Geodetic evidence for interconnectivity between Aira and Kirishima magmatic systems, Japan.
Geodetic evidence for interconnectivity between Aira and Kirishima magmatic systems, Japan.
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DOI：
10.1038/s41598-018-28026-4
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发表时间：
2018-06-28
影响因子：
4.6
通讯作者：
Wdowinski S
中科院分区：
文献类型：
--
作者：
Brothelande E;Amelung F;Yunjun Z;Wdowinski S
目前尚不清楚地球表面聚集或排列的火山大厦是否与深部的岩浆系统相连。此前成对喷发的地质记录表明，火山的相互关联性仍然缺乏适当的大地测量证据。在这里，我们使用 GPS 时间序列和变形模型来展示鹿儿岛地堑（日本南部）的两个相邻火山中心姫良火山口和雾岛在 2011 年雾岛骚乱期间如何相互作用。虽然姫良火山口在二十年来一直稳定膨胀，但在雾岛喷发期间，它因大量熔岩喷出而收缩。这种紧缩不能用应力变化来解释，被解释为雾岛补给阶段岩浆从姶良系统撤出的结果。这项研究强调了大喷发前后相邻火山系统的行为，以及在喷发概率模型中考虑火山相互作用的重要性。
It is not known whether clustered or aligned volcanic edifices at the Earth surface have connected magmatic systems at depth. Previously suggested by geological records of paired eruptions, volcano interconnectivity still lacks proper geodetic evidence. Here we use GPS time-series and deformation modeling to show how Aira caldera and Kirishima, two adjacent volcanic centers in Kagoshima graben (southern Japan), interacted during Kirishima unrest in 2011. Whereas Aira caldera had been inflating steadily for two decades, it deflated during the eruption of Kirishima which started with a large-volume lava extrusion. This deflation, which cannot be explained by stress changes, is interpreted as the result of magma withdrawal from the Aira system during the Kirishima replenishment phase. This study highlights the behavior of connected neighboring volcanic systems before and after a large eruption, and the importance of taking into account volcano interactions in eruption probability models.
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影响因子：
3
作者：
Hotta, Kohei;Iguchi, Masato;Tameguri, Takeshi
通讯作者：
Tameguri, Takeshi
影响因子：
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作者：
Albino, F.;Sigmundsson, F.
通讯作者：
Sigmundsson, F.
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作者：
Jellinek, AM;Manga, M;Saar, MO
通讯作者：
Saar, MO
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作者：
Hickey, James;Gottsmann, Joachim;Iguchi, Masato
通讯作者：
Iguchi, Masato
影响因子：
64.8
作者：
Miklius, A;Cervelli, P
通讯作者：
Cervelli, P