-yeon Jun-Pyeong's wife Original Music Composer Bang Jun-seok Costume Design Cho Sang-kyung Director of Photography Kim Ji-yong Executive Producer Kim Yong-hwa Sound Supervisor Choi Tae-young Co-Executive Producer Kim Young-hoon Visual Effects Jin Jong-hyen Makeup & Hair Choi Hye-lim Production Design Kim Byung-han Special Effects Makeup Artist Hwang Hyo-gyun De Club van Lelijke Kinderen Watch Free Movies, September 27, 2019 Victoria & Abdul Watch Free Movies, October 6, 2019 Can You Ever Forgive Me? Watch Free Movies, July 18, 2019 Once Upon a Time in Hollywood Watch Free Movies, July 2, 2019 The Saint Watch Free Movies, November 9, 2019. That was so scary. They should have ended the trailer to point when she said, Someone is sitting in that chair. Thank you po Doc Willie and Doc Liza for the advices. God Bless all. This dude should have been Luke Cage instead of that big fluffy Ashfallow citadel walkthrough. We got a new captain america who can replace sam wilson. 🤣🤣🤣😂😂🤣🤣🤣🤣🤣. Ashfall suzy. GA SUKANYA DENGAN FILM KOREA SELATAN ITU TERLALU BERTELE2 DALAM BERCERITA DENGAN DIMASUKANNYA BERBAGAI SUBPLOT. อยากดูเรื่องนี้ เพราะ ซูจี น่าเกิ๊นน. I have a good feeling about this, a Disney Princess story turn into an epic war movie. Psychological thrillers, I love it. Ashfall korean movie. Bro shazwan bro #tellygeram ajak lepak2 borak santai tentang filem. harap dpt direalilasikan aminnn😉. You May Also Like HD 10, 000 BC (2008) A prehistoric epic that follows a young mammoth hunter’s journey through uncharted territory to secure the future of his tribe. The Enforcer (1976) Dirty Harry Callahan returns again, this time saddled with a rookie female partner. Together, they must stop a terrorist group consisting of angry Vietnam veterans. Country:  USA Hollow Point (2019) When his wife and daughter are senselessly murdered, a grieving man finds himself caught up in a war between a group of charismatic vigilantes and the crime that infests their… The Immortal Wars: Resurgence (2019) The war for freedom has just begun. Trikalypse joins forces with the rebel leader and her team of freedom fighters. They must now fight back to bring Dominion down and… The League of Extraordinary Gentlemen (2003) To prevent a world war from breaking out, famous characters from Victorian literature band together to do battle against a cunning villain. 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(1991) Recruited to join a top-secret mission for the Air Force, a renegade pilot finds himself coping with an incompetent admiral and a carefully selected squadron of flyers who are either… RED (2010) When his peaceful life is threatened by a high-tech assassin, former black-ops agent, Frank Moses reassembles his old team in a last ditch effort to survive and uncover his assailants. Country:  USA. Another Mandarin's experiment 🤨. Thank you Youtube for recommending this, im from the Philippines, i need this to keep my mind off things. Looks intriguing and Gary Oldman is an amazing actor I may have to go see this 😍. The old man luke cage. i like this. Main Actors: Lee Byung-hun Lee Jun-pyeong Ha Jung-woo Jo In-chang Ma Dong-seok Kang Bong-rae Jeon Hye-jin Jeon Yu-gyeong Bae Suzy Seo Ji-young Lee Kyung-young General Choi Kim Si-a Sun-ok Lee Sang-won Park Tae-sik Ok Ja-yeon Sergeant Min Choi Gwang-il President Jo Han-chul Colonel Kang Shin-chul Lieutenant Han Han Su-hyeon Sergeant Kim Lim Hyung-kook Chen Jeon Do-yeon Jun-Pyeong's wife Kim Yeon-gyo Nurse Jung Yun-ha Interpreter Directed by: Release Date: Dec 19, 2019 Genres: Comedy Adventure, Drama, Action Keywords: Sibling-Relationship volcano, natural disaster, volcano erupting, korean. At first... I was like say what? Then oh! wrong channel, it's a cola Ad. After sometime, Baam! you got 's a movie indeed. lol. Waited ages for this. Tried to watch it last week, but sheeesh. what happened guys? I gave up after about 25-30minutes. Ashfall movie download. Oh, come on, dude is naked, just move to the Russia. Ashfall Theatrical release poster Hangul 백두산 Hanja 白頭山 Revised Romanization Baekdusan Directed by Lee Hae-jun Kim Byung-seo Produced by Lee Hae-jun Kim Byung-seo Starring Lee Byung-hun Ha Jung-woo Ma Dong-seok Bae Suzy Jeon Hye-jin Production company Dexter Studios CJ E&M Distributed by CJ Entertainment Release date December 19, 2019 (South Korea) Running time 128 minutes [1] Country South Korea Language Korean Budget US$17. 7 million [2] [3] Ashfall ( Korean:  백두산; Hanja:  白頭山; RR:  Baekdusan), also known as: Mount Paektu, is a 2019 South Korean action film directed by Lee Hae-jun and Kim Byung-seo, starring Lee Byung-hun, Ha Jung-woo, Ma Dong-seok, Bae Suzy and Jeon Hye-jin. The film was released in December 2019 in South Korea. [5] [6] Plot [ edit] The volcano of Baekdu Mountain suddenly erupts, causing severe earthquakes in both North and South Korea. To prevent another disaster, Jeon Yoo-kyung ( Jeon Hye-jin) plans an operation based on a theory by Professor Kang Bong-rae ( Ma Dong-seok). Jo In-chang ( Ha Jung-woo) is the captain of a special forces team. Jo In-chang contacts Lee Joon-pyeong ( Lee Byung-hun) who is part of the Ministry of People's Armed Forces of North Korea as a spy. Meanwhile, Jo In-Chang's pregnant wife Choi Ji-young ( Bae Suzy) is alone in Seoul. Cast [ edit] Lee Byung-hun [7] [8] as Lee Joon-pyeong Ha Jung-woo [9] as Jo In-chang Ma Dong-seok [10] as Kang Bong-rae Bae Suzy [11] [12] as Choi Ji-young Jeon Hye-jin [13] as Jeon Yoo-kyung Production [ edit] Production on Ashfall ended on July 21 after five months of filming. Release [ edit] The film was released December 19, 2019 in South Korea and on December 20 in the US. The film is set to be released on December 24 in Taiwan, January 1, 2020 in Hong Kong, January 2 in Singapore and Malaysia, January 8 in Indonesia, the day after in Thailand and Australia, and January 31 in Vietnam. [14] Reception [ edit] Critical response [ edit] On review aggregator Rotten Tomatoes, the film holds an approval rating of 71% based on 7 reviews, with an average rating of 6/10. [15] Box office [ edit] On December 22 at 11 a. m. KST, “Ashfall” officially surpassed 2 million moviegoers, taking just four days to reach the milestone. Notably, the film had just reached 1 million moviegoers just the day before. [16] [17] [18] References [ edit] ^ "백두산". Naver (in Korean). Retrieved 22 November 2019. ^ Ji-yoon, Hwang (21 November 2019). "Lee Byung-hun, Ha Jung-woo Team up for Disaster Blockbuster". Chosun. ^ "A-list actors team up for $17 million movie 'Mount Paektu ' ". The Korea Times. ^ "Ashfall (2019)". Box Office Mojo. IMDb. Retrieved 28 January 2020. ^ "총 겨눈 이병헌vs하정우 '백두산' 폭발급 긴장감". 20 November 2019. ^ " ' Ashfall' brings new threat to Seoul: a volcano: Disaster movie asks what people will do to protect their loved ones". Korea Joongang Daily. Retrieved 25 November 2019. ^ " ' Ashfall' actors confident about film's eye-catching scale, storyline". Yonhap News. 19 November 2019. ^ Yoon, Min-sik (3 December 2019). "Dictator's assassination, volcanic eruptions at Paektusan coming to big screens soon". Korea Herald. Retrieved 22 December 2019. ^ "LEE Byung-hun and HA Jung-woo Wrap MOUNT BAEKDU". Koreanfilm. 8 August 2019. ^ "이병헌 하정우 마동석 전혜진 배수지 '백두산', 긴장감 넘치는 보도스틸 공개". Breaknews (in Korean). ^ " ' 백두산' 하정우 "배수지와 부부 연기, 나이차 크지만 용기 내 촬영" [엑's 현장]". (in Korean). ^ "수지, 홀터넥 드레스 소화 '여신 강림' (백두산)" (in Korean). ^ "[IS포토] 전혜진, 영화 백두산에서 냉철한 판단력을 가진 '민정수석'으로~". ^ Jean, Noh (18 December 2019). "CJ announces pre-sales and release dates for action drama 'Ashfall ' ". Screen Daily. ^ "ASHFALL".. Retrieved 27 January 2020. ^ " ' 백두산', 4일 만에 200만 관객 돌파…'극한직업'과 같은 속도". 22 December 2019. ^ "Korea Box Office: 'Ashfall' Volcano Disaster Movie Dominates Weekend".. 23 December 2019. Retrieved 26 December 2019. ^ External links [ edit] Wikimedia Commons has media related to Ashfall. Ashfall on IMDb Ashfall at HanCinema. Ashfall fossil bed ne. Endingnya bikin nangis. Correspondent Fion de Chao Resume Silly bass playing fion wanting paws and hugs ^^ Give me your cookies, EMS are standing by.

