The ghostly tree trunks of once-submerged red cedars pictured in the July Image of the Month have played a key role in helping geologists reconstruct the events of the last Cascadia Subduction Zone (CSZ) magnitude 9 earthquake. As DGER chief hazards geologist, Tim Walsh, recently explained to a National Geographic television crew (see image below), […]
Tag: subduction zone
Aberdeen Landslides and Liquefaction Susceptibility Report Published
The Washington State Geologic Survey announces the publication of Report of Investigations 36. Earthquake-induced landslide and liquefaction susceptibility and initiation potential maps for tsunami inundation zones in Aberdeen, Hoquiam, and Cosmopolis, Grays Harbor County, Washington, for a M9+ Cascadia subduction zone event, by S. L. Slaughter, T. J. Walsh, Anton Ypma, K. M. D. Stanton, […]
Launch of the Seismic Scenarios Catalog
Today Washington State Geological Survey scientists were on hand as John Schelling, earthquake program manager for the Washington Military Department Emergency Management Division (EMD), presented a live webinar release of the Seismic Scenario Catalog, hosted through DNR in a GIS environment. The catalog is a compilation of results from 20 scenario models run using FEMA’s […]
WASHINGTON STATE GEOLOGY NEWS 