| 講演要旨(和文) | | 本稿では，秋田・岩手・宮城の3県をまたぐ栗駒火山に焦点を当てる．栗駒火山は重要な活火山の1つであり，1744年と1944年に噴火活動が生じた．1944年の水蒸気噴火の現場は昭和湖と呼ばれる噴火口の湖として残っている．昭和湖の他に，地獄谷の上流に火山ガスが現れている．本研究では，AMTの地磁気と地電流の時系列を収集し，フェイズテンソル解析や二次元構造解析を使用し，一次データおよび初期解析の特性を報告する． |
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| | 講演要旨(英文) | | Now we focus the Kurikoma volcano closely at the triple junction of borders of Akita, Iwate and Miyagi prefectures, northeast of Japan. Kurikoma volcano is one of important active volcanos and its most recent striking activity was phreatic eruption in 1944. The site of 1944 eruption is now remained as a crater lake called Lake Showa. Besides the Lake Showa, upstream of a gorge called Jigoku-dani and volcanic gas is even now emitted there. We installed several AMT sites on the volcanic body of Kurikoma volcano and one of sites is alongside Lake Showa and Jigoku-dani. We just collected the time series of geomagnetic and telluric date of AMT and report the characteristics of primary data and initial analyses using phase tensor and two-dimensional structure analysis. |
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