Fast GPU-Based Based Seismogram Simulation From Microseismic Events in Marine Environments Using Heterogeneous Velocity Models
Abstract: A novel approach is presented for fast generation of synthetic seismograms due to microseismic events, using heterogeneous marine velocity models. The partial differential equations for the three three-dimensional (3-D) D) elastic wave equation have been numerically solved using the Fourier domain pseudo pseudo-spectral spectral method which is parallelizable on the graphi graphics cs processing unit (GPU) cards, thus making it faster compared to traditional CPU based computing platforms. Due to computationally expensive forward simulation of large geological models, several combinations of individual synthetic seismic traces are use used d for specified microseismic event locations, in order to simulate the effect of realistic microseismic activity patterns in the subsurface. We here explore the patterns generated by few hundreds of microseismic events with different source mechanisms using usin various combinations, both in event amplitudes and origin times, using the simulated pressure and three component particle velocity fields via 11-D, 2-D D and 3-D 3 seismic visualizations.