Self-organizing fault systems and self-organizing elastodynamic events on them: Geometry and the distribution of sizes of events

Details Self-organizing fault systems and self-organizing elastodynamic events on them: Geometry and the distribution of sizes of events Self-organizing fault systems and self-organizing elastodynamic events on them: Geometry and the distribution of sizes of events

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3117603s&link_type=abstract

Geophysical Research Letters, Volume 31, Issue 17, CiteID L17603

Physics

2

Seismology: Earthquake Dynamics And Mechanics, Seismology: Seismicity And Seismotectonics, Seismology: Theory And Modeling, Structural Geology: Fractures And Faults, Tectonophysics: Continental Tectonics-Extensional (0905)

Scientific paper

We introduce a new model which both generates a self-organizing complex segmented fault system which then accommodates finite strain, and generates sequences of elastodynamic events on that complex fault system. This opens up a new realm of study of populations of cascading elastodynamic ruptures on complex fault systems. We examine the distribution of sizes of events in the model, and its dependence on fault geometry. We see an evolution from a more Gutenberg-Richter like distribution of events at smaller strains to a more characteristic like distribution at larger strains. We see relative insensitivity of the distribution of sizes of events to the friction used. Examining the distributions of sizes of events on fault segments of different lengths, we find support for a modified segmentation hypothesis whereby segments both break in power law small events and occasionally participate in cascading multisegment larger ruptures, but also predominantly break as a unit.

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