气候变化领域集成服务门户(CCPortal): Deep long-period earthquakes generated by second boiling beneath Mauna Kea volcano

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DOI	10.1126/science.aba4798
	Deep long-period earthquakes generated by second boiling beneath Mauna Kea volcano
	Wech A.G.; Thelen W.A.; Thomas A.M.
发表日期	2020
ISSN	0036-8075
起始页码	775
结束页码	779
卷号	368 期号:6492
英文摘要	Deep long-period earthquakes (DLPs) are an enigmatic type of volcanic seismicity that sometimes precedes eruptions but mostly occurs at quiescent volcanoes. These earthquakes are depleted in high-frequency content and typically occur near the base of the crust. We observed a near-periodic, long-lived sequence of more than one million DLPs in the past 19 years beneath the dormant postshield Mauna Kea volcano in Hawai‘i. We argue that this DLP sequence was caused by repeated pressurization of volatiles exsolved through crystallization of cooling magma stalled beneath the crust. This “second boiling” of magma is a well-known process but has not previously been linked to DLP activity. Our observations suggest that, rather than portending eruptions, global DLP activity may more commonly be indicative of stagnant, cooling magma. Copyright © 2020 The Authors.
英文关键词	crystallization; earthquake; magma; seismicity; volcanic eruption; article; cooling; crystallization; earthquake; volcano; Hawaii [(ISL) Hawaiian Islands]; Hawaii [United States]; Hawaiian Islands; Mauna Kea
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/245990
作者单位	U.S. Geological Survey, Alaska Volcano Observatory, Anchorage, AK, United States; U.S. Geological Survey, Cascades Volcano Observatory, Vancouver, WA, United States; Department of Earth Sciences, University of Oregon, Eugene, OR, United States
推荐引用方式 GB/T 7714	Wech A.G.,Thelen W.A.,Thomas A.M.. Deep long-period earthquakes generated by second boiling beneath Mauna Kea volcano[J],2020,368(6492).
APA	Wech A.G.,Thelen W.A.,&Thomas A.M..(2020).Deep long-period earthquakes generated by second boiling beneath Mauna Kea volcano.Science,368(6492).
MLA	Wech A.G.,et al."Deep long-period earthquakes generated by second boiling beneath Mauna Kea volcano".Science 368.6492(2020).