| DOI: | 10.1002/2015GL064869
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| 论文题名: | Linking magma transport structures at Ki¯lauea volcano |
| 作者: | Wech A.G.; Thelen W.A.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9402
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| EISSN: | 1944-9133
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| 出版年: | 2015
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| 卷: | 42, 期:17 | | 起始页码: | 7090
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| 结束页码: | 7097
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| 语种: | 英语
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| 英文关键词: | Ki¯lauea
; long period
; magma
; seismology
; tremor
; volcano
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| Scopus关键词: | Geophysics
; Plumbing
; Seismology
; Volcanoes
; Cross correlations
; Event identification
; Kilauea
; Long period
; Long-period events
; Magma
; Seismic phenomena
; Tremor
; Earthquakes
; fault zone
; magma
; seismicity
; seismology
; volcanic earthquake
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| 英文摘要: | Identifying magma pathways is important for understanding and interpreting volcanic signals. At Ki¯lauea volcano, seismicity illuminates subsurface plumbing, but the broad spectrum of seismic phenomena hampers event identification. Discrete, long-period (LP) events dominate the shallow (5-10 km) plumbing, and deep (40+ km) tremor has been observed offshore. However, our inability to routinely identify these events limits their utility in tracking ascending magma. Using envelope cross-correlation, we systematically catalog non-earthquake seismicity between 2008 and 2014. We find that the LPs and deep tremor are spatially distinct, separated by the 15-25 km deep, horizontal mantle fault zone (MFZ). Our search corroborates previous observations, but we find broader band (0.5-20 Hz) tremor comprising collocated earthquakes and reinterpret the deep tremor as earthquake swarms in a volume surrounding and responding to magma intruding from the mantle plume beneath the MFZ. We propose that the overlying MFZ promotes lateral magma transport, linking this deep intrusion with Ki¯lauea's shallow magma plumbing. © Published 2015. This article is a U.S. Government work and is in the public domain in the USA. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84943365119&doi=10.1002%2f2015GL064869&partnerID=40&md5=2065c5ec236dbaa72c5ec5b1a96843a0
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/9017
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| 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: | Alaska Volcano Observatory, U.S. Geological Survey, Anchorage, AK, United States
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| Recommended Citation: | |
Wech A.G.,Thelen W.A.. Linking magma transport structures at Ki¯lauea volcano[J]. Geophysical Research Letters,2015-01-01,42(17).
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