Sizing up Seismology

Hazards geologist, Ray Cakir, supervises seismic survey measurements made at the Ocosta Elementary School near Westport, Wa by undergraduate student assistants Frankie Pavia and Alec Cole.
Hazards geologist, Ray Cakir, supervises seismic survey measurements made at the Ocosta Elementary School near Westport, WA by undergraduate student assistants Ben LeVeque and Alec Cole. Photo courtesy of Randall J.  LeVeque, January 2013.

Despite the dreary weather, Washington Geologic Survey’s hazards geologists have been hard at work in the field. They are busy collecting seismic survey measurements and continually adding to a data catalog of shear wave velocity profiles throughout Washington State. Shear wave velocity is an important factor in earthquake-resistant design as designated by the International Building Code (IBC). These seismic site characterizations are part of a USGS-funded series of investigations and reports intended to provide geologic data and information essential to mitigate earthquake losses. Our previous reports from 2009-2011 can be obtained by visiting the USGS Earthquakes Hazards Program External Research Support site.