Fault step-over rheology and its effect on earthquake rupture propagation

Finzi, Yaron and Langer, Sebastian (2011). Fault step-over rheology and its effect on earthquake rupture propagation. In: APEC Cooperation for Earthquake Simulation (ACES) Workshop on Advances in Simulation of Multihazards, Maui, Hawaii, USA, (). 1-5 May 2011.

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Author Finzi, Yaron
Langer, Sebastian
Title of paper Fault step-over rheology and its effect on earthquake rupture propagation
Conference name APEC Cooperation for Earthquake Simulation (ACES) Workshop on Advances in Simulation of Multihazards
Conference location Maui, Hawaii, USA
Conference dates 1-5 May 2011
Publication Year 2011
Sub-type Oral presentation
Language eng
Abstract/Summary We study the effects that damage and porosity may have on rupture propagation by reducing material strength and increasing both on-fault and off-fault dissipation of earthquake energy within the step-over zone. We find that the presence of damage and porosity in step-over zones significantly reduce the width of step-overs that may be considered as rupture barriers, and therefore greatly increases fault-system stability. The results are of practical importance to seismic hazard analysis where probable length of rupture and earthquake magnitude are estimated based on mapped active faults. The results portray the importance of assessing the material state and characteristics of fault step-over zones, rather than only the general geometry of the step-over.
Keyword earthquake rupture dynamics
Rheology
Damage
Earthquake Prediction
Q-Index Code EX
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Conference Paper
Collections: Temporary Review
Earth Systems Science Computational Centre Publications
 
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Created: Wed, 07 Dec 2011, 13:35:56 EST by Yaron Finzi on behalf of Earth Systems Science Computational Centre