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A comparison of satellite laser ranging and seismicity data in the Aegean Region
Author(s) -
Jackson James,
Haines John,
Holt William
Publication year - 1994
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/94gl02734
Subject(s) - induced seismicity , geology , seismology , geodetic datum , satellite laser ranging , seismic moment , geodesy , strain rate , strain (injury) , laser ranging , fault (geology) , medicine , laser , physics , materials science , optics , metallurgy
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 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 (>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.