Preliminary Results: Determination of Microseismic Event Locations on Anisotropic Medium Using Time Reverse Modeling

Abstract

Determining the microseismic event location is crucial in various fields of science such as hazard mitigation, exploration of new fossil energy sources, and others. However, in determining the source location, several problems arise, namely the determination of the source location that is not appropriate due to limited data. To determine the exact location of the event requires a lot of microseismic recording data. We developed a time reverse modeling method for elastic waves. The data used is synthetic data that is generated from forward modeling which seems to originate a source that is located in subsurface at 1,300 m depth. The seismic velocity model used is a layered seismic velocity model with the assumption that every layers is unabsorbed layers. Data from the wavefield recording on the surface is propagated back to the source. From the study, this was found that the microseismic event was at a depth of 1,300 m.