Ashfall trailer. Started off at a slow pace but that's because the background needed to be in place. Mid way thru, it was edge of the seat and Lee Byung Hun was just stellar. Still as charismatic as ever, his character made the movie interesting. Plot was exciting and even my teen daughters enjoyed the movie. Appeal to all ages. Must watch. "Ash cloud" redirects here. For general topic, see Ash. For other uses, see Ash (disambiguation). Volcanic ash deposits on a parked McDonnell-Douglas DC-10-30 during the 1991 eruption of Mount Pinatubo, causing the aircraft to rest on its tail. While falling ash behaves in a similar manner to snow, the sheer weight of deposits can cause serious damage to buildings and vehicles, as seen here, where the deposits were able to cause the 120 ton airliner's centre of gravity to shift. Volcanic ash consists of fragments of rock, minerals, and volcanic glass, created during volcanic eruptions and measuring less than 2 mm (0. 079 inches) in diameter. [1] The term volcanic ash is also often loosely used to refer to all explosive eruption products (correctly referred to as tephra), including particles larger than 2 mm. Volcanic ash is formed during explosive volcanic eruptions when dissolved gases in magma expand and escape violently into the atmosphere. The force of the gasses shatters the magma and propels it into the atmosphere where it solidifies into fragments of volcanic rock and glass. Ash is also produced when magma comes into contact with water during phreatomagmatic eruptions, causing the water to explosively flash to steam leading to shattering of magma. Once in the air, ash is transported by wind up to thousands of kilometres away. Due to its wide dispersal, ash can have a number of impacts on society, including human and animal health, disruption to aviation, disruption to critical infrastructure (e. g., electric power supply systems, telecommunications, water and waste-water networks, transportation), primary industries (e. g., agriculture), buildings and structures. Formation [ edit] Volcanic ash is formed during explosive volcanic eruptions, phreatomagmatic eruptions and during transport in pyroclastic density currents. Explosive eruptions occur when magma decompresses as it rises, allowing dissolved volatiles (dominantly water and carbon dioxide) to exsolve into gas bubbles. [2] As more bubbles nucleate a foam is produced, which decreases the density of the magma, accelerating it up the conduit. Fragmentation occurs when bubbles occupy ~70–80 vol% of the erupting mixture. [3] When fragmentation occurs, violently expanding bubbles tear the magma apart into fragments which are ejected into the atmosphere where they solidify into ash particles. Fragmentation is a very efficient process of ash formation and is capable of generating very fine ash even without the addition of water. [4] Volcanic ash is also produced during phreatomagmatic eruptions. During these eruptions fragmentation occurs when magma comes into contact with bodies of water (such as the sea, lakes and marshes) groundwater, snow or ice. As the magma, which is significantly hotter than the boiling point of water, comes into contact with water an insulating vapor film forms ( Leidenfrost effect). [5] Eventually this vapor film will collapse leading to direct coupling of the cold water and hot magma. This increases the heat transfer which leads to the rapid expansion of water and fragmentation of the magma into small particles which are subsequently ejected from the volcanic vent. Fragmentation causes an increase in contact area between magma and water creating a feedback mechanism, [5] leading to further fragmentation and production of fine ash particles. Pyroclastic density currents can also produce ash particles. These are typically produced by lava dome collapse or collapse of the eruption column. [6] Within pyroclastic density currents particle abrasion occurs as particles interact with each other resulting in a reduction in grain size and production of fine grained ash particles. In addition, ash can be produced during secondary fragmentation of pumice fragments, due to the conservation of heat within the flow. [7] These processes produce large quantities of very fine grained ash which is removed from pyroclastic density currents in co-ignimbrite ash plumes. Physical and chemical characteristics of volcanic ash are primarily controlled by the style of volcanic eruption. [8] Volcanoes display a range of eruption styles which are controlled by magma chemistry, crystal content, temperature and dissolved gases of the erupting magma and can be classified using the volcanic explosivity index (VEI). Effusive eruptions (VEI 1) of basaltic composition produce <10 5 m 3 of ejecta, whereas extremely explosive eruptions (VEI 5+) of rhyolitic and dacitic composition can inject large quantities (>10 9 m 3) of ejecta into the atmosphere. Another parameter controlling the amount of ash produced is the duration of the eruption: the longer the eruption is sustained, the more ash will be produced. For example, the second phase of the 2010 eruptions of Eyjafjallajökull was classified as VEI 4 despite a modest 8 km high eruption column, but the eruption continued for a month, which allowed a large volume of ash to be ejected into the atmosphere. Properties [ edit] Chemical [ edit] The types of minerals present in volcanic ash are dependent on the chemistry of the magma from which it erupted. Considering that the most abundant elements found in silicate magma are silicon and oxygen, the various types of magma (and therefore ash) produced during volcanic eruptions are most commonly explained in terms of their silica content. Low energy eruptions of basalt produce a characteristically dark coloured ash containing ~45–55% silica that is generally rich in iron (Fe) and magnesium (Mg). The most explosive rhyolite eruptions produce a felsic ash that is high in silica (>69%) while other types of ash with an intermediate composition (e. g., andesite or dacite) have a silica content between 55–69%. The principal gases released during volcanic activity are water, carbon dioxide, sulfur dioxide, hydrogen, hydrogen