globalchange  > 气候减缓与适应
DOI: 10.1002/grl.50258
论文题名:
Near real-time monitoring of volcanic surface deformation from GPS measurements at Long Valley Caldera, California
作者: Ji K.H.; Herring T.A.; Llenos A.L.
刊名: Geophysical Research Letters
ISSN: 0094-9226
EISSN: 1944-8957
出版年: 2013
卷: 40, 期:6
起始页码: 1054
结束页码: 1058
语种: 英语
英文关键词: GPS ; Long Valley Caldera ; volcano monitoring
Scopus关键词: Continuous monitoring ; Deformation history ; Long valley caldera ; Projection Operator ; Real time monitoring ; Real-time monitoring systems ; Surface deformation ; Volcano monitoring ; Global positioning system ; Monitoring ; Time series ; Volcanoes ; Deformation ; data set ; deformation mechanism ; GPS ; monitoring ; volcanic soil ; California ; Long Valley Caldera ; United States
英文摘要: Long Valley Caldera in eastern California is an active volcanic area and has shown continued unrest in the last three decades. We have monitored surface deformation from Global Positioning System (GPS) data by using a projection method that we call Targeted Projection Operator (TPO). TPO projects residual time series with secular rates and periodic terms removed onto a predefined spatial pattern. We used the 2009-2010 slow deflation as a target spatial pattern. The resulting TPO time series shows a detailed deformation history including the 2007-2009 inflation, the 2009-2010 deflation, and a recent inflation that started in late-2011 and is continuing at the present time (November 2012). The recent inflation event is about four times faster than the previous 2007-2009 event. A Mogi source of the recent event is located beneath the resurgent dome at about 6.6 km depth at a rate of 0.009 km3/yr volume change. TPO is simple and fast and can provide a near real-time continuous monitoring tool without directly looking at all the data from many GPS sites in this potentially eruptive volcanic system. Key Points We have developed a near real-time monitoring system for volcano deformation Our method provides high-resolution temporal history of surface deformation The Long Valley Caldera has been inflating since late-2011. ©2013 American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84876909516&doi=10.1002%2fgrl.50258&partnerID=40&md5=4f076610754ce543f52d8f761fceb58c
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6490
Appears in Collections:气候减缓与适应

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作者单位: Department of Earth Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, United States

Recommended Citation:
Ji K.H.,Herring T.A.,Llenos A.L.. Near real-time monitoring of volcanic surface deformation from GPS measurements at Long Valley Caldera, California[J]. Geophysical Research Letters,2013-01-01,40(6).
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