Here I introduce ALLCAL, one of the earthquake simulators being developed by scientists of the Southern California Earthquake Center (SCEC). This article focuses on aspects that may differentiate ALLCAL from other simulators in the group (Tullis et al., 2012a). Accordingly, few specific results are included here; however, an accompanying overview paper (Tullis et al., 2012b) assembles and compares outputs from ALLCAL and other earthquake simulators.

The heart of any earthquake simulator is the calculation of stresses and displacements from many dislocation elements. ALLCAL uses triangular elements in a whole space. Static values of stresses...
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