Was the Oso mudslide predictable?
Scientists predicted the Oso landslide, but nothing was done. The report did say that heavy rain in the weeks before the landslide were a factor. It suggested that the destabilization of soil from a 2006 slide in the same place and logging.
What triggered the Oso landslide?
Oso mudslide and recovery timeline 1900s – Seasonal high water begins eroding the hill that eventually gave way in the 2014 mudslide. The Stillaguamish River channel pushes north. 1930s to 1950s – Logging is the economic engine of the Oso area. Some of the logged area is sensitive to shifting because of groundwater.
How fast was the Oso landslide?
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.
How long did the Oso landslide last?
approximately 2.5 minutes
Ground vibrations generated by the Oso landslide were recorded at several regional stations and subsequently analyzed by the Pacific Northwest Seismic Network (PNSN). The initial collapse began at 10:37:22 a.m. local time (PDT; 17:37:22 UTC), lasting approximately 2.5 minutes.
How fast did the Oso landslide travel?
How deep was the mud that resulted from the slide?
The debris field from the slide covered a square mile and was estimated to be 80 feet deep in some places. In July 2014, search and rescue workers discovered what was believed to be the last body of the 43 victims killed in the disaster.
How fast was the Oso slide estimated to have moved?
What caused the Oso mudslide 2014?
On March 22, 2014, after a month of heavy rainfall, a mountain gave way near Oso, Washington; the resulting and historic mudslide killed 43 people. In this lesson, your task is to call attention to the tragedy by creating an app showing the area before and after the mudslide.
How do I add an Oso slide area to a map?
Identify the Aerial Imagery Oso Slide Area layer and click Add. The layer is added to the map, and the map viewer zooms in to its extent. This is the imagery that was captured right after the 2014 Oso landslide, in a rural area of Snohomish County, Washington (north of Seattle).
How do I change the color of a symbol in Oso mudslide?
Ensure the Oso Mudslide Impact Area is selected, and on the Settings (light) toolbar, click Styles. In the Styles pane, under Try a drawing style, for Location (single symbol), click Style options. Click the symbol under Symbol style. In the Symbol style window, turn off Enable fill. Expand Outline and Colors, and choose a red color.
How many people were killed in the Washington mudslide?
“Landslide kills three, injures others in Washington state”. Reuters. Retrieved March 23, 2014. ^ Associated Press (July 22, 2014). “Last body found in Washington mudslide”.