Abstract Strong earthquakes cause aftershock sequences that are clustered in time according to a power decay law, and space along their extended rupture, shaping typically elongate pattern of locations. A widely used approach model earthquake clustering, the Epidemic Type Aftershock Sequence (ETAS) model, shows three major biases. First, conventional ETAS assumes isotropic spatial triggering, w...

The (Mw6.1, 7.3, 6.2) 1992 Landers earthquakes began on April 23 with the Mw6.1 1992 Joshua Tree preshock and form the most substantial earthquake sequence to occur in California in the last 40 years. This sequence ruptured almost 100 km of both surficial and concealed faults and caused aftershocks over an area 100 km wide by 180 km long. The faulting was predominantly strike slip and three mai...

The slope instability brought on by earthquakes frequently results in significant property damage and casualties. At present, the research displacement response of a under earthquake has mainly emphasized action mainshock, without accounting for impact an aftershock, spatial variability material parameters is often neglected. fully accounted this paper, dynamic reliability permanent (DP) produc...

SUMMARY The productivity of a magnitude m event can be characterized in term triggered events above − Δ: it is the number direct ‘descendants’ $\nu _\Delta$ and all $V_\Delta$. There evidence favour discrete exponential distribution for both $V_\Delta$ with dominant initial (the case aftershock cluster). We consider general Epidemic Type Aftershock Sequence model adapted to any _\Delta$. Our fi...

Long-period strong motions (> 0.9 second) are simulated in the Kobe area for the mainshock (1/17/95) and the aftershock (2/2/95) of the Hyogoken-Nanbu (Kobe) earthquake. In order to model ground motions in the realistic and highly heterogeneous basin structure, an unstructured 3D FEM (Finite Element Method) is used, which runs efficiently on parallel computers. The simulation results show stron...