DOI: 10.1002/2016GL068383
论文题名: Uncovering the hidden signature of a magmatic recharge at Piton de la Fournaise volcano using small earthquakes
作者: Lengliné O. ; Duputel Z. ; Ferrazzini V.
刊名: Geophysical Research Letters
ISSN: 0094-9029
EISSN: 1944-8760
出版年: 2016
卷: 43, 期: 9 起始页码: 4255
结束页码: 4262
语种: 英语
英文关键词: Piton de la Fournaise
; template matching
; volcano seismicity
Scopus关键词: Earthquakes
; Geophysics
; Sea level
; Structural geology
; Volcanoes
; Hydraulic connection
; Piton de La Fournaise
; Piton de la Fournaise volcano
; Shallow earthquakes
; Shallow reservoirs
; Small earthquakes
; Template matching method
; Volcano-seismicity
; Template matching
英文摘要: We apply a template matching method to detect and locate preeruptive earthquakes at Piton de la Fournaise volcano in 2014 and 2015. This approach enabled the detection of many events and unveiled persistent seismicity features through multiple eruptions. Shallow earthquakes define a ring-shaped structure beneath the main crater. The repetitive occurrence of events along this structure suggests that it corresponds to a preexisting zone of weakness within the edifice. We also show evidence of deep magma transfer in 2015. More than 5000 deep earthquakes define an upward migration immediately followed by the occurrence of shallow events leading to an eruption 20 days later. This suggests the creation of a hydraulic connection between the lower part of the volcanic system and a magma reservoir located near sea level. We can envisage than such replenishments of the shallow reservoir occurred in the past but were undetected because of limited deep earthquake detections. © 2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84966359094&doi=10.1002%2f2016GL068383&partnerID=40&md5=56b0b252632274237fec318b8ce0f2fd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9992
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: IPGS-EOST, Université de Strasbourg/CNRS, Strasbourg, France
Recommended Citation:
Lengliné O.,Duputel Z.,Ferrazzini V.. Uncovering the hidden signature of a magmatic recharge at Piton de la Fournaise volcano using small earthquakes[J]. Geophysical Research Letters,2016-01-01,43(9).