Episodic transport of discrete magma batches beneath Aso volcano.
Episodic transport of discrete magma batches beneath Aso volcano.
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DOI:
10.1038/s41467-021-25883-y
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发表时间:
2021-09-21
影响因子:
16.6
通讯作者:
Song TA
中科院分区:
文献类型:
--
作者:
Niu J;Song TA
Magma ascent, storage, and discharge in the trans-crustal magmatic system are keys to long-term volcanic output and short-term eruption dynamics. How a distinct magma batch transports from a deep reservoir(s) to a pre-eruptive storage pool with eruptible magma remains elusive. Here we show that repetitive very-long-period signals (VLPs) beneath the Aso volcano are preceded by a short-lived (~50–100 s), synchronous deformation event ~3 km apart from the VLP source. Source mechanism of a major volumetric component (~50–440 m3 per event) and a minor low-angle normal-fault component, together with petrological evidence, suggests episodic transport of discrete magma batches from an over-pressured chamber roof to a pre-eruptive storage pool near the brittle-ductile transition regime. Magma ascent velocity, decompression rate, and cumulative magma output deduced from recurrent deformation events before recent 2014 and 2016 eruptions reconcile retrospective observations of the eruption style, tephra fallouts, and plume heights, promising real-time evaluation of upcoming eruptions. Repetitive shallow resonances provide a pathway to unravelling episodic magma transport deep in the magma plumbing system. Episodic deformation of ~1 nanoradian over ~100 s beneath Aso volcano potentially provides a link between long-term volcanic output and short-term eruption dynamics.
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DOI:
10.1007/978-3-540-49302-0_5
发表时间:
2006-01-01
期刊:
VOLCANO DEFORMATION
影响因子:
--
作者:
Dzurisin, Daniel;Lu, Zhong
通讯作者:
Lu, Zhong
影响因子:
3
作者:
Ishii, Kensuke
通讯作者:
Ishii, Kensuke
影响因子:
16.6
作者:
Cassidy M;Manga M;Cashman K;Bachmann O
通讯作者:
Bachmann O
影响因子:
3
作者:
Cigolini, Corrado;Coppola, Diego;Laiolo, Marco
通讯作者:
Laiolo, Marco
DOI:
10.1016/j.jvolgeores.2004.12.005
发表时间:
2005-05-30
影响因子:
2.9
作者:
Hase, H;Hashimoto, T;Tanaka, Y
通讯作者:
Tanaka, Y