Thursday, July 7, 2016

Kumamoto earthquake and active fault

An earthquake of magnitude 6.5 (provisional value) to assume Kumamoto, Kumamoto district cause at about 21:26 on April 14, 2016 was generated, and biggest seismic intensity of 7 was observed.

Furthermore, greatest seismic intensity of 7 was observed by this earthquake to assume Kumamoto, Kumamoto district cause in the same way at about 1:25 on April 16 28 hours later. A big aftershock continues, and damage becomes still heavy.

By this earthquake, the topic about the active fault is taken up.

Do you know that there are a lot of active faults in Japan?

For example, there are big active faults in Gifu, Shizuoka, and Kanagawa, a small gap in Tokyo and Hiroshima and others.

The active fault is the dislocation which repeated crustal movement until the extremely near times and will say the dislocation which should be still active in future.

Because an earthquake is generated in the active fault repeatedly in the past, and it is thought that an earthquake will occur in future again, it is thought that the evaluation of the activity of the active fault helps the foresight of the earthquake to produce there as the seismic center.

Foretelling an earthquake should advance.