Modeling dynamic triggering of tectonic tremor using a brittle‐ductile friction model. Issue 19 (7th October 2013)

• Record Type: Journal Article
• Authors: Trugman, Daniel T.; Daub, Eric G.; Guyer, Robert A.; Johnson, Paul A.
• Is Part Of: Geophysical research letters. Volume 40:Issue 19(2013:Oct.)
• Page Start: 5075
• Page End: 5079
• Publication Date: 2013-10-07
• Subjects: Geophysics -- Periodicals; Planets -- Periodicals; Lunar geology -- Periodicals; 550
• DOI: 10.1002/grl.50981
• Languages: English
• ISSNs: 0094-8276

Abstract

<abstract abstract-type="main"> <title>Abstract</title> <p>[1] We study the physics of dynamically triggered tectonic tremor by applying a brittle‐ductile friction model in which we conceptualize the tremor source as a rigid block subject to driving and frictional forces. To simulate dynamic triggering of tremor, we apply a stress perturbation that mimics the surface waves of remote earthquakes. The tectonic and wave perturbation stresses define a phase space that demonstrates that both the timing and amplitude of the dynamic perturbations control the fundamental characteristics of triggered tremor. Tremor can be triggered instantaneously or with a delayed onset if the dynamic perturbation significantly alters the frictional state of the tremor source.</p> </abstract>