April 29, 2014, 10:02 a.m. The Snohomish County Medical Examiner’s Office identified all 42 bodies recovered from the site of the March 22 landslide near Oso, Wash. In connection to the landslide, the county listed one person as still missing.
- 1 How many people were recovered from the Oso landslide?
- 2 How far did the killer landslide that hit Washington go from the top of the mountain to the outer edge of debris?
- 3 Who survived the Oso mudslide?
- 4 How many structures were destroyed in the Oso landslide?
- 5 How fast did the Oso landslide travel?
- 6 Could the disaster at Oso Washington have been prevented?
- 7 Could the Oso landslide have been predicted?
- 8 How could the Oso mudslide been avoided?
- 9 What happened during the Oso landslide?
- 10 How far did the Oso landslide travel?
- 11 What was the worst mudslide?
- 12 What was the explanation for why the Oso landslide traveled so far?
- 13 How much damage did the Oso landslide cost?
- 14 What type of deposits were mobilized during the Oso landslide?
- 15 What fraction of the world’s landslide related deaths occur in the Himalayas?
- 16 How fast is a debris flow?
- 17 What is the deadliest landslide in US history?
- 18 How deep was the mud that resulted from the slide in Afghanistan?
- 19 What was the deadliest landslide in recorded US history?
- 20 What is the biggest landslide ever?
- 21 Which of the following was the cause of the debris flow in Oso Washington in March 2014 quizlet?
- 22 How long do landslides last for?
- 23 How do you survive a landslide?
- 24 How many deaths in the US are caused by landslides each year?
- 25 Can mudflows carry large boulders?
- 26 What causes a slump?
- 27 What was the most costly mass movement in the US?
- 28 Where was the most recent landslide 2021?
- 29 How many died in the Oso landslide?
- 30 Why do mudflows happen?
- 31 When was the last landslide in the US?
- 32 What are 3 major historical landslides?
- 33 Is Lahar a lava?
- 34 What caused the bulge on Mt St Helens?
- 35 Did Mt St Helens cause mudslides?
- 36 How many landslides occurred within a 7 month period?
- 37 What is the name of a raw slope left behind after a landslide?
- 38 What is the furthest edge of the landslide called?
How many people were recovered from the Oso landslide?
According to the Snohomish County Sheriff’s Office, eight people were rescued within the first two hours after the landslide. As she looks back on that day, Robin Youngblood knows she is one of the lucky ones.
How far did the killer landslide that hit Washington go from the top of the mountain to the outer edge of debris?
10:36 a.m. A major landslide occurred 4 miles (6.4 km) east of Oso, Washington, United States, on March 22, 2014, at 10:37 a.m. local time.
Who survived the Oso mudslide?
Lutheran Community Services Northwest is there over the long haul. This is Tim Ward’s story of healing. He is one of nine people who survived the massive mudslide near Oso, WA on the morning of March 22, 2014.
How many structures were destroyed in the Oso landslide?
Landslide debris blocked the North Fork Stillaguamish River, destroyed about 40 homes and other structures, and buried nearly a mile of State Route 530.
How fast did the Oso landslide travel?
USGS research indicates that the landslide’s average speed was about 40 miles per hour, with maximum speeds likely even higher. The area overrun by the landslide was about one half square mile, and the landslide moved about 18 million tons of sand, till, and clay.
Could the disaster at Oso Washington have been prevented?
Landslide-risk mapping alone could not have prevented the Oso tragedy. Only direct actions such as investing in hillside stabilization or keeping individuals out of harm’s path could have done that.
Could the Oso landslide have been predicted?
Scientists predicted the Oso landslide, but nothing was done. Over the years, they spoke out again and again, without effect on development in the area.
How could the Oso mudslide been avoided?
Yes, the slope could probably be stabilized, by some combination of subsurface drainage, diversion structures and slope reconstruction. In such a location, local government can and should prohibit new development, unless the slope is made to be safe.
What happened during the Oso landslide?
On March 22, 2014, a deadly mudslide devastated the Washington state community of Oso — 60 miles north of Seattle — with up to 70 feet of mud, swallowing part of the Stillaguamish River and a mile-long stretch of state highway 530. Eyewitnesses say a towering wall of mud roared loudly as it raced through the valley.
How far did the Oso landslide travel?
The landslide killed 43 people as it plowed through the Steelhead Haven neighborhood. When it stopped, after crossing the river, the neighborhood, and State Route 530, the Oso landslide had traveled 1.4 kilometers. That’s a remarkable distance, says Brian Collins of the USGS, given the geologic and geographic context.
What was the worst mudslide?
Rank | Mudslide Name | Location |
---|---|---|
1 | 1999 Vargas Tragedy | Vargas, Venezuela |
2 | 1985 Armero Tragedy | Tolima, Colombia |
3 | 2013 India Monsoons | Uttarakhand, India |
4 | 2010 Gansu Mudslide | Zhouqu County, China |
What was the explanation for why the Oso landslide traveled so far?
Richard Iverson, a hydrologist at the USGS’s office in Vancouver and one of the world’s leading landslide experts, told the Seattle Times that the slide was caused by “a combination of unusually wet weather, erosion at the toe of the slide and local geology.”
How much damage did the Oso landslide cost?
Preliminary assessments of the financial impact of the Oso landslide estimate that the cost of rebuilding Highway 530 will exceed $38 million, while the total cost of emergency operations following the slide reached approximately $67 million by June 2015.
What type of deposits were mobilized during the Oso landslide?
On March 22, 2014, the State Route 530 Landslide near Oso, Washington mobilized 8 million cubic meters of unconsolidated Pleistocene material, creating a valley‑spanning deposit that fully impounded the North Fork Stillaguamish River.
