globalchange  > 科学计划与规划
DOI: 10.1002/2015GL064338
论文题名:
Renewed inflation of Long Valley Caldera, California (2011 to 2014)
作者: Montgomery-Brown E.K.; Wicks C.W.; Cervelli P.F.; Langbein J.O.; Svarc J.L.; Shelly D.R.; Hill D.P.; Lisowski M.
刊名: Geophysical Research Letters
ISSN: 0094-9450
EISSN: 1944-9181
出版年: 2015
卷: 42, 期:13
起始页码: 5250
结束页码: 5257
语种: 英语
英文关键词: caldera deformation ; geodesy ; GPS ; InSAR ; Long Valley
Scopus关键词: Deformation ; Domes ; Geodesy ; Geodetic satellites ; Global positioning system ; Current data ; Extension rates ; InSAR ; Long Valley ; Long valley caldera ; Magma reservoirs ; Persistent scatterers ; Volume change ; Landforms ; caldera ; geodesy ; GPS ; magma ; satellite data ; scattering ; seismicity ; spatiotemporal analysis ; synthetic aperture radar ; Terra (satellite) ; uplift ; California ; Long Valley ; United States
英文摘要: Slow inflation began at Long Valley Caldera in late 2011, coinciding with renewed swarm seismicity. Ongoing deformation is concentrated within the caldera. We analyze this deformation using a combination of GPS and InSAR (TerraSAR-X) data processed with a persistent scatterer technique. The extension rate of the dome-crossing baseline during this episode (CA99 to KRAC) is 1cm/yr, similar to past inflation episodes (1990-1995 and 2002-2003), and about a tenth of the peak rate observed during the 1997 unrest. The current deformation is well modeled by the inflation of a prolate spheroidal magma reservoir â7km beneath the resurgent dome, with a volume change of â6×106m3/yr from 2011.7 through the end of 2014. The current data cannot resolve a second source, which was required to model the 1997 episode. This source appears to be in the same region as previous inflation episodes, suggesting a persistent reservoir. Key Points Uplift at Long Valley began in late 2011 Well modeled by inflation of â7km deep prolate ellipsoid Source colocated with previous sources, suggesting persistent reservoir. © 2015. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938207207&doi=10.1002%2f2015GL064338&partnerID=40&md5=8e9de23cd8cc657b512294544f0510f2
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9065
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: California Volcano Observatory, United States Geological Survey, Menlo Park, CA, United States

Recommended Citation:
Montgomery-Brown E.K.,Wicks C.W.,Cervelli P.F.,et al. Renewed inflation of Long Valley Caldera, California (2011 to 2014)[J]. Geophysical Research Letters,2015-01-01,42(13).
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