What was the deadliest mudslide?
- 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)
Where was the most recent landslide 2022?
From January 31 to February 1, 2022, heavy rainfall impacted Ecuador, which caused multiple landslides, floods, and mudflows. It was caused by the country's biggest rainfall in nearly 20 years, which fell on the capital.
What was the worst landslide ever?
The largest landslide formed a 255-metre-high (837 ft) landslide dam on the Min River. This landslide killed all but one of the 577 people in the town of Deixi. The dam then overtopped, causing a flood and 2,500 deaths.
Where did the most deadliest landslide occur?
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. OSO, Wash.
What is the strongest landslide in the world?
Helens massive Eruption: The largest landslide ever recorded. In 1980, the explosion of Mount St. Helens in the state of Washington, United States, triggered the largest (on land) landslide ever recorded.
How fast was the fastest landslide?
Mudslides like this one are the fastest-moving type of landslide, or "mass wasting." Mudslides can move at speeds of 80 kilometers (50 miles) per hour.
When was the last landslide?
The 2022 presidential election was the first landslide since 1987.
How many people are killed by landslides?
25-50 people are killed in landslides in the United States every year. More than 18,000 people have died due to landslides worldwide since 1998.
Where was the first landslide in the world?
On September 2, 1806, the Swiss village of Goldau was destroyed by a landslide that had an estimated volume of 40 million cubic meters, coming from the Rossberg.
How many people were killed in the Hope Slide?
four peopleThe Hope Slide was a landslide that occurred in the morning hours of January 9, 1965 in the Nicolum Valley (49°17′56″N 121°15′49″W ) in the Cascade Mountains near Hope, British Columbia and killed four people. The volume of rock involved in the landslide has been estimated at 47 million cubic metres.
What are the 3 landslides?
Landslides can occur as flows, slides, or rockfalls and topples. A major difference between the three types is the amount of water—flows have the most and rockfalls usually have the least. Flows are generally a slurry mixture of water, soil, rock and (or) debris that moves rapidly downslope.
How rare is a landslide?
Landslides are a serious geologic hazard common to almost every State in the United States. It is estimated that in the United States, they cause in excess of $1 billion in damages and from about 25 to 50 deaths each year.
Can you survive a landslide?
If you can see a landslide moving towards you, chances are you probably can't outrun it. Stay inside, and move upstairs or onto higher ground. Then, hunker down underneath some sturdy furniture and wait it out. Getting to a higher spot can help you stay out of the path of the landslide.
How many people died in the Hope Slide?
four peopleThe Hope Slide was a landslide that occurred in the morning hours of January 9, 1965 in the Nicolum Valley (49°17′56″N 121°15′49″W ) in the Cascade Mountains near Hope, British Columbia and killed four people. The volume of rock involved in the landslide has been estimated at 47 million cubic metres.
What was the first landslide?
The Swiss physician Dr. Carl Zay, who witnessed the landslide of Goldau and in 1807 published a detailed report about the catastrophe, considered today the first naturalistic documentation of a landslide.
What was the most expensive landslide in US history?
Direct damage exceeded $200 million (in 1983 dollars), making Thistle the most expensive landslide to date in U.S. history.
What is the #1 cause of mass movement landslides?
Gravity is the primary culprit Mass wasting, sometimes called mass movement, is the downward movement by gravity of rock, regolith (loose, weathered rock) and/or soil on the sloped top layers of the Earth's surface.
How many people died in the 2010 landslide?
The landslide that was triggered by heavy rainfall happened at midnight claiming the lives of many unaware victims. Over 1,471 people were killed and more were injured or missing. The force of the landslide wrecked multi-story buildings to pieces and the debris from the disaster buried homes and people. The debris resulting from the landslide also blocked a small river causing the river to overflow and the water swept through the disaster region in a surge up to 5 stories high. The country mourned the victims on August 15 and flags were lowered to half-mast on this day. Entertainment services on this day, both online and offline, were suspended.
What city in Colombia has a landslide?
5. Mocoa Landslide. The Putumayo department in Colombia is notorious for its history of devastating landslides. One such landslide claimed the lives of over 300 people on April 1, 2017, in the city of Mocoa . The landslide and flash floods were triggered by heavy rainfall.
What township was the Guinsaugon landslide in?
The landslide leveled the village of Guinsaugon in the Saint Bernard township . A local elementary school that was in full session at the time of the disaster was buried in the debris. Most of the schoolchildren and staff also perished. 7.
When did the mudslide happen in the Philippines?
8. 2006 Southern Leyte Mudslide. At least 1,126 people in Southern Leyte, a province of the Philippines, lost their lives in a destructive landslide on February 17, 2006. The landslide was triggered by days of heavy rain and a low-magnitude earthquake. The landslide leveled the village of Guinsaugon in the Saint Bernard township.
What happened in the early morning?
A bus driver driving through the area was the first to notify the authorities about the landslide after he noticed the village covered in mud and earth. The landslide also trapped many villagers who were later rescued.
What were the causes of the landslide?
