Physics – Geophysics
Scientific paper
Aug 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000georl..27.2297k&link_type=abstract
Geophysical Research Letters, Volume 27, Issue 15, p. 2297-2300
Physics
Geophysics
5
Marine Geology And Geophysics: Plate Tectonics, Seismology: Earthquake Dynamics And Mechanics, Tectonophysics: Dynamics, Gravity And Tectonics, Seismotectonics
Scientific paper
We investigate possible driving forces behind the occurrence of the 1998 Antarctic plate earthquake. We determine first a regional strain rate field associated with the accommodation of relative plate motion, and second, a vertically averaged minimum deviatoric stress field associated with lithospheric gravitational potential energy differences and deglaciation of the Antarctic ice cap. We find that the mechanism of this event is inconsistent with strain orientations inferred from kinematic modeling of a diffuse zone of deformation within the triple junction region. Stress perturbations associated with deglaciation cannot be ruled out as a triggering mechanism for this event.
Holt William E.
Kreemer Corné
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