| DOI: | 10.1002/2015GL063084
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| 论文题名: | Slab-derived fluids, fore-arc hydration, and sub-arc magmatism beneath Kyushu, Japan |
| 作者: | Saita H.; Nakajima J.; Shiina T.; Kimura J.-I.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8855
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| EISSN: | 1944-8586
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| 出版年: | 2015
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| 卷: | 42, 期:6 | | 起始页码: | 1685
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| 结束页码: | 1693
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| 语种: | 英语
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| 英文关键词: | intermediate-depth earthquakes
; seismic attenuation
; serpentine
; upwelling flow
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| Scopus关键词: | Earthquakes
; Hydration
; Seismic waves
; Serpentine
; Silicate minerals
; Tectonics
; Back-arc extensions
; Different mechanisms
; Intermediate-depth earthquakes
; Seismic attenuation
; Serpentinized peridotites
; Tectonic process
; Threedimensional (3-d)
; Upwelling flow
; Volcanoes
; forearc basin
; hydration
; magmatism
; peridotite
; tectonics
; wave attenuation
; waveform analysis
; Japan
; Japan
; Kyushu
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| 英文摘要: | We estimate the three-dimensional (3-D) P wave attenuation structure beneath Kyushu, Japan, using a large number of high-quality waveform data. Our results show that the mantle wedge is characterized by high-attenuation regions in the fore-arc corner and in the back-arc beneath volcanoes, with the two regions separated by a low-attenuation area. The volcanic gap in central Kyushu is underlain by low attenuation below the Moho. High attenuation in the fore arc is probably associated with serpentinized peridotite, while that in the back arc is interpreted as an upwelling flow that is the source of arc magmas. The presence of low-attenuation mantle that separates the high-attenuation hydrated, fore-arc, and back-arc mantle regions suggests that fluids are supplied from two depth levels of the slab by different mechanisms. Low attenuation beneath the volcanic gap probably results from intricate 3-D mantle flow that is caused by tectonic processes such as back-arc extension and ridge collision. Key Points The first study on P wave attenuation structure beneath Kyushu Characteristic attenuation structures associated with slab-derived fluids A volcanic gap controlled by the absence of a concentrated upwelling flow ©2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84927799578&doi=10.1002%2f2015GL063084&partnerID=40&md5=0210dd529585de12645af217ec4b1fa0
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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/8471
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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: | Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University, Sendai, Japan
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| Recommended Citation: | |
Saita H.,Nakajima J.,Shiina T.,et al. Slab-derived fluids, fore-arc hydration, and sub-arc magmatism beneath Kyushu, Japan[J]. Geophysical Research Letters,2015-01-01,42(6).
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