|
| | Abstract | | Long offset VSP surveys were carried out in Kumanonada Nankai trough during the IODP expedition 319 cruise by JAMSTEC D/V Chikyu and R/V Kairei. The purpose of this VSP surveys are to illuminate deep plate boundary and mega-spray faults with high resolution imaging, and to build Vp and Vs model in this area. The seismic data were successfully acquired with the 53.4km walkaway VSP and the circular VSP with 5km radius with 16 three-component wireline borehole seismic tools in the cased hole. Zero offset VSP were carried out as well. Preliminary P-P reflection image shows high resolution reflections from splay faults. |
|
|
|
| |
|