气候变化领域集成服务门户(CCPortal): A 25-Year History of Volcano Magma Supply in the East Central Aleutian Arc; Alaska

CCPortal

DOI	10.1029/2020GL088388
	A 25-Year History of Volcano Magma Supply in the East Central Aleutian Arc; Alaska
	Xue X.; Freymueller J.T.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:15
英文摘要	Using ~25 years of GPS and InSAR observations and the time-dependent inversion filter, we invert for the volume change history of three active volcanoes in the east central Alaska Aleutian arc and the secular velocity of the region. The inferred time-dependent volume change shows (1) two exponentially decaying pulses followed by a nearly linear inflation period at Westdahl volcano, (2) multiple episodic inflation events at Akutan volcano, and (3) transient volcanic inflation and long-term deflation signals at Makushin volcano. Comparing our regional velocity estimates with recently published block models, we find a small signal that can be explained by slip deficit on the megathrust, either from a shallow (<20 km depth) almost fully locked zone or a weakly locked zone confined to 25–50 km depth. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Locks (on waterways); Active volcanoes; Aleutian Arc; Block models; Megathrust; Time dependent; Volcanic inflation; Volume change; Volcanoes; GPS; magma; synthetic aperture radar; volcano; volume change; Alaska; Aleutian Arc; Pacific Ocean
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170028
作者单位	Department of Earth and Environmental Sciences, Michigan State University, East Lansing, MI, United States
推荐引用方式 GB/T 7714	Xue X.,Freymueller J.T.. A 25-Year History of Volcano Magma Supply in the East Central Aleutian Arc; Alaska[J],2020,47(15).
APA	Xue X.,&Freymueller J.T..(2020).A 25-Year History of Volcano Magma Supply in the East Central Aleutian Arc; Alaska.Geophysical Research Letters,47(15).
MLA	Xue X.,et al."A 25-Year History of Volcano Magma Supply in the East Central Aleutian Arc; Alaska".Geophysical Research Letters 47.15(2020).