Physics
Scientific paper
Sep 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001georl..28.3341p&link_type=abstract
Geophysical Research Letters, Volume 28, Issue 17, p. 3341-3344
Physics
16
Geodesy And Gravity: Space Geodetic Surveys, Seismology: Seismicity And Seismotectonics, Structural Geology: Fractures And Faults, Structural Geology: Remote Sensing
Scientific paper
We present InSAR observations of deformation due to two MS=6.6 earthquakes in the South Iceland Seismic Zone in June 2000. Coseismic deformation predominates in the ERS interferograms. Range change, due to mainly right-lateral strike-slip on N-S striking faults, amounting to more than 15 cm is observed, although displacement is mainly perpendicular to the satellite look direction. Using elastic dislocation models in a trial-and-error scheme, we find a best-fitting model that agrees well with the aftershock locations and moment magnitudes estimated from seismograms. The June 17 model has a fault patch 16 km long, 10 km deep, striking N05°E, dipping 86°, with a slip maximum of 2.40 m. The June 21 model has a vertical patch 15 km long, 9 km deep, striking N01°W, with a slip maximum of 2.15 m.
Árnadóttir Thóra
Feigl Kurt L.
Pedersen Rikke
Sigmundsson Freysteinn
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