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Title
  • en Significance of Electromagnetic Surveys at Active Volcanoes : Toward Evaluating the Imminence of Wet Eruptions
Creator
    • en Kanda, Wataru
    • en Morita, Yuichi
    • en Hayakawa, Midori
    • en Tanaka, Ryo
    • en Uyeshima, Makoto
Accessrights open access
Subject
  • Other en Kuttara volcano
  • Other en magnetotellurics
  • Other en wet eruptions
  • Other en unrest phenomena
  • NDC 453
Description
  • Abstract en 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.
Publisher en Fuji Technology Press
Date
    Issued2019-06-01
Language
  • eng
Resource Type journal article
Version Type AM
Identifier HDL http://hdl.handle.net/2115/74568
Relation
  • isVersionOf DOI https://doi.org/10.20965/jdr.2019.p0580
Journal
    • PISSN 1881-2473
    • EISSN 1883-8030
      • en Journal of Disaster Research
      • Volume Number14 Issue Number4 Page Start580 Page End591
File
Oaidate 2023-11-25