3 - D rupture dynamics with kinematic constraints : the 1992 Landers
نویسنده
چکیده
The 1992 magnitude 7.3 Landers, California, earthquake is modeled kinemat-ically and dynamically with a three-dimensional nite-diierence method. The kinematic model uses xed, prescribed rupture parameters from the kinematic slip inversion by Wald and Heaton (1994413]) and the dynamic models generate spontaneous ruptures controlled by a prestress distribution computed from the slip distribution used in the kinematic simulation. The dynamic ruptures that produce near-fault radiation similar to that for the kinematic simulation are characterized by propagation along a complex path with highly variable speed and rise time, and they reproduce the general slip pattern used to compute the initial stress distribution. These dynamic simulations are characterized by rupture energy releases of 5-10 MJ/m 2 .
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