Heavy rainfall triggered the landslide but several factors prevalent over the long-term also had a role to play in the disaster. These factors included unplanned development, massive deforestation, construction of dams, and a shift in cultivation practices.
When did the Sunkoshi blockage happen?
3. 2014 Sunkoshi Blockage. A river was blocked resulting in the formation of a lake when a huge landslide occurred on August 2, 2014, at Nepal’s Sunkoshi river in the Sindhupalchok District. The landslide resulted in massive flooding of the adjacent areas.
Where was the worst landslide in the world?
Deadliest Landslides in the history. Landslide in the state of Vargas, 1999. The landslide occurred on December 15, 1999, in the state of Vargas, Venezuela. It was a torrential rainfall that was behind this one of the world’s worst landslides. As a result of heavy rain on the slopes of Sierra de Avila, there were thousands ...
What was the landslide in 1970?
Yungay landslide, 1970. The Yungay landslide is one of the saddest tragedy that happened in the history of landslides. The landslide was a combination of different natural disasters. The Huascarán earthquake set off a number of seismic events.
How many people died in the Sierra de Avila landslide?
The landslide is considered to be the deadliest in history as it is said to have killed 30,000 people. Yungay landslide, 1970. The Yungay landslide is one of the saddest tragedy that happened in the history ...
What caused the landslides in Shizuoka?
The landslides in the state of Shizuoka, Japan were caused as a result of Typhoon. Due to heavy rainfall as a result of the typhoon, around 1900 landslides were triggered. Multiple landslides accompanied by floods because of the typhoon resulted in serious destruction.
How many homes were destroyed in the 1980s?
Around 20,000 homes were completely demolished, 500,000 people were rendered homeless and around 1,000 people died. Landslide caused due to Mt. Saint Helens Volcano,1980. The landslides that occurred in the United States in 1980 were probably one of the largest landslides in the world.
What province did the 2010 land slide happen in?
Landslide in the Gansu province of China, 2010. There were a number of factors that resulted in this deadly natural disaster in the town of Zhouqu in Gansu province of China. The city Zhouqu was suffering from years of drought. This resulted in having very little vegetation on the slopes surrounding the city.
What happened in 1933?
The mass destruction due to landslides occurred in the town of Diexi, China in the year 1933. A massive earthquake that was recorded at 7.8 on the Richter scale was behind it. Although many towns and villages were severely damaged one that suffered the major damage was the town of Diexi. The landslide destroyed the entire town killing around 9,000 people . It was completely submerged in water and later a lake was formed where once this town stood.
How many people died in the Venezuelan landslide?
Confirming the number of fatalities proved challenging to authorities, as many bodies were buried beyond the point of recovery or washed out to sea by localized floods. While only about 1,000 bodies were recovered, an estimated 30,000 people lost their lives.
Where do landslides occur?
Most landslides occur on sloping surfaces as they need gravity to pick up steam and slide to the ground. These events can be extremely deadly. Unfortunately, landslide deaths are common in many areas of the world, especially places found around mountains, hills, and volcanoes. The worst landslides in history had the power to take thousands of lives in an instant, and millions of people still live in places that are vulnerable to landslides. This list covers the most devastating landslides of all time, as well as the destruction left behind in their aftermath.
How many people died in the 1920 Haiyuan earthquake?
It is unclear how many people were killed by the landslides as opposed to the earthquake itself, but roughly 200,000 people lost their lives due to the disaster.
How many people survived the Yungay earthquake?
A huge mass of rock and ice came tumbling down, qualifying the event as both a landslide and an avalanche. The entirety of Yungay was buried, with only about 350 people surviving. Of those 350, an astounding 300 were children saved by a benevolent clown. The clown had likely been performing for the children when the quake struck, and he led them all to a circus tent that was situated on high ground. Today, the town of Yungay exists only as a mass graveyard, and the area is pockmarked with makeshift tombstones for the victims of this terrible tragedy.
What caused the landslide in Peru?
This tragic landslide occurred due to a dam breaking, which was meant to hold back glacial meltwaters from Lake Palcacocha. This caused a flood of meltwaters to burst out of the lake and flood the city of Huaraz, Peru. After tearing through Hauraz, causing thousands of death and destroying much of the city, the waters continued across Peru and into the Pacific Ocean.
What caused the Arida River flood?
The unusually high amount of rain in the mountains near the Arida River caused debris flow into the waters that resulted in a flood. The flood caused widespread death and damage in Wakayama and also invaded the nearby city Kyoto.
How many villages were destroyed by the Lahars?
Nearly 100 villages were destroyed as a result of the lahars. Indonesia was a Dutch colony at the time, and the local Dutch leadership acted swiftly to mitigate the damage. They established the first institute of volcanology in Indonesia's history, and they also built a series of dykes to redirect lahar flows away from population centers. The area around Mount Kelut is still at risk today, as the geology is perfect for forming swift and powerful lahars.
How long ago did landslides occur?
Using this new technique, the researchers–primarily affiliated with the University of Washington, but also Portland State University–found that contrary to prior belief, a massive slide had occurred some 500 years ago.
