|
| | Abstract | | The multilateral approach beyond the conventional CMP stack is applied to the multi-scale seismic data for the extraction of reflection patterns related to subducting Philippine sea plate. In order to build the detailed geophysical model of subducting Philippine Sea plate, we developed a processing workflow based on the hybrid profiling of wide-angle reflection, refraction and passive seismic data including back-scattered teleseismic wave and local-earthquake sequences.Through the strategic seismic data acquisition and processing for several reflection suvey around Tokyo metropolitan region, the geometry constraints for subduction megathrust and the connectivity of the spray faults were identified. Further, steady-creep and seismogenic asperities zone related the slip deficit on the plate interface were characterized by the distribution of reflection intensities for relative-amplitude preserved common-image ensembles. |
|
|
|
| |
|