sulfide, carbon monoxide and hydrogen chloride. [9] These sulfur and halogen gases and metals are removed from the atmosphere by processes of chemical reaction, dry and wet deposition, and by adsorption onto the surface of volcanic ash. It has long been recognised that a range of sulfate and halide (primarily chloride and fluoride) compounds are readily mobilised from fresh volcanic ash. ; [10] [11] [12] It is considered most likely that these salts are formed as a consequence of rapid acid dissolution of ash particles within eruption plumes, which is thought to supply the cations involved in the deposition of sulfate and halide salts. While some 55 ionic species have been reported in fresh ash leachates, [9] the most abundant species usually found are the cations Na +, K +, Ca 2+ and Mg 2+ and the anions Cl −, F − and SO 4 2−. [9] [12] Molar ratios between ions present in leachates suggest that in many cases these elements are present as simple salts such as NaCl and CaSO 4. [9] [13] [14] [15] In a sequential leaching experiment on ash from the 1980 eruption of Mount St. Helens, chloride salts were found to be the most readily soluble, followed by sulfate salts [13] Fluoride compounds are in general only sparingly soluble (e. g., CaF 2, MgF 2), with the exception of fluoride salts of alkali metals and compounds such as calcium hexafluorosilicate (CaSiF 6). [16] The pH of fresh ash leachates is highly variable, depending on the presence of an acidic gas condensate (primarily as a consequence of the gases SO 2, HCl and HF in the eruption plume) on the ash surface. The crystalline-solid structure of the salts act more as an insulator than a conductor. [17] [18] [19] [20] However, once the salts are dissolved into a solution by a source of moisture (e. g., fog, mist, light rain, etc. ), the ash may become corrosive and electrically conductive. A recent study has shown that the electrical conductivity of volcanic ash increases with (1) increasing moisture content, (2) increasing soluble salt content, and (3) increasing compaction (bulk density). [20] The ability of volcanic ash to conduct electric current has significant implications for electric power supply systems. Physical [ edit] Components [ edit] Volcanic ash particles erupted during magmatic eruptions are made up of various fractions of vitric (glassy, non-crystalline), crystalline or lithic (non-magmatic) particles. Ash produced during low viscosity magmatic eruptions (e. g., Hawaiian and Strombolian basaltic eruptions) produce a range of different pyroclasts dependent on the eruptive process. For example, ash collected from Hawaiian lava fountains consists of sideromelane (light brown basaltic glass) pyroclasts which contain microlites (small quench crystals, not to be confused with the rare mineral microlite) and phenocrysts. Slightly more viscous eruptions of basalt (e. g., Strombolian) form a variety of pyroclasts from irregular sideromelane droplets to blocky tachylite (black to dark brown microcrystalline pyroclasts). In contrast, most high-silica ash (e. g. rhyolite) consists of pulverised products of pumice (vitric shards), individual phenocrysts (crystal fraction) and some lithic fragments ( xenoliths). [21] Ash generated during phreatic eruptions primarily consists of hydrothermally altered lithic and mineral fragments, commonly in a clay matrix. Particle surfaces are often coated with aggregates of zeolite crystals or clay and only relict textures remain to identify pyroclast types. [21] Morphology [ edit] Light microscope image of ash from the 1980 eruption of Mount St. Helens, Washington. The morphology (shape) of volcanic ash is controlled by a plethora of different eruption and kinematic processes. [21] [22] Eruptions of low-viscosity magmas (e. g., basalt) typically form droplet shaped particles. This droplet shape is, in part, controlled by surface tension, acceleration of the droplets after they leave the vent, and air friction. Shapes range from perfect spheres to a variety of twisted, elongate droplets with smooth, fluidal surfaces. [22] The morphology of ash from eruptions of high-viscosity magmas (e. g., rhyolite, dacite, and some andesites) is mostly dependent on the shape of vesicles in the rising magma before disintegration. Vesicles are formed by the expansion of magmatic gas before the magma has solidified. Ash particles can have varying degrees of vesicularity and vesicular particles can have extremely high surface area to volume ratios. [21] Concavities, troughs, and tubes observed on grain surfaces are the result of broken vesicle walls. [22] Vitric ash particles from high-viscosity magma eruptions are typically angular, vesicular pumiceous fragments or thin vesicle-wall fragments while lithic fragments in volcanic ash are typically equant, or angular to subrounded. Lithic morphology in ash is generally controlled by the mechanical properties of the wall rock broken up by spalling or explosive expansion of gases in the magma as it reaches the surface. The morphology of ash particles from phreatomagmatic eruptions is controlled by stresses within the chilled magma which result in fragmentation of the glass to form small blocky or pyramidal glass ash particles. [21] Vesicle shape and density play only a minor role in the determination of grain shape in phreatomagmatic eruptions. In this sort of eruption, the rising magma is quickly cooled on contact with ground or surface water. Stresses within the "quenched" magma cause fragmentation into five dominant pyroclast shape-types: (1) blocky and equant; (2) vesicular and irregular with smooth surfaces; (3) moss-like and convoluted; (4) spherical or drop-like; and (5) plate-like. Density [ edit] The density of individual particles varies with different eruptions. The density of volcanic ash varies between 700–1200 kg/m 3 for pumice, 2350–2450 kg/m 3 for glass shards, 2700–3300 kg/m 3 for crystals, and 2600–3200 kg/m 3 for lithic particles. [23] Since coarser and denser particles are deposited close to source, fine glass and pumice shards are relatively enriched in ash fall deposits at distal locations. [24] The high density and hardness (~5 on the Mohs Hardness Scale) together with a high degree of angularity, make some types of volcanic ash (particularly those with a high silica content) very abrasive. Grain size [ edit] Volcanic ash grain size distributions. Volcanic ash consists of particles (pyroclasts) with diameters <2 mm (particles >2 mm are classified as lapilli), [1] and can be as fine as 1 μm. [8] The overall grain size distribution of ash can vary greatly with different magma compositions. Few attempts have been made to correlate the grain size characteristics of a deposit with those of the event which produced it, though some predictions can be made. Rhyolitic magmas generally produce finer grained material compared to basaltic magmas, due to the higher viscosity and therefore explosivity. The proportions of fine ash are higher for silicic explosive eruptions, probably because vesicle size in the pre-eruptive magma is smaller than those in mafic magmas. [1] There