This is data from Phase II of the recording. Three component geophones were recorded at the surface, 300 m, 1.5 and 2.9 km in the Cajon Pass drillhole. The recording lasted from November, 1993 to August, 1995.
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.