DOI: 10.1002/2016GL069820
论文题名: The 2015 Wolf volcano (Galápagos) eruption studied using Sentinel-1 and ALOS-2 data
作者: Xu W. ; Jónsson S. ; Ruch J. ; Aoki Y.
刊名: Geophysical Research Letters
ISSN: 0094-8644
EISSN: 1944-8375
出版年: 2016
卷: 43, 期: 18 起始页码: 9573
结束页码: 9580
语种: 英语
英文关键词: Galápagos Islands
; InSAR
; sill
; volcanic eruption
Scopus关键词: Sea level
; Subsidence
; Volcanoes
; Geodetic observation
; InSAR
; Interferometric synthetic aperture radars
; Magmatic plumbing system
; Sill
; Surface deformation
; Surface displacement
; Volcanic eruptions
; Synthetic aperture radar
英文摘要: An energetic eruption started on 25 May 2015 from a circumferential fissure at the summit of Wolf volcano on Isabela Island, western Galápagos. Further eruptive activity within the Wolf caldera followed in mid-June 2015. As no geodetic observations of earlier eruptions at Wolf exist, this eruption provides an opportunity to study the volcano's magmatic plumbing system for the first time. Here we use interferometric synthetic aperture radar (InSAR) data from both the Sentinel-1A and ALOS-2 satellites to map and analyze the surface deformation at four time periods during the activity. These data allow us to identify the two eruption phases and reveal strong coeruptive subsidence within the Wolf caldera that is superimposed on a larger volcano-wide subsidence signal. Modeling of the surface displacements shows that two shallow magma reservoirs located under Wolf at ~1 km and ~5 km below sea level explain the subsidence and that these reservoirs appear to be hydraulically connected. We also suggest that the transition from the circumferential to the intracaldera eruption may have involved ring fault activity. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84989352661&doi=10.1002%2f2016GL069820&partnerID=40&md5=87e75090697696a7c46c7002e615126f
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9607
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: Physical Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
Recommended Citation:
Xu W.,Jónsson S.,Ruch J.,et al. The 2015 Wolf volcano (Galápagos) eruption studied using Sentinel-1 and ALOS-2 data[J]. Geophysical Research Letters,2016-01-01,43(18).