is good evidence that pyroclastic flows produce high proportions of fine ash by communition and it is likely that this process also occurs inside volcanic conduits and would be most efficient when the magma fragmentation surface is well below the summit crater. [1] Dispersal [ edit] Ash plume rising from Mount Redoubt after an eruption on April 21, 1990. Ash particles are incorporated into eruption columns as they are ejected from the vent at high velocity. The initial momentum from the eruption propels the column upwards. As air is drawn into the column, the bulk density decreases and it starts to rise buoyantly into the atmosphere. [6] At a point where the bulk density of the column is the same as the surrounding atmosphere, the column will cease rising and start moving laterally. Lateral dispersion is controlled by prevailing winds and the ash may be deposited hundreds to thousands of kilometres from the volcano, depending on eruption column height, particle size of the ash and climatic conditions (especially wind direction and strength and humidity). [25] Ash fallout occurs immediately after the eruption and is controlled by particle density. Initially, coarse particles fall out close to source. This is followed by fallout of accretionary lapilli, which is the result of particle agglomeration within the column. [26] Ash fallout is less concentrated during the final stages as the column moves downwind. This results in an ash fall deposit which generally decreases in thickness and grain size exponentially with increasing distance from the volcano. [27] Fine ash particles may remain in the atmosphere for days to weeks and be dispersed by high-altitude winds. These particles can impact on the aviation industry (refer to impacts section) and, combined with gas particles, can affect global climate. Volcanic ash plumes can form above pyroclastic density currents, these are called co-ignimbrite plumes. As pyroclastic density currents travel away from the volcano, smaller particles are removed from the flow by elutriation and form a less dense zone overlying the main flow. This zone then entrains the surrounding air and a buoyant co-ignimbrite plume is formed. These plumes tend to have higher concentrations of fine ash particles compared to magmatic eruption plumes due to the abrasion within the pyroclastic density current. [1] Impacts [ edit] Introduction [ edit] Population growth has caused the progressive encroachment of urban development into higher risk areas, closer to volcanic centres, increasing the human exposure to volcanic ash fall events. Infrastructure is critical to supporting modern societies, particularly in urban areas, where high population densities create high demand for services. These infrastructure networks and systems support urban living, and provide lifeline services upon which we depend for our health, education, transport and social networking. Infrastructure networks and services support a variety of facilities across a broad range of sectors. [28] Volcanic ash fall events can disrupt and or damage the infrastructure upon which society depends. Several recent eruptions have illustrated the vulnerability of urban areas that received only a few millimetres or centimetres of volcanic ash. [29] [30] [31] [32] [33] [34] [35] This has been sufficient to cause disruption of transportation, electricity, water, sewage and storm water systems. Costs have been incurred from business disruption, replacement of damaged parts and insured losses. Ash fall impacts on critical infrastructure can also cause multiple knock-on effects, which may disrupt many different sectors and services. Volcanic ash fall is physically, socially, and economically disruptive. Volcanic ash can affect both proximal areas and areas many hundreds of kilometres from the source, and causes disruptions and losses in a wide variety of different infrastructure sectors. Impacts are dependent on: ash fall thickness; the duration of the ash fall; the grain size and chemistry of the ash; whether the ash is wet or dry; and any preparedness, management and prevention (mitigation) measures employed to reduce effects from the ash fall. Different sectors of infrastructure and society are affected in different ways and are vulnerable to a range of impacts or consequences. These are discussed in the following sections. Infrastructure sectors [ edit] Electricity [ edit] Electrical insulator flashover caused by volcanic ash contamination. Volcanic ash can cause disruption to electric power supply systems at all levels of power generation, transformation, transmission and distribution. There are four main impacts arising from ash-contamination of apparatus used in the power delivery process: [36] Wet deposits of ash on high voltage insulators can initiate a leakage current (small amount of current flow across the insulator surface) which, if sufficient current is achieved, can cause ‘flashover’ (the unintended electrical discharge around or over the surface of an insulating material). If the resulting short-circuit current is high enough to trip the circuit breaker then disruption of service will occur. Ash-induced flashover across transformer insulation (bushings) can burn, etch or crack the insulation irreparably and will likely result in the disruption of power supply. Volcanic ash can erode, pit and scour metallic apparatus, particularly moving parts such as water and wind turbines and cooling fans on transformers or thermal power plants. The high bulk density of some ash deposits can cause line breakage and damage to steel towers and wooden poles due to ash loading. This is most hazardous when the ash and/or the lines and structures are wet (e. g., by rainfall) and there has been ≥10 mm of ash fall. Fine-grained ash (e. g., <0. 5 mm diameter) adheres to lines and structures most readily. Volcanic ash may also load overhanging vegetation, causing it to fall onto lines. Snow and ice accumulation on lines and overhanging vegetation further increases the risk of breakage and or collapse of lines and other hardware. Controlled outages of vulnerable connection points (e. g., substations) or circuits until ash fall has subsided or for de-energised cleaning of equipment. Drinking water supplies [ edit] Following an eruption, it is very common for the public to hold fears about chemical contamination of water supplies. However, in general, the physical impacts of an ashfall will tend to overwhelm problems caused by the release of chemical contaminants from fresh volcanic ash. Impacts vary according to the type of treatment system. Large water treatment plants [ edit] Water turbine from the Agoyan Hydroelectric plant eroded by volcanic ash laden water. Groundwater-fed systems are resilient to impacts from ashfall, although airborne ash can interfere with the operation of well-head pumps. Electricity outages caused by ashfall can also disrupt electrically powered pumps if there is no backup generation. For surface water sources such as lakes and reservoirs, the volume available for dilution of ionic species leached from ash is generally large. The