Source mechanisms of moderate-size earthquakes and stress orientation in mid-plate South America
نویسندگان
چکیده
منابع مشابه
AE Source Orientation by Plate Wave Analysis
Lead breaks (Hsu-Neilsen source) were used to generate simulated acoustic emission signals in an aluminum plate at angles of 0, 30, 60, and 90 degrees with respect to the plane of the plate. This was accomplished by breaking the lead on slots cut into the plate at the respective angles. The out-of-plane and in-plane displacement components of the resulting signals were detected by broad band tr...
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We show that the spatial heterogeneity in the coseismic displacement of large earthquakes likely reflects the spatial characteristics of the frictional properties and that it can be inferred from the stress drop of moderate-sized earthquakes. We analyzed stress drops of 686 earthquakes with magnitudes of 4.0 to 5.0 off the south-east of Hokkaido, Japan, and investigated the spatial heterogeneit...
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Zacharie Duputel,1 Luis Rivera,2 Hiroo Kanamori1 and Gavin Hayes3 1Seismological Laboratory, California Institute of Technology, Pasadena, CA, USA. E-mail: [email protected] 2Institut de Physique du Globe de Strasbourg, IPGS UMR 7516, CNRS and Université de Strasbourg (EOST), France 3U.S. Geological Survey, National Earthquake Information Center (contracted by Synergetics, Inc.), Golden,...
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Space geodetic estimates of the rate of Nazca-South America convergence and Nazca-Pacific spreading averaging over several years show that present day rates are significantly slower than the 3 million year average NUVEL-1A model. The implied rates of deceleration are consistent with longer term trends extending back to at least 20 Ma, about the time of initiation of Andes growth, and may reflec...
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ژورنال
عنوان ژورنال: Geophysical Journal International
سال: 1988
ISSN: 0956-540X,1365-246X
DOI: 10.1111/j.1365-246x.1988.tb01138.x