A new light on arresting mechanism of dynamic earthquake faulting

Details A new light on arresting mechanism of dynamic earthquake faulting A new light on arresting mechanism of dynamic earthquake faulting

Jul 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999georl..26.1997k&link_type=abstract

Geophysical Research Letters, Volume 26, Issue 13, p. 1997-2000

Physics

19

Seismology, Seismology: Earthquake Dynamics And Mechanics, Seismology: Theory And Modeling

Scientific paper

Classic analyses have shown that dynamic growth of a shear crack cannot be arrested in a uniformly stressed elastic medium with homogeneously distributed fracture strengths. This leads to a general supposition that earthquake rupture growth is arrested by inhomogeneities in the distributions of strengths or stresses. We propose a novel idea for arresting mechanism of dynamic crack growth in the simulation with no constraints on the crack geometry. Our analysis shows that the arresting occurs spontaneously soon after crack bending even in the homogeneous medium and that in-homogeneities are indispensable not for stopping crack growth, but for its promotion.

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