Earthquake Science Center Seminars
Tectonics of the western United States illuminated by seismic surface-wave tomography
Fred Pollitz, USGS
July 8, 2009
Closed captions are generally available a few days after the seminar. To turn them on, click the ‘CC’ button on the video player. For older seminars in the archive that don’t have closed captions, please email us, and we will do our best to accommodate your request.