Scientists Conduct Artificial Quake in Japanese Volcano to Predict Eruptions
TOKYO – Japanese scientists triggered an artificial earthquake in Mt. Zao, a volcano in northern Japan, to obtain data that could help improve prediction of volcanoes.Researchers from Tohoku University and the Japan Meteorological Agency detonated about 200 kilograms (441 pounds) of dynamite inside a 40-meter-deep (131 feet) hole dug on the mountain side, public broadcaster NHK reported.
The hole was earlier filled with water, which spewed out with the force of the blast, and the consequent seismic waves were measured by about 150 seismometers placed on the mountain.
Since seismic waves travel more slowly through water, the data from the seismometer could help estimate the presence of water pools under volcanoes up to about two kilometers (1.24 miles) underground, and help improve prediction of volcanic eruptions.
The eruptions occur when magma comes in contact with a surface containing water, which evaporates and causes an explosion in the volcano.
Tohoku University Professor Satoshi Miura said finding out the locations of hot water is a key to predicting where the next eruption could occur, according to NHK.
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