Santorini Volcano and its Plumbing System
Santorini Volcano and its Plumbing System
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DOI：
10.2138/gselements.15.3.177
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发表时间：
2019-06-01
期刊：
影响因子：
4.5
通讯作者：
Mather, Tamsin A.
中科院分区：
文献类型：
--
作者：
Druitt, Timothy H.;Pyle, David M.;Mather, Tamsin A.
圣托里尼火山是研究弧火山作用的一个杰出的天然实验室，在过去的35万年里，它发生了12次普林尼式喷发，其中至少有4次导致了火山口坍塌。普林尼期喷发的特征是火山口内的建筑和较低强度的爆炸活动。普林尼火山喷发是由4-8公里深处的岩浆库提供的，这些岩浆库是火山爆发前几个世纪由来自火山口下储层深处的高通量岩浆脉冲聚集而成的。2011年至2012年的动荡涉及两个岩浆脉冲在大约4公里深处的侵入，这表明现代火山的行为与普林尼火山爆发之前的火山行为相似。对圣托里尼岛管道系统的了解将有助于更好地减轻这座高度危险的火山的风险。
Santorini Volcano is an outstanding natural laboratory for studying arc volcanism, having had twelve Plinian eruptions over the last 350,000 years, at least four of which caused caldera collapse. Periods between Plinian eruptions are characterized by intra-caldera edifice construction and lower intensity explosive activity. The Plinian eruptions are fed from magma reservoirs at 4-8 km depth that are assembled over several centuries prior to eruption by the arrival of high-flux magma pulses from deeper in the sub-caldera reservoir. Unrest in 2011-2012 involved intrusion of two magma pulses at about 4 km depth, suggesting that the behaviour of the modern-day volcano is similar to the behaviour of the volcano prior to Plinian eruptions. Emerging understanding of Santorini's plumbing system will enable better risk mitigation at this highly hazardous volcano.