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


Grobecker, Alan John (1941) Travel Time Curves at Small Distances and Wave Velocities of Principal Phases in the Southern California Ranges. Master's thesis, California Institute of Technology. doi:10.7907/FNRC-KA24.


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.

Item Type:Thesis (Master's thesis)
Subject Keywords:Peninsular Ranges, travel time curves, epicenters, p-waves
Degree Grantor:California Institute of Technology
Division:Geological and Planetary Sciences
Major Option:Geology
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Gutenberg, Beno (advisor)
  • Richter, Charles F. (co-advisor)
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 January 1941
Additional Information:Supplemental Files Information: Travel-times vs. distance of all measured phases: Supplement 1 from "Travel time curves at small distances and wave velocities of principal phases in the southern California ranges" (Thesis).
Record Number:CaltechTHESIS:03102010-084009811
Persistent URL:
Related URLs:
URLURL TypeDescription 1 in CaltechDATA: Travel-times vs. distance of all measured phases
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:5584
Deposited By: Tony Diaz
Deposited On:13 Apr 2010 17:05
Last Modified:21 Dec 2019 01:44

Thesis Files

PDF (Thesis) - Final Version
See Usage Policy.

PDF (Travel time-distance curves) - Supplemental Material
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