most abundant components of ash leachates (Ca, Na, Mg, K, Cl, F and SO 4) occur naturally at significant concentrations in most surface waters and therefore are not affected greatly by inputs from volcanic ashfall, and are also of low concern in drinking water, with the possible exception of fluorine. The elements iron, manganese and aluminium are commonly enriched over background levels by volcanic ashfall. These elements may impart a metallic taste to water, and may produce red, brown or black staining of whiteware, but are not considered a health risk. Volcanic ashfalls are not known to have caused problems in water supplies for toxic trace elements such as mercury (Hg) and lead (Pb) which occur at very low levels in ash leachates. A further point to note is that drinking-water treatment commonly involves the addition of treatment chemicals such as aluminium sulfate or ferric chloride as flocculants, lime for pH adjustment, chlorine for disinfection and fluoride compounds for dental health. The physical impacts of ashfall can affect the operation of water treatment plants. Ash can block intake structures, cause severe abrasion damage to pump impellers and overload pump motors. Many water treatment plants have an initial coagulation/flocculation step that is automatically adjusted to turbidity (the level of suspended solids, measured in nephelometric turbidity units) in the incoming water. In most cases, changes in turbidity caused by suspended ash particles will be within the normal operating range of the plant and can be managed satisfactorily by adjusting the addition of coagulant. Ashfalls will be more likely to cause problems for plants that are not designed for high levels of turbidity and which may omit coagulation/flocculation treatment. Ash can enter filtration systems such as open sand filters both by direct fallout and via intake waters. In most cases, increased maintenance will be required to manage the effects of an ashfall, but there will not be service interruptions. The final step of drinking water treatment is disinfection to ensure that final drinking water is free from infectious microorganisms. As suspended particles (turbidity) can provide a growth substrate for microorganisms and can protect them from disinfection treatment, it is extremely important that the water treatment process achieves a good level of removal of suspended particles. Small treatment systems [ edit] Many small communities obtain their drinking water from diverse sources (lakes, streams, springs and groundwater wells). Levels of treatment vary widely, from rudimentary systems with coarse screening or settling followed by disinfection (usually chlorination), to more sophisticated systems using a filtration step. Unless a high quality source is used, such as secure groundwater, disinfection alone is unlikely to guarantee that drinking water is safe from protozoa such as Giardia and Cryptosporidium, which are relatively resistant to standard disinfectants and which require additional removal steps such as filtration. Volcanic ashfall is likely to have major effects on these systems. Ash will clog intake structures, cause abrasion damage to pumps and block pipes, settling ponds and open filters. High levels of turbidity are very likely to interfere with disinfection treatment and doses may have to be adjusted to compensate. It is essential to monitor chlorine residuals in the distribution system. Rainwater-fed supplies [ edit] Many households, and some small communities, rely on rainwater for their drinking water supplies. Roof-fed systems are highly vulnerable to contamination by ashfall, as they have a large surface area relative to the storage tank volume. In these cases, leaching of chemical contaminants from the ashfall can become a health risk and drinking of water is not recommended. Prior to an ashfall, downpipes should be disconnected so that water in the tank is protected. A further problem is that the surface coating of fresh volcanic ash can be acidic. Unlike most surface waters, rainwater generally has a very low alkalinity (acid-neutralising capacity) and thus ashfall may acidify tank waters. This may lead to problems with plumbosolvency, whereby the water is more aggressive towards materials that it comes into contact with. This can be a particular problem if there are lead-head nails or lead flashing used on the roof, and for copper pipes and other metallic plumbing fittings. Water demand [ edit] During ashfall events, large demands are commonly placed on water resources for cleanup and shortages can result. Shortages compromise key services such as firefighting and can lead to a lack of water for hygiene, sanitation and drinking. Municipal authorities need to monitor and manage this water demand carefully, and may need to advise the public to utilise cleanup methods that do not use water (e. g., cleaning with brooms rather than hoses). Wastewater treatment [ edit] Wastewater networks may sustain damage similar to water supply networks. It is very difficult to exclude ash from the sewerage system. Systems with combined storm water/sewer lines are most at risk. Ash will enter sewer lines where there is inflow/infiltration by stormwater through illegal connections (e. g., from roof downpipes), cross connections, around manhole covers or through holes and cracks in sewer pipes. Ash-laden sewage entering a treatment plant is likely to cause failure of mechanical prescreening equipment such as step screens or rotating screens. Ash that penetrates further into the system will settle and reduce the capacity of biological reactors as well as increasing the volume of sludge and changing its composition. Aircraft [ edit] The principal damage sustained by aircraft flying into a volcanic ash cloud is abrasion to forward-facing surfaces, such as the windshield and leading edges of the wings, and accumulation of ash into surface openings, including engines. Abrasion of windshields and landing lights will reduce visibility forcing pilots to rely on their instruments. However, some instruments may provide incorrect readings as sensors (e. g., pitot tubes) can become blocked with ash. Ingestion of ash into engines causes abrasion damage to compressor fan blades. The ash erodes sharp blades in the compressor, reducing its efficiency. The ash melts in the combustion chamber to form molten glass. The ash then solidifies on turbine blades, blocking air flow and causing the engine to stall. The composition of most ash is such that its melting temperature is within the operating temperature (>1000 °C) of modern large jet engines. [37] The degree of impact depends upon the concentration of ash in the plume, the length of time the aircraft spends within the plume and the actions taken by the pilots. Critically, melting of ash, particularly volcanic glass, can result in accumulation of resolidified ash on turbine nozzle guide vanes, resulting in compressor stall and complete loss of engine thrust. [38] The standard procedure of the engine control system when it detects a possible stall is to increase power which would exacerbate