Travel Time Curves at Small Distances and Wave Velocities of Principal Phases in the Southern California Ranges

Author: Grobecker, Alan John

Year: 1941

Degree: Master's thesis

Advisors: Gutenberg, Beno; Richter, Charles F.

Committee Member: Unknown, Unknown

Option: Geology

DOI: 10.7907/FNRC-KA24

Abstract

Four shocks with epicenters in the region of the northern end of the Peninsular Range of Southern California were studied. Travel times of numerous phases of these four shocks were measured from seismograph records of stations at Pasadena, Mount Wilson, Riverside, La Jolla, Santa Barbara, Tinemaha and Haiwee, in Southern California.

The velocities of propagation of eight principal phases were determined. Thicknesses of three layers above a depth of about 40 k.m. in the earth's crust were calculated.

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