EarthRef.org Reference Database (ERR)
Development and Maintenance by the EarthRef.org Database Team

Detailed Reference Information
Goes & Ritsema 1995
Goes, S. and Ritsema, J. (1995). A broadband P wave analysis of the large deep Fiji Island and Bolivia Earthquakes of 1994. Geophysical Research Letters 22: doi: 10.1029/95GL02011. issn: 0094-8276.

The complex broadband P-wave displacement recordings of the 570 km deep March 9, 1994, Mw 7.6 Fiji Island and the 660 km deep June 9, 1994, Mw 8.2 Bolivia earthquakes are analyzed to estimate the spatial and temporal characteristics of their ruptures. We model relative arrival times and amplitudes of coherent subevents in P waveforms, and perform waveform analyses. We resolve: (1) short rupture durations relative to their seismic moments, 12 and 40 s for the Fiji and Bolivia earthquakes, respectively; (2) small areas of main moment release, for both earthquakes 30¿40 km2; (3) high stress drops compared to shallow earthquakes, with the stress drop of the Bolivia event (283 MPa) being significantly higher than the stress drop of the Fiji event (26 MPa); (4) small changes in mechanism (up to 10¿ changes in fault plane orientation); and (5) a steeply dipping rupture plane for the Fiji earthquake, and a shallowly dipping rupture plane for the Bolivia earthquake. Details of the ruptures are difficult to resolve using teleseismic P waveforms. ¿ American Geophysical Union 1995

BACKGROUND DATA FILES

Abstract

Keywords
Seismology, Earthquake parameters, Seismology, Body wave propagation
Journal
Geophysical Research Letters
http://www.agu.org/journals/gl/
Publisher
American Geophysical Union
2000 Florida Avenue N.W.
Washington, D.C. 20009-1277
USA
1-202-462-6900
1-202-328-0566
service@agu.org
Click to clear formClick to return to previous pageClick to submit