Scientists conduct artificial quake on Mt.Zao

posted on October 23, 2015

Researchers have triggered an artificial earthquake on a mountain in northern Japan in search of data to help find signs of possible volcanic eruptions.

Mount Zao, which is 1841-meters high, straddles Miyagi and Yamagata prefectures. It has become active since the massive earthquake in March 2011, with increased volcanic tremors.

A team from Tohoku University, together with Meteorological Agency officials, conducted a new survey of the volcano before dawn on Thursday.

They detonated about 200 kilograms of dynamite inside a 40-meter-deep hole dug on the mountain side. Water poured inside the hole spewed out with the force of the blast.

Seismic waves from the blast were measured by about 150 seismometers placed on the mountain.

source by NHK world
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