Preliminary Report on the 16 October 1999 M 7.1 Hector Mine, California, Earthquake

Abstract

The M_w 7.1 Hector Mine, California, earthquake occurred
\nat 9:46 GMT on 16 October 1999. The event caused minimal
\ndamage because it was located in a remote, sparsely populated part of the Mojave Desert, approximately 47 miles
\neast-southeast of Barstow, with epicentral coordinates
\n34.59°N 116.27°W and a hypocentral depth of 5 ± 3 km.
\nTwelve foreshocks, M 1.9-3.8, preceded the mainshock during
\nthe previous twelve hours. All of these events were
\nlocated close to the hypocenter of the mainshock.