Body and Surface Wave Modeling of Observed Seismic Events
Semi-annual technical rept. 1 Oct 1979-31 Mar 1980
CALIFORNIA INST OF TECH PASADENA SEISMOLOGICAL LAB
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The research performed under this contract during the period 1 October through 31 March 1980 can be divided into three main topics, excitation of surface waves from complex source regions, modeling of P sub n to PL waves for source inversion and determining earthquake source characteristics using synthetic teleseismic long period body and surface waves. In Section II preliminary results are presented which show the feasibility of using the representation theorem to investigate the excitation of surface waves due to complicated sources in complex source regions. In Section III, it is shown that a simple one-layer crust mantle structure is adequate to model P sub n to PL waves at ranges 1 to 12 degrees for most of the Western U.S. Section V concerns the use of synthetic long period body and surface waves to determine the depth, dimensions, and moment of the 1976 Friuli, Italy earthquake and its principal aftershock.
- Radiofrequency Wave Propagation