Homestead Valley, California, Aftershocks Recorded on Portable Seismographs, SCEC

Information on USGS OFR 94-710 is available on-line via the World Wide Web: "data.scec.org/ftp/ca.earthquakes/homestead/" "data.scec.org/fault_index/homeval.html" The following information on the Homestead Valley earthquake aftershock data set was extracted from the Southern California Earthquake Center Data Center WWW site ("data.scec.org/"): On March 15, 1979, four moderate earthquakes (ML 4.9, 5.3, 4.5, 4.8) occurred in the Homestead Valley area of the Mojave Desert.

Recently, phase data from portable instruments deployed by the U. S. Geological Survey on March 17 - 18, 1979 have been merged with those recorded by the Southern California Seismic Network (SCSN). The results of this study have been published in a U.S.Geological Survey-Open File Report. -homestead.hyp relocated hypocenters with portable data -homestead.phase phase data from portable instruments (hypoinverse format) -hvnetandport.dat SCSN and portable data -lnv8z0.mod velocity model used in relocations -homestead.sta portable instrument locations