We will acquire a continuous profile of shallow shear-velocitymeasurements across the Los Angeles and San Gabriel Valley basins.The profile will use the refraction microtremor method of Louie (2001).An array of 45-120 Texans with 4.5-Hz phones will belaid out at 20-m intervals along the San Gabriel RiverBike Path, and rolled along in 15-sensor increments.Each array increment is kept in place at least 10 minutesto record microtremor noise. Fieldwork is expected totake 17 full days. Equipment will be in the field 20-25 days.
EarthScope Consortium operates the
NSF Geodetic Facility for the Advancement of Geoscience (GAGE)
and NSF Seismological Facility for the Advancement of Geoscience (SAGE).
Any opinions, findings and conclusions, or recommendations expressed
in this material do not necessarily reflect the views of the
U.S. National Science Foundation.