What happened during the 2014 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. Most tragically, it caused 43 fatalities in the community of Steelhead Haven near Oso, Washington.

What was the final event that triggered the fatal 2014 Oso mudslide in Washington state?

A deadly landslide that killed 44 and obliterated a riverside neighborhood in Washington state last March was fueled by rain soaking the site of an eight-year-old landslide, while logging in the area may have also played a role, according to a scientific report released Tuesday.

Where is the Oso landslide?

Oso
2014 Oso mudslide/Location

What was unique about the 2014 Oso landslide?

The mud, soil and rock debris left from the mudslide covered an area 1,500 ft (460 m) long, 4,400 ft (1,300 m) wide and deposited debris 30 to 70 ft (9.1 to 21.3 m) deep. A national geologist stated the flow of the landslide was extreme because of the extraordinary run-out of mud and debris.

What is the slowest type of mass wasting process?

Creep. Soil creep is a slow and long term mass movement.

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 fastest mass movement?

Rockfalls occur when rock fragments fall from steep cliffs. This is the fastest type of mass movement. The fragments may be as tiny as pebbles or as huge as giant boulders. Landslides occur when large amounts of loose rock combined with soil fall suddenly down a slope.

Where is the largest landslide located?

In 1980, the explosion of Mount St. Helens in the state of Washington, United States, triggered the largest (on land) landslide ever recorded. Mount St. Helens is a stratovolcano situated in the Cascade Mountains, 88 kilometers northeast of Portland.

What is the deadliest landslide in history?

Deadliest Landslides In Recorded History

• 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)

What is the largest landslide in history?

the Mount St. Helens
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.

When did the Oso landslide happen in 2014?

MARCH 29, 2014: Rescue workers dig through a pile of debris to look for victims along Highway 530. A week earlier, on March 22, a massive landslide ripped through the area, killing 43 people and destroying dozens of homes.

What kind of observations did OSO-3 make?

The instrument flown on OSO-3 obtained extensive observations of solar flares, the diffuse component of cosmic X-rays, and the observation of a single flare episode from Sco X-1. The gamma-ray instrument registered 621 events attributed to cosmic gamma- rays above 50 MeV.

How many people died in the Oso Washington mudslide?

On this day in 2014, 43 people die when a portion of a hill suddenly collapses and buries a neighborhood in the small community of Oso, Washington, some 55 miles northeast of Seattle. It was one of the deadliest mudslides in U.S. history.

How does the OSO satellite acquire the Sun?

The satellite had two principle components, a continuously spinning wheel in which the hard X-ray experiment is mounted with a radial view, and a sail component which was served to acquire the sun during the orbit day. The attitude control system maintained the scan plane orientation to within a few degrees of the sun.

https://www.youtube.com/watch?v=Kn-0eVHz5WI