According to the National Crime Records Bureau data, 65% of 2019’s landslide fatalities happened in either the Himalayas or the Western Ghats. More than 400,000 sq. km., or around 13%, of India’s land, is prone to landslides (excluding snow-covered areas).
How fast is a debris flow?
Debris flows can travel at speeds up to and exceeding 35 mph and can carry large items such as boulders, trees, and cars. If a debris flows enters a steep stream channel, they can travel for several miles, impacting areas unaware of the hazard.
What is the deadliest landslide in US history?
On March 22, 2014, a landslide claimed the lives of 43 people and destroyed 49 homes near Oso, Washington. It was the deadliest landslide in U.S. history.
How deep was the mud that resulted from the slide in Afghanistan?
The consecutive slides “levelled” the village, and left the area under 10 to 30 metres (33 to 98 ft) of mud.
What was the deadliest landslide in recorded US history?
The worst landslide in U.S. history was in 1928, when as many as 500 people were killed after the collapse of the St. Francis Dam near Los Angeles, according to geologist Lynn Highland of the U.S.Geological Survey.
What is the biggest landslide ever?
The largest subaerial (on land) landslide in Earth’s recorded history was connected with the 1980 eruption of Mount St. Helens volcano in Washington state, USA.
Which of the following was the cause of the debris flow in Oso Washington in March 2014 quizlet?
Which of the following was the cause of the debris flow in Oso, Washington, in March 2014? A stream at the base of a slope eroded the toe of the slope away. A ________ is not the sole cause of a mass wasting event, but the last of many causes that initiate the downslope movement of materials.
How long do landslides last for?
Just a little further clarification, in general, do larger, more powerful (and deadly) landslides typically take longer to happen (ex: 100 sec, as you cited), while smaller ones take less time (like 10’s of seconds, as you observed)? Or were the ones you observed large and deadly, too (like Frank Slide)?
How do you survive a landslide?
- Move away from the threat—don’t approach an active landslide.
- Escape vertically by moving upstairs or even on countertops to avoid being swept away.
- Identify and relocate to interior, ideally unfurnished, areas of a building that offer more protection.
- Open downhill doors and windows to let debris escape.
How many deaths in the US are caused by landslides each year?
In the United States, landslides and debris flows result in 25 to 50 deaths each year.
Can mudflows carry large boulders?
They usually start on steep hillsides as shallow landslides that liquefy and accelerate to speeds that are typically about 10 mph, but can exceed 35 mph. The consistency of debris flows ranges from watery mud to thick, rocky mud that can carry large items such as boulders, trees, and cars.
What causes a slump?
slump, in geology, downward intermittent movement of rock debris, usually the consequence of removal of buttressing earth at the foot of a slope of unconsolidated material. It commonly involves a shear plane on which a back-tilting of the top of the slumped mass occurs.
What was the most costly mass movement in the US?
Landslides are among the most destructive forces in nature. The damage from the Bingham Canyon rockslide is estimated at nearly $1 billion, potentially making it the most expensive landslide in U.S. history.
Where was the most recent landslide 2021?
The 2021 Mumbai landslide was a series of landslides that occurred in Chembur and Vikhroli, the suburban neighbourhood located in Mumbai, India on July 18, 2021.
How many died in the Oso landslide?
Why do mudflows happen?
Mudflows can be caused by unusually heavy rains or a sudden thaw. They consist mainly of mud and water plus fragments of rock and other debris, so they often behave like floods. They can move houses off their foundations or bury a place within minutes because of incredibly strong currents.
When was the last landslide in the US?
How does this slide compare to other such events in U.S. history? The largest landslide in modern U.S. history (in terms of volume) was most likely one that occurred just last year in Bingham Canyon outside of Salt Lake City, Utah on April 10, 2013.
What are 3 major historical landslides?
- Huaraz Debris Flows, Ancash, Peru, December 1941 (5,000 deaths)
- 62 Nevado Huascaran Debris Fall, Ranrahirca, Peru, January 1962 (4,500 deaths) …
- Khait Landslide, Tajikstan, July 1949 (4,000 deaths)) …
- Diexi Slides, Sichuan, China, August 1933 (3,000+ deaths) …
Is Lahar a lava?
A lahar is a hot or cold mixture of water and rock fragments that flow quickly down the slopes of a volcano. They move up to 40 miles per hour through valleys and stream channels, extending more than 50 miles from the volcano. Lahars can be extremely destructive and are more deadly than lava flows.
What caused the bulge on Mt St Helens?
The bulge was caused by an intrusion of magma below the surface, and authorities began evacuating hundreds of people from the sparsely settled area near the mountain. A few people refused to leave. On the morning of May 18, Mount St.
Did Mt St Helens cause mudslides?
The eruption caused snow, ice, and even glaciers to melt, creating volcanic mudslides that reached the Columbia River, which is located almost 80 km away. During the eruption, the mountain released around 26 megatons of TNT.
How many landslides occurred within a 7 month period?
Around the world, landslides occur anywhere there’s elevated terrain, killing thousands of people every year. In just 7 months, 222 landslides worldwide caused loss of life, resulting in nearly 1,500 deaths.
What is the name of a raw slope left behind after a landslide?
Raw slope left behind after a landslide is called what? Scarp.
What is the furthest edge of the landslide called?
Surface of separation: The part of the original ground surface overlain by the foot of the landslide. Tip: The point of the toe farthest from the top of the landslide. Toe: The lower, usually curved margin of the displaced material of a landslide, it is the most distant from the main scarp.