トップイメージ 2015-1st-03 | 公益社団法人 日本地すべり学会

トップイメージ 2015-1st-03

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トップイメージ 2015-1st-03

Title landslide at Mt. Ontake
Photographer Mitsuru Osawa
Organization name Kyoto University
Location Mt. Ontake in Nagano Pref.
Date September 9, 2014
Explanation  A massive landslide with a volume of 34 million m3 was triggered by the 1984 Naganoken–Seibu earthquake (M6.8). Vegetation still cannot grow on the affected area because of the extensive surface erosion. I took this photo one week before the phreatic explosion of Mount Ontake on September 27, 2014 that caused a tragic disaster. This one week is very momentary in the time-scale unit of volcanic activities. I express my condolences for those who lost their lives during the explosion.