the problem. It is recommended that pilots reduce engine power and quickly exit the cloud by performing a descending 180° turn. [38] Volcanic gases, which are present within ash clouds, can also cause damage to engines and acrylic windshields, although this damage may not surface for many years. Occurrence [ edit] There are many instances of damage to jet aircraft as a result of an ash encounter. On 24 June 1982, a British Airways Boeing 747-236B ( Flight 9) flew through the ash cloud from the eruption of Mount Galunggung, Indonesia resulting in the failure of all four engines. The plane descended 24, 000 feet (7, 300 m) in 16 minutes before the engines restarted, allowing the aircraft to make an emergency landing. On 15 December 1989, a KLM Boeing 747-400 ( Flight 867) also lost power to all four engines after flying into an ash cloud from Mount Redoubt, Alaska. After dropping 14, 700 feet (4, 500 m) in four minutes, the engines were started just 1–2 minutes before impact. Total damage was US$80 million and it took 3 months' work to repair the plane. [37] In the 1990s, a further US$100 million of damage was sustained by commercial aircraft (some in the air, others on the ground) as a consequence of the 1991 eruption of Mount Pinatubo in the Philippines. [37] In April 2010, airspace all over Europe was affected, with many flights cancelled -which was unprecedented-due to the presence of volcanic ash in the upper atmosphere from the eruption of the Icelandic volcano Eyjafjallajökull. [39] On 15 April 2010, the Finnish Air Force halted training flights when damage was found from volcanic dust ingestion by the engines of one of its Boeing F-18 Hornet fighters. [40] On 22 April 2010, UK RAF Typhoon training flights were also temporarily suspended after deposits of volcanic ash were found in a jet's engines. [41] In June 2011, there were similar closures of airspace in Chile, Argentina, Brazil, Australia and New Zealand, following the eruption of Puyehue-Cordón Caulle, Chile. Detection [ edit] Coverage of the nine VAAC around the world The AVOID instrument mounted on the fuselage of an AIRBUS A340 test aircraft. Volcanic ash clouds are very difficult to detect from aircraft as no onboard cockpit instruments exist to detect them. However, a new system called Airborne Volcanic Object Infrared Detector (AVOID) has recently been developed by Dr Fred Prata [42] while working at CSIRO Australia [43] and the Norwegian Institute for Air Research, which will allow pilots to detect ash plumes up to 60 km (37 mi) ahead and fly safely around them. [44] The system uses two fast-sampling infrared cameras, mounted on a forward-facing surface, that are tuned to detect volcanic ash. This system can detect ash concentrations of <1 mg/m 3 to > 50 mg/m 3, giving pilots approximately 7–10 minutes warning. [44] The camera was tested [45] [46] by the easyJet airline company, [47] AIRBUS and Nicarnica Aviation (co-founded by Dr Fred Prata). The results showed the system could work to distances of ~60 km and up to 10, 000 ft [48] but not any higher without some significant modifications. In addition, ground and satellite based imagery, radar, and lidar can be used to detect ash clouds. This information is passed between meteorological agencies, volcanic observatories and airline companies through Volcanic Ash Advisory Centers (VAAC). There is one VAAC for each of the nine regions of the world. VAACs can issue advisories describing the current and future extent of the ash cloud. Airport systems [ edit] Volcanic ash not only affects in-flight operations but can affect ground-based airport operations as well. Small accumulations of ash can reduce visibility, create slippery runways and taxiways, infiltrate communication and electrical systems, interrupt ground services, damage buildings and parked aircraft. [49] Ash accumulation of more than a few millimeters requires removal before airports can resume full operations. Ash does not disappear (unlike snowfalls) and must be disposed of in a manner that prevents it from being remobilised by wind and aircraft. Land transport [ edit] Ash may disrupt transportation systems over large areas for hours to days, including roads and vehicles, railways and ports and shipping. Falling ash will reduce the visibility which can make driving difficult and dangerous. [23] In addition, fast travelling cars will stir up ash, creating billowing clouds which perpetuate ongoing visibility hazards. Ash accumulations will decrease traction, especially when wet, and cover road markings. [23] Fine-grained ash can infiltrate openings in cars and abrade most surfaces, especially between moving parts. Air and oil filters will become blocked requiring frequent replacement. Rail transport is less vulnerable, with disruptions mainly caused by reduction in visibility. [23] Marine transport can also be impacted by volcanic ash. Ash fall will block air and oil filters and abrade any moving parts if ingested into engines. Navigation will be impacted by a reduction in visibility during ash fall. Vesiculated ash ( pumice and scoria) will float on the water surface in ‘pumice rafts’ which can clog water intakes quickly, leading to over heating of machinery. [23] Communications [ edit] Telecommunication and broadcast networks can be affected by volcanic ash in the following ways: attenuation and reduction of signal strength; damage to equipment; and overloading of network through user demand. Signal attenuation due to volcanic ash is not well documented; however, there have been reports of disrupted communications following the 1969 Surtsey eruption and 1991 Mount Pinatubo eruption. Research by the New Zealand -based Auckland Engineering Lifelines Group determined theoretically that impacts on telecommunications signals from ash would be limited to low frequency services such as satellite communication. [34] Signal interference may also be caused by lightning, as this is frequently generated within volcanic eruption plumes. [50] Telecommunication equipment may become damaged due to direct ash fall. Most modern equipment requires constant cooling from air conditioning units. These are susceptible to blockage by ash which reduces their cooling efficiency. [51] Heavy ash falls may cause telecommunication lines, masts, cables, aerials, antennae dishes and towers to collapse due to ash loading. Moist ash may also cause accelerated corrosion of metal components. [34] Reports from recent eruptions suggest that the largest disruption to communication networks is overloading due to high user demand. [23] This is common of many natural disasters. Computers [ edit] Computers may be impacted by volcanic ash, with their functionality and usability decreasing during ashfall, but it is unlikely they will completely fail. [52] The most vulnerable components are the mechanical components, such as cooling fans, cd drives, keyboard, mice and touch pads. These components can become jammed with fine grained ash causing them to cease working; however, most can be restored to working order by cleaning with compressed air. Moist ash may cause