DOI: 10.1002/2015GL067264
论文题名: Depressurization of a hydrothermal system following the August and November 2012 Te Maari eruptions of Tongariro, New Zealand
作者: Hamling I.J. ; Williams C.A. ; Hreinsdõttir S.
刊名: Geophysical Research Letters
ISSN: 0094-9524
EISSN: 1944-9255
出版年: 2016
卷: 43, 期: 1 起始页码: 168
结束页码: 175
语种: 英语
英文关键词: depressurization
; hydrothermal
; InSAR
; New Zealand
; TVZ
Scopus关键词: Space-based radar
; Subsidence
; Depressurizations
; Hydrothermal
; InSAR
; New zealand
; TVZ
; Synthetic aperture radar
; deformation mechanism
; fracture
; hydrothermal system
; interferometry
; phreatic zone
; satellite data
; spatiotemporal analysis
; subsidence
; synthetic aperture radar
; volcanic eruption
; Manawatu-Wanganui
; Mount Tongariro
; New Zealand
; North Island
英文摘要: In 2012, two phreatic eruptions occurred at New Zealand's Tongariro volcano for the first time in over a century. Interferometric Synthetic Aperture Radar data collected by the Italian Space Agency's COSMO-SkyMed satellite constellation, indicates up to 20 mm/yr of post eruptive subsidence focused across a 4 km2 region in the vicinity of the eruption site. Modeling of the deformation data indicates a shallow source at ∼500 m depth (1100 m asl) consistent with the depth of the hydrothermal system. We estimate an annual volume loss of 35,000 m3, leading to a pressure loss of ∼0.09 MPa/yr. We suggest that fracturing associated with the eruptions has enabled the continued depressurization of the shallow hydrothermal system and that subsidence will continue until the fractures become resealed. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84957727641&doi=10.1002%2f2015GL067264&partnerID=40&md5=9befa53aab6f524f930d50c34f9b2534
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10487
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: GNS Science, Lower Hutt, New Zealand
Recommended Citation:
Hamling I.J.,Williams C.A.,Hreinsdõttir S.. Depressurization of a hydrothermal system following the August and November 2012 Te Maari eruptions of Tongariro, New Zealand[J]. Geophysical Research Letters,2016-01-01,43(1).