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Significance of Electromagnetic Surveys at Active Volcanoes : Toward Evaluating the Imminence of Wet Eruptions
| Title: | Significance of Electromagnetic Surveys at Active Volcanoes : Toward Evaluating the Imminence of Wet Eruptions |
| Authors: | Hashimoto, Takeshi Browse this author →KAKEN DB | | Kanda, Wataru Browse this author | | Morita, Yuichi Browse this author | | Hayakawa, Midori Browse this author | | Tanaka, Ryo Browse this author | | Aoyama, Hiroshi Browse this author →KAKEN DB | | Uyeshima, Makoto Browse this author |
| Keywords: | Kuttara volcano | | magnetotellurics | | wet eruptions | | unrest phenomena |
| Issue Date: | 1-Jun-2019 |
| Publisher: | Fuji Technology Press |
| Journal Title: | Journal of Disaster Research |
| Volume: | 14 |
| Issue: | 4 |
| Start Page: | 580 |
| End Page: | 591 |
| Publisher DOI: | 10.20965/jdr.2019.p0580 |
| Abstract: | The detection capability of various anomalous phenomena preceding volcanic eruptions has considerably progressed as the geophysical monitoring networks have become denser and multi-disciplinary. However, current eruption forecasting techniques, from a practical perspective, still have much scope for improvement because they largely depend on empirical techniques. In the past decade, three-dimensional modeling based on the electromagnetic sounding methods such as magnetotellurics (MT) have become a practical choice, and its recent applications to active volcanic fields has revealed certain common features among volcanoes. Information about the resistivity structure, especially in ‘wet’ volcanic fields, is useful for the provisional screening of the eruption potential from the viewpoint of the subsurface structure, and, thus, may contribute to the evaluation of eruption imminence in a broad sense. In this study, for evaluation purposes, we present the roles and possible further applications of the subsurface resistivity structure studies by demonstrating the preliminary results and interpretations of an MT survey that we performed in the Kuttara Volcanic Group, northern Japan. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/74568 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 橋本 武志
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