Mathematics
Scientific paper
Dec 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994georl..21.2849j&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 21, no. 25, p. 2849-2852
Mathematics
22
Earthquakes, Geodesy, Satellite Observation, Seismic Waves, Seismology, Strain Measurement, Strain Rate, Geodetic Surveys, Greece, Grid Generation (Mathematics), Laser Range Finders, Satellite-Borne Instruments, Velocity Distribution
Scientific paper
In this study we compare the strain rates obtained from earthquake moment tensors in the time interval 1911-92 in Greece with measured velocities of Satellite Laser Ranging (SLR) stations relative to Eurasia. We find that the SLR measurements do not require strain different in orientation from that seen in the earthquakes, but simply more of it. The clearest deficit is in the SE Aegean where earthquakes this century can account for virtually none of the measured SLR strain rates. By contrast, in the northern Aegean and NW Turkey the earthquakes can account for a substantial part (greater than 50%) of the measured strain rates. By using both geodetic and seismic data to localize apparent deficits in seismically-released strain, this study represents a first step towards using space-based geodesy for crude regional seismic risk assessment.
Haines John
Holt William
Jackson James
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