Velocity Models for the Los Angeles Basin Using Dense Arrays

Robert Clayton & Dan Hollis, Caltech Seismological Laboratory & Sisprobe

Wednesday, March 3, 2021 at 10:30 AM

Online-only seminar via Microsoft Teams

Seismic hazard in the Los Angeles area is controlled in large part by the near-surface shear-wave velocity. Maps of Vs30 have traditionally filled this role, but it is increasingly recognized that we need estimate that extend down to 2-3 km or deeper to properly explain the level or lateral variations of strong ground motions. In this talk we present shear wave velocity models determined using dense seismic arrays. Specifically, we present results for the coastal area, the central LA Basin and the northern LA Basin. We will also present a plan to conduct a survey across the entire LA Basin region using a dense array.

Closed captions are typically available a few days after the seminar. To turn them on, press the ‘CC’ button on the video player. For older seminars that don’t have closed captions, please email us, and we will do our best to accommodate your request.

Video Podcast