The 22 March 2014 Oso Landslide - Findings of the GEER Reconnaissance Investigation

Explore the findings of the NSF-supported Geotechnical Extreme Events Reconnaissance (GEER) investigation of the 2014 Oso Landslide in this 21-minute conference talk from the AGU Fall Meeting. Delve into the deadliest landslide disaster in U.S. history, which claimed 43 lives in Snohomish County, Washington. Examine the geological context, including the glacial sediment sequence and geomorphic evidence of past landslides in the area. Analyze the potential triggering factors, such as intense rainfall and changes in groundwater dynamics. Discover the six distinctive landslide zones identified during field reconnaissance and their unique characteristics. Learn about the hypothesized two-stage movement of the landslide and its implications. Compare the regional landslide fatality risk to international guidelines and U.S. dam safety standards. Gain valuable insights into this catastrophic event and its broader implications for landslide risk assessment and management.

The 22 March 2014 Oso Landslide, Snohomish County, Washington: Findings of the GEER...