electrical short circuits within desktop computers; however, will not affect laptop computers. [52] Buildings and structures [ edit] Damage to buildings and structures can range from complete or partial roof collapse to less catastrophic damage of exterior and internal materials. Impacts depend on the thickness of ash, whether it is wet or dry, the roof and building design and how much ash gets inside a building. The specific weight of ash can vary significantly and rain can increase this by 50–100%. [8] Problems associated with ash loading are similar to that of snow; however, ash is more severe as 1) the load from ash is generally much greater, 2) ash does not melt and 3) ash can clog and damage gutters, especially after rain fall. Impacts for ash loading depend on building design and construction, including roof slope, construction materials, roof span and support system, and age and maintenance of the building. [8] Generally flat roofs are more susceptible to damage and collapse than steeply pitched roofs. Roofs made of smooth materials (sheet metal or glass) are more likely to shed ash than roofs made with rough materials (thatch, asphalt or wood shingles). Roof collapse can lead to widespread injuries and deaths and property damage. For example, the collapse of roofs from ash during the 15 June 1991 Mount Pinatubo eruption killed about 300 people. [53] Human and animal health [ edit] Ash particles of less than 10 µm diameter suspended in the air are known to be inhalable, and people exposed to ash falls have experienced respiratory discomfort, breathing difficulty, eye and skin irritation, and nose and throat symptoms. [54] Most of these effects are short-term and are not considered to pose a significant health risk to those without pre-existing respiratory conditions. [55] The health effects of volcanic ash depend on the grain size, mineralogical composition and chemical coatings on the surface of the ash particles. [55] Additional factors related to potential respiratory symptoms are the frequency and duration of exposure, the concentration of ash in the air and the respirable ash fraction; the proportion of ash with less than 10 µm diameter, known as PM 10. The social context may also be important. Chronic health effects from volcanic ash fall are possible, as exposure to free crystalline silica is known to cause silicosis. Minerals associated with this include quartz, cristobalite and tridymite, which may all be present in volcanic ash. These minerals are described as ‘free’ silica as the SiO 2 is not attached to another element to create a new mineral. However, magmas containing less than 58% SiO 2 are thought to be unlikely to contain crystalline silica. [55] The exposure levels to free crystalline silica in the ash are commonly used to characterise the risk of silicosis in occupational studies (for people who work in mining, construction and other industries, ) because it is classified as a human carcinogen by the International Agency for Research on Cancer. Guideline values have been created for exposure, but with unclear rationale; UK guidelines for particulates in air (PM10) are 50 µg/m 3 and USA guidelines for exposure to crystalline silica are 50 µg/m 3. [55] It is thought that the guidelines on exposure levels could be exceeded for short periods of time without significant health effects on the general population. [54] There have been no documented cases of silicosis developed from exposure to volcanic ash. However, long-term studies necessary to evaluate these effects are lacking. [55] Ingesting ash [ edit] Ingesting ash may be harmful to livestock, causing abrasion of the teeth, and in cases of high fluorine content, fluorine poisoning (toxic at levels of >100 µg/g) for grazing animals. [56] It is known from the 1783 eruption of Laki in Iceland that fluorine poisoning occurred in humans and livestock as a result of the chemistry of the ash and gas, which contained high levels of Hydrogen Fluoride. Following the 1995/96 Mount Ruapehu eruptions in New Zealand, two thousand ewes and lambs died after being affected by fluorosis while grazing on land with only 1–3 mm of ash fall. [56] Symptoms of flourorsis among cattle exposed to ash Brown-yellow to green-black mottles in the teeth, and hypersensibility to pressure in the legs and back. [57] Ash ingestion may also cause gastrointestinal blockages. [34] Sheep that ingested ash from the 1991 Mount Hudson volcanic eruption in Chile, suffered from diarrhoea and weakness. Other effects on livestock [ edit] Ash accumulating in the back wool of sheep may add significant weight, leading to fatigue and sheep that can not stand up. Rainfall may result in a significant burden as it adds weight to ash. [58] Pieces of wool may fall away and any remaining wool on sheep may be worthless as poor nutrition associated to volcanic eruptions impacts on que quality of the fibre. [58] As the usual pastures and plants become covered in volcanic ash during eruption some livestock may resort to eat whatever is available including toxic plants. [59] There are reports of goats and sheep in Chile and Argentina having natural aborts in connection to volcanic eruptions. [60] Environment and agriculture [ edit] Volcanic ash can have a detrimental impact on the environment which can be difficult to predict due to the large variety of environmental conditions that exist within the ash fall zone. Natural waterways can be impacted in the same way as urban water supply networks. Ash will increase water turbidity which can reduce the amount of light reaching lower depths, which can inhibit growth of submerged aquatic plants and consequently affect species which are dependent on them such as fish and shellfish. High turbidity can also affect the ability of fish gills to absorb dissolved oxygen. Acidification will also occur, which will reduce the pH of the water and impact the fauna and flora living in the environment. Fluoride contamination will occur if the ash contains high concentrations of fluoride. Ash accumulation will also affect pasture, plants and trees which are part of the horticulture and agriculture industries. Thin ash falls (<20 mm) may put livestock off eating, and can inhibit transpiration and photosynthesis and alter growth. There may be an increase in pasture production due to a mulching effect and slight fertilizing effect, such as occurred following the 1980 Mount St. Helens and 1995/96 Mt Ruapehu eruptions. [61] [62] Heavier falls will completely bury pastures and soil leading to death of pasture and sterilization of the soil due to oxygen deprivation. Plant survival is dependent on ash thickness, ash chemistry, compaction of ash, amount of rainfall, duration of burial and the length of plant stalks at the time of ash fall. [8] The acidic nature of ash will lead to elevated soil sulfur levels and lowered soil pH, which can reduce the availability of essential minerals and alter the soil's characteristics so that crops and plants will not survive. Ash will also impact upon arable crops, such as fruit, vegetables and grain. Ash can burn plant and crop tissue