Viscoelastic deformation for a clustered earthquake cycle

Details Viscoelastic deformation for a clustered earthquake cycle Viscoelastic deformation for a clustered earthquake cycle

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3110610m&link_type=abstract

Geophysical Research Letters, Volume 31, Issue 10, CiteID L10610

Physics

12

Tectonophysics: Dynamics, Seismotectonics, Tectonophysics: Rheology-Crust And Lithosphere, Tectonophysics: Plate Boundary-General (3040)

Scientific paper

The clustering of earthquakes in time on the same fault affects the rate and pattern of interseismic deformation. We develop a simple analytic viscoelastic model of the surface velocity field through a clustered earthquake cycle by superposing the velocities of individual earthquake cycles of constant period but varying phase. Velocity profiles prior to and after an earthquake show a wider range of behavior than they do for earthquake cycles with constant repeat times. These new types of behavior provide possible explanations for discrepancies between geologic estimates of long-term fault slip rates and slip rate estimates from geodetic data.

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