How to date a landslide?
Such trees discovered in the mass of a landslide can be assumed to have been “killed by the landslide, and thus you can date when the landslide occurred” by radiocarbon dating their remnants.
What happens when you have a landslide?
When you have a large, catastrophic landslide, it can often uproot living trees which kills them and also encapsulates them in the landslide mass (…) If you can find them in the landslide mass, you can assume that they were killed by the landslide, and thus you can date when the landslide occurred.
How often do slopes collapse around Oso?
According to the study’s findings, slopes around Oso have been collapsing at an average rate of once every 500 years. At times, even as quickly as once every 140 years.
Did landslides happen after the ice retreated?
The soil in this area is all glacial material, so one hypothesis is the material could have fallen apart in a series of large landslides soon after the ice retreated, thousands of years ago (…) We found that that’s not the case — in fact, landslides have been continuing in recent history.
How tall was the largest landslide in Norway?
Slid 400 metres (1,312 ft) down the slope of the mountain Tjellafjellet into the Langfjorden, generating three megatsunamis in the Langfjorden and the Eresfjorden with heights of 40 to 50 metres (131 to 164 ft). The largest landslide in Norway in historic time.
What was the worst landslide in Bangladesh?
Worst landslides in Bangladesh's history. A mountain landslide caused an enormous amount of rock to slide in the Karrat Fjord in Northeast Greenland, causing a tsunami with a wave height of (initially) 90 meters, that damagad the village of Nuugaatsiaq 20 km downstream (when the wave was already much lower).
How many miles did the M 9.2 earthquake travel?
M 9.2 earthquake caused submarine landslide at Seward, and large landslides in Anchorage. One large landslide traveled for 3 miles (4.8 km) across the nearly level surface of Sherman Glacier.
How many tons of limestone did the Turtle Mountain landslide take?
30 MCM. 70 to 90. About 110 million tonnes (120 million short tons) of limestone rock slid down Turtle Mountain, reaching the opposing hills in 100 seconds and burying the eastern edge of Frank, a mining town then in Alberta. The deadliest and one of the largest landslides in Canadian history.
How long was the Molokai Volcano landslide?
Submarine landslides. Long. The northern third of East Molokai Volcano collapsed suddenly into the Pacific Ocean in a 25-mile (40 km) wide landslide with a 120-mile (193 km) run-out that climbed uphill 900 feet (274 m) from the Hawaiian Deep over the last 80 miles (130 km).
How much rock fell on Turner Glacier?
40 million metric tons of rock fell onto the surface of Turner Glacier . . 45 million metric tons of rock, snow, and ice, slid 1 kilometre (0.6 mi) down the mountainside and 2 kilometres (1.2 mi) across the surface of Steele Glacier .
How high was the tsunami in the island of New Guinea?
During a volcanic eruption, a significant portion of the island slid 800 metres (2,625 ft) into the sea, generating tsunamis of up to 12 to 15 metres (39 to 49 ft) in height that struck nearby islands and traveled as far south as New Guinea, where they were 8 metres (26 ft) high. The waves killed around 3,000 people.
What is the largest landslide in the world?
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. That landslide had a volume of 2.8 cubic kilometers (0.67 cubic miles) of material and the landslide traveled about 22.5 kilometers (14 miles) down the North Fork Toutle River.
How many deaths result from landslides each year?
An average of 25-50 people are killed by landslides each year in the United States. The worldwide death toll per year due to landslides is in the thousands. Most landslide fatalities are from rock falls, debris flows, or volcanic debris flows (called lahars). Twenty-three people were killed, at least 167 injured, and more than 400 homes were...
Why study landslides?
Landslides are a serious geologic hazard common to almost every State in the United States. As people move into new areas of hilly or mountainous terrain, it is important to understand the nature of their potential exposure to landslide hazards, and how cities, towns, and counties can plan for land-use, engineering of new construction and...
What is a landslide and what causes one?
A landslide is defined as the movement of a mass of rock, debris, or earth down a slope. Landslides are a type of "mass wasting," which denotes any down-slope movement of soil and rock under the direct influence of gravity. The term "landslide" encompasses five modes of slope movement: falls, topples, slides, spreads, and flows. These are further...
What is the USGS landslide map?
The U.S. Geological Survey today unveiled a new web-based interactive map that marks an important step toward mapping areas that could be at higher risk for future landslides. In collaboration with state geological surveys and other federal agencies, USGS has compiled much of the existing landslide data into a searchable, web-based interactive map called the U.S. Landslide Inventory Map.
What is real time landslide monitoring?
Real-time monitoring of landslides. Landslides cause fatalities and property damage throughout the Nation. To reduce the impact from hazardous landslides, the U.S. Geological Survey develops and uses real-time and near-real-time landslide monitoring systems.
What is a landslide overview map?
The accompanying landslide overview map of the conterminous United States is one of a series of National Environmental Overview Maps that summarize geologic, hydrogeologic, and topographic data essential to the assessment of national environmental problems. The map delineates areas where large numbers of landslides exist and areas which are...
