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  1. 防災科研関係論文

Correlation between magma chamber deflation and eruption cloud height during the 2011 Shinmoe-dake eruptions

https://nied-repo.bosai.go.jp/records/5041
https://nied-repo.bosai.go.jp/records/5041
0262a82b-9fb1-4147-8fb4-2b64cc0431c2
Item type researchmap(1)
公開日 2023-04-27
タイトル
言語 ja
タイトル Correlation between magma chamber deflation and eruption cloud height during the 2011 Shinmoe-dake eruptions
タイトル
言語 en
タイトル Correlation between magma chamber deflation and eruption cloud height during the 2011 Shinmoe-dake eruptions
言語
言語 eng
著者 T. Kozono

× T. Kozono

ja T. Kozono

en T. Kozono

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H. Ueda

× H. Ueda

ja H. Ueda

en H. Ueda

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T. Shimbori

× T. Shimbori

ja T. Shimbori

en T. Shimbori

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K. Fukui

× K. Fukui

ja K. Fukui

en K. Fukui

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抄録
内容記述タイプ Other
内容記述 Multiple observations of subsurface and surface phenomena during volcanic eruptions provide important information about eruption styles, eruption column dynamics, and magma plumbing systems. During the 2011 eruptions of Kirishima-Shinmoe-dake volcano in Japan, borehole-type tiltmeter data and weather radar data captured the subsurface and surface phenomena, respectively; the tiltmeters detected deflation of a magma chamber caused by migration of magma to the surface, and the weather radar detected changes in the height of the eruption cloud echo. In this study, we present a method based on the correlation between magma chamber deflation and cloud echo height to identify eruption styles. The method can detect whether a column-forming eruption is accompanied by magma migration from the magma chamber (e.g., sub-Plinian eruption), or not (e.g., Vulcanian explosion). By using well-correlated chamber deflation and echo height data, we found that eruption column dynamics during the Shinmoe-dake eruptions are well described by a one-quarter power scaling relationship between cloud height and magma discharge rate, and that a clear correlation between geodetic volume change of the magma chamber and the erupted volume indicates a stable magma plumbing system connecting the magma chamber and the surface.
言語 en
書誌情報 en : Earth, Planets and Space

巻 66, p. 139, 発行日 2014-10
出版者
言語 en
出版者 SPRINGER HEIDELBERG
ISSN
収録物識別子タイプ ISSN
収録物識別子 1880-5981
DOI
関連識別子 10.1186/s40623-014-0139-1
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