|
| | Abstract | | It is important to detect and delineate active fault structures in detail for the purpose of earthquake disaster countermeasures. In previous research, the Kitakami lowland west fault zone is known as an active thrust zone whose length and width are estimated at 62km and 20-30km respectively. The numerical research shows that the magnitude of an earthquake caused by this fault zone will be 7.8 (MJ). We implemented a seismic reflection survey at the southern part (the Tengumori-Dedana fault group) of this fault zone by using an EnviroVibe seismic source to delineate deep underground structures in detail. In this survey, we succeeded in delineating fault structures and evaluating the fault zone. In this paper, we will not only introduce our results, but also show the role of the geophysical technique in earthquake disaster countermeasures. |
|
|
|
| |
|