A Study for developing the technique of extracting indistinct seismogenic faults

Takada, Keita*

We discuss developing the technique of extracting indistinct seismogenic faults such as a case of partly existing displacement on the ground surface and indistinct active faults. We maped active faults and possible active faults that have possibility to induce earthquakes by aerial photograph interpretation around the Chugoku district, southwestern Japan and Chubu district, central Japan. Then we make a field survey around epicentral area of the 2000 Tottori-ken Seibu earthquake. The result of the field survey shows characteristics of lineaments that faulted during 2000 earthquake. We compared results of interpretation with several datas, for example seismicity, geology, gravity, GPS, and summarize notable point for extracting indistinct seismogenic faults.