Migration of Very Long Period Seismicity at Aso Volcano, Japan, Associated With the 2016 Kumamoto Earthquake

Andri Hendriyana, Takeshi Tsuji

研究成果: Contribution to journalArticle査読

5 被引用数 (Scopus)

抄録

Earthquakes are known to precede volcanic activity, including long-period or very long period (VLP) volcanic seismicity. However, the relationships among earthquakes, VLP seismicity, and volcanic eruptions are not well understood. Here we present the locations of VLP seismicity at Aso volcano, Japan, between January 2015 and December 2016, a period that includes the Mw 7.0 Kumamoto earthquake and phreatomagmatic eruptions. By using a differential-time backprojection method developed in this study to accurately locate VLP events, we clearly identified two distinct VLP clusters. Whereas the eastern cluster was active during eruptions, the western cluster displayed intense VLP seismicity only for a few months after the earthquake. The western cluster may be associated with opening of new fractures during the earthquake. This study explores the mechanisms that can relate earthquake to volcanic activities and provides a new approach to analyze the dynamic behaviors inside volcanoes that may yield useful information for hazard evaluation.

本文言語英語
ページ(範囲)8763-8771
ページ数9
ジャーナルGeophysical Research Letters
46
15
DOI
出版ステータス出版済み - 8 16 2019

All Science Journal Classification (ASJC) codes

  • 地球物理学
  • 地球惑星科学(全般)

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