A note on adding viscoelasticity to earthquake simulators

Bulletin of the Seismological Society of America
By:

Links

Abstract

Here, I describe how time‐dependent quasi‐static stress transfer can be implemented in an earthquake simulator code that is used to generate long synthetic seismicity catalogs. Most existing seismicity simulators use precomputed static stress interaction coefficients to rapidly implement static stress transfer in fault networks with typically tens of thousands of fault patches. The extension to quasi‐static deformation, which accounts for viscoelasticity of Earth’s ductile lower crust and mantle, involves the precomputation of additional interaction coefficients that represent time‐dependent stress transfer among the model fault patches, combined with defining and evolving additional state variables that track this stress transfer. The new approach is illustrated with application to a California‐wide synthetic fault network.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title A note on adding viscoelasticity to earthquake simulators
Series title Bulletin of the Seismological Society of America
DOI 10.1785/0120160192
Volume 107
Issue 1
Year Published 2017
Language English
Publisher Seismological Society of America
Contributing office(s) Earthquake Science Center
Description 7 p.
First page 468
Last page 474