reducing quality, contaminate crops during harvest and damage plants from ash loading. Young forests (trees <2 years old) are most at risk from ash falls and are likely to be destroyed by ash deposits >100 mm. [63] Ash fall is unlikely to kill mature trees, but ash loading may break large branches during heavy ash falls (>500 mm). Defoliation of trees may also occur, especially if there is a coarse ash component within the ash fall. [8] Land rehabilitation after ash fall may be possible depending on the ash deposit thickness. Rehabilitation treatment may include: direct seeding of deposit; mixing of deposit with buried soil; scraping of ash deposit from land surface; and application of new topsoil over the ash deposit. [34] Interdependence [ edit] Interdependency of volcanic ashfall impacts from the Eyjafjallajökull 2010 eruptions. Critical infrastructure and infrastructure services are vital to the functionality of modern society, to provide: medical care, policing, emergency services, and lifelines such as water, wastewater, and power and transportation links. Often critical facilities themselves are dependent on such lifelines for operability, which makes them vulnerable to both direct impacts from a hazard event and indirect effects from lifeline disruption. [64] The impacts on lifelines may also be inter-dependent. The vulnerability of each lifeline may depend on: the type of hazard, the spatial density of its critical linkages, the dependency on critical linkages, susceptibility to damage and speed of service restoration, state of repair or age, and institutional characteristics or ownership. [28] The 2010 eruption of Eyjafjallajokull in Iceland highlighted the impacts of volcanic ash fall in modern society and our dependence on the functionality of infrastructure services. During this event, the airline industry suffered business interruption losses of €1. 5–2. 5 billion from the closure of European airspace for six days in April 2010 and subsequent closures into May 2010. [65] Ash fall from this event is also known to have caused local crop losses in agricultural industries, losses in the tourism industry, destruction of roads and bridges in Iceland (in combination with glacial melt water), and costs associated with emergency response and clean-up. However, across Europe there were further losses associated with travel disruption, the insurance industry, the postal service, and imports and exports across Europe and worldwide. These consequences demonstrate the interdependency and diversity of impacts from a single event. [35] Preparedness, mitigation and management [ edit] Preparedness for ashfalls should involve sealing buildings, protecting infrastructure and homes, and storing sufficient supplies of food and water to last until the ash fall is over and clean-up can begin. Dust masks can be worn to reduce inhalation of ash and mitigate against any respiratory health affects. [54] Goggles can be worn to protect against eye irritation. The International Volcanic Ashfall Impacts Working Group of IAVCEI maintains a regularly updated database of impacts and mitigations strategies. At home, staying informed about volcanic activity, and having contingency plans in place for alternative shelter locations, constitutes good preparedness for an ash fall event. This can prevent some impacts associated with ash fall, reduce the effects, and increase the human capacity to cope with such events. A few items such as a flashlight, plastic sheeting to protect electronic equipment from ash ingress, and battery operated radios, are extremely useful during ash fall events. [8] The protection of infrastructure must also be considered within emergency preparedness. Critical facilities that need to remain operable should be identified, and all others should be shut down to reduce damage. It is also important to keep ash out of buildings, machinery and lifeline networks (in particular water and wastewater systems, ) to prevent some of the damage caused by ash particles. Windows and doors should be closed and shuttered if possible, to prevent ingress of ash into buildings. Communication plans should be made beforehand to inform of mitigation actions being undertaken. Spare parts and back-up systems should be in place prior to ash fall events to reduce service disruption and return functionality as quickly as possible. Good preparedness also includes the identification of ash disposal sites, before ash fall occurs, to avoid further movement of ash and to aid clean-up. [66] Protective equipment such as eye protection and dust masks should be deployed for clean-up teams in advance of ash fall events. Some effective techniques for the management of ash have been developed including cleaning methods and cleaning apparatus, and actions to mitigate or limit damage. The latter include covering of openings such as: air and water intakes, aircraft engines and windows during ash fall events. Roads may be closed to allow clean-up of ash falls, or speed restrictions may be put in place, in order to prevent motorists from developing motor problems and becoming stranded following an ash fall. [67] To prevent further effects on underground water systems or waste water networks, drains and culverts should be unblocked and ash prevented from entering the system. [66] Ash can be moistened (but not saturated) by sprinkling with water, to prevent remobilisation of ash and to aid clean-up. [67] Prioritisation of clean-up operations for critical facilities and coordination of clean-up efforts also constitute good management practice. [66] [67] [68] It is recommended to evacuate livestock in areas where ashfall may reach 5 cm or more. [69] Volcanic ash soils [ edit] Volcanic ash's primary use is that of a soil enricher. Once the minerals in ash are washed into the soil by rain or other natural processes, it mixes with the soil to create an andisol layer. This layer is highly rich in nutrients and is very good for agricultural use; the presence of lush forests on volcanic islands is often as a result of trees growing and flourishing in the phosphorus and nitrogen -rich andisol. [70] Volcanic ash can also be used as a replacement for sand. 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Bibcode: 2015JVGR.. 304.. 359H. 2015. 09. 014. hdl: 10092/11705. ^ Hayes, Josh; Wilson, Thomas M. ; Deligne, Natalia I. ; Cole, Jim; Hughes, Matthew (2017-01-06). "A model to assess tephra clean-up requirements in urban environments". Journal of Applied Volcanology. 6 (1). 1186/s13617-016-0052-3. ISSN   2191-5040. ^ Araya Valenzuela 2015, p. 80. ^ Williams, Matt (2016-03-19). "What Are The Benefits Of Volcanoes? ". Universe Today. Retrieved 2018-12-17. ^ Solanki, Seetal (2018-12-17). "5 radical material innovations that will shape tomorrow". CNN Style. Retrieved 2018-12-17. Bibliography Araya Valenzuela, Oscar (2015). Erupciones volcánicas: Efectos sobre la ganadería. Collección Austral Universitaria de Ciencias Silvoagropecuarias (in Spanish). Ediciones UACh. ISBN   978-956-9412-20-2. External links [ edit].

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