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Keck Foundation to construct a Collaboratory for Interseismic Simulation and Modeling (CISM) that will provide a unique environment for developing large-scale numerical models that can simulate sequences of fault ruptures and the seismic shaking they produce. In 2015, SCEC received a three-year grant from the W. The CISM project has recently demonstrated the ability to execute all of the pathways shown here, including the full-physics pathway, RSQSim - CyberShake - GM (Callaghan et al., 2018). The standard empirical PSHA pathway is shown in black.
#3D EARTHQUAKE SIMULATOR SIMULATOR#
Pathways involving the earthquake rupture simulator RSQSim are marked in red, and those involving the ground-motion simulator CyberShake are marked in blue. 18-37-00127.Figure 1: CISM computational pathways for Probabilistic Seismic Hazard Analysis (PSHA). The reported study was funded by RFBR according to the research project No. Keywords: mathematical simulation, numerical method, grid-characteristic method, seismic waves, earthquake, seismic resistance. The numerical approach described can be extended to more complex physical models of geological media. And discrepancies may be explained by differences in numerical methods used. The adequate coincidence of the simulation results is obtained. All of their parameters are set based on previously published scientific articles. Two different models are used: the homogeneous half-space and the multilayered geological massif with the day surface. In this paper, seismic waves emitted during the earthquake initiation process are numerically simulated. In this case, any heterogeneities, such as geological layers with curvilinear boundaries, gas and fluid-filled cracks, fault planes, etc., may be explicitly taken into account. The widely used geological hypocenter model, called the “double-couple” model, was incorporated into this numerical algorithm.
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To describe physical processes, we use a system of partial differential equations for a linearly elastic body of the second order, which is solved numerically by a grid-characteristic method on parallelepiped meshes. We describe a method for simulating seismic wave propagation from the hypocenter to the day surface. The present work is devoted to the study of spatial dynamic processes occurring in geological medium during an earthquake. That is why the development of new numerical methods for seismic stability problems is a high priority nowadays.
#3D EARTHQUAKE SIMULATOR FREE#
Unfortunately, the quality of simulations is not enough due to the difficulty of setting the correct free boundary condition. The other method is a detailed simulation of dynamic processes using the finite-element method. The obvious drawback of this approach is a low precision due to the model over simplification.
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One of the most common approaches is the natural frequency method. Much effort has been made to develop precise and robust methods for the estimation of the seismic stability of buildings. It leads to a large number of human deaths. One of the destroying natural processes is the initiation of the regional seismic activity. Moscow Institute of Physics and Technology,ġ41700, Russia, Moscow Region, Dolgoprudny city, Institutskij lane, b.
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R. A. Bagaev, V. I. Golubev, Yu. A. Golubeva Computer Research and Modeling, 2019, Volume 11, Issue 6, Pages 1061–1067 (Mi crm761)įull-wave 3D earthquake simulation using the double-couple model and the grid-characteristic method