AGU Session T20: Earthquake Cycle Deformation: Moving Beyond Kinematic Elastic Models

An AGU session announcement, forwarded from Kaj Johnson, Indiana:

Please consider submitting to Tectonophysics session T20 at the AGU Fall 2009 meeting in San Francisco:

T20: Earthquake Cycle Deformation: Moving Beyond Kinematic Elastic Models

Description: For the past three decades, interseismic deformation recorded with Geodetic instruments has been described by the classic elastic half space model Where deep extensions of seismogenic faults slip steadily at the long-term Fault slip rate. In recent years, as geodetic data in deforming regions has Become more abundant, investigators have proposed models of interseismic deformation that move beyond the entirely kinematic elastic half-space model. This session brings together different perspectives on models of deformation throughout the earthquake cycle, models that collectively are building toward a more realistic description of lithosphere structure, fault geometry, and bulk and fault rheology. This evolving body of work includes models that incorporate viscous flow in the asthenosphere, heterogenous material properties, inelastic off-fault deformation, frictional fault slip, and far-field driving loads. Because interseismic deformation is intimately linked to earthquakes and coseismic slip, this session also seeks contributions that examine models of the full earthquake cycle, including earthquake nucleation and rupture, afterslip, and interseismic fault creep. Of particular interest are studies that use geologic and/or geophysical data to constrain models of interseismic deformation, and studies that relate model predictions to seismicity or measurements of long-term deformation.

Conveners:
Eric A Hetland
University of Michigan
ehetland@umich.edu

Kaj M Johnson
Indiana University
kajjohns@indiana.edu