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EARTHQUAKE EPICENTER DETERMINATION USING DELTA-T DATA

George Pararas-Carayannis and James Sasser

HAWAII INSTITUTE OF GEOPHYSICS REPORT HIG-65-16 (52 pages)

University of Hawaii, Honolulu

Prepared for Officeof Naval Research

(As abstracted by Storming Media - Pentagon Reports)

ABSTRACT: Theoretical time differences in the arrival of P-waves at different seismic stations around the Pacific were compiled and plotted by digital computer and by hand. Time-difference curves were plotted for each pair of seismic stations; such curves will allow the quick determination of earthquake epicenters.

The following seismic stations were used in the compilations: Honolulu, Hawaii; Tucson, Arizona; Hong Kong; College, Alaska; and Sitka, Alaska.

Included in this report is a modified version of the spherical hyperbola program that was used in the compilation. Travel-time difference charts are included as appendices for all combinations of the seismic stations listed above. (Author)


Decriptors / Key Keywords relating to this report: *SEISMOLOGY, *POSITION FINDING, POSITION FINDING, PROPAGATION, MARINE GEOPHYSICS, PACIFIC OCEAN.

Subject Categories : SEISMOLOGY, SEISMIC DETECTION AND DETECTORS

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