DOI: 10.1002/2016GL071884
论文题名: New insights into magma plumbing along rift systems from detailed observations of eruptive behavior at Axial volcano
作者: Sigmundsson F.
刊名: Geophysical Research Letters
ISSN: 0094-8280
EISSN: 1944-8011
出版年: 2016
卷: 43, 期: 24 起始页码: 12423
结束页码: 12427
语种: 英语
英文关键词: Axial
; eruption
; magma
; plumbing
; rifting
; volcano
Scopus关键词: Geophysics
; Plumbing
; Seismic waves
; Seismology
; Submarine geology
; Tectonics
; Axial
; Eruption
; High resolution seismic
; Magma
; Ocean observatories initiatives
; Rifting
; Seismic reflections
; Spatial heterogeneity
; Volcanoes
英文摘要: The magma reservoir in geophysical volcano plumbing models is often modeled as a simple geometric volume, filled with magma of uniform properties. However, the constraints on reservoir size and magma properties in volcano roots are typically indirect and poor. Axial Seamount, a volcano at a depth of about 1500 m on the Juan de Fuca mid-oceanic ridge in the Pacific Ocean, has both high-resolution seismic images of its subsurface magma and detailed results from monitoring of its most recent eruption and associated seismicity and ground deformation. The 2015 eruption at Axial Seamount is the best monitored submarine eruption so far because of observations made possible by the Ocean Observatories Initiative, and seismic imaging of magma at this volcano is better than in most other environments because of advanced analysis of extensive seismic reflection profiling at sea and the relatively simple volcano structure. This allows new understanding compared to findings from earlier observations from monitored rifting episodes on land. Geophysical magma plumbing models, in general, may need to allow for more complexities, namely, spatial heterogeneities in magma composition, melt content, and location of major volume changes within a single magma dominated crustal volume during eruptions. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85007327706&doi=10.1002%2f2016GL071884&partnerID=40&md5=81e036f0c5ea6afc1daf63e3bd015f23
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9243
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: Nordic Volcanological Center, Institute of Earth Sciences, University of Iceland, Reykjavik, Iceland
Recommended Citation:
Sigmundsson F.. New insights into magma plumbing along rift systems from detailed observations of eruptive behavior at Axial volcano[J]. Geophysical Research Letters,2016-01-01,43(24).