DOI: 10.1029/2012GL054340
论文题名: Systematic changes in the incoming plate structure at the Kuril trench
作者: Fujie G. ; Kodaira S. ; Yamashita M. ; Sato T. ; Takahashi T. ; Takahashi N.
刊名: Geophysical Research Letters
ISSN: 0094-9410
EISSN: 1944-9141
出版年: 2013
卷: 40, 期: 1 起始页码: 88
结束页码: 93
语种: 英语
Scopus关键词: Oceanic plate
; Plate bending
; Plate structure
; Seismic refraction
; Sensitive indicator
; Structural studies
; Subduction zones
; Systematic changes
; Lithology
; Seawater
; Seismology
; Solvents
; Plates (structural components)
; oceanic crust
; percolation
; plate tectonics
; seawater
; seismic reflection
; seismic refraction
; subduction zone
; trench
; water content
; Kuril Trench
; Pacific Ocean
英文摘要: Recent seismic structural studies in trench-outer rise regions have shown that Vp within the incoming oceanic plate systematically decreases toward the trench, probably owing to bending and fracturing of the plate. To understand the mechanisms acting to reduce Vp, Vs is critical because the Vp/Vs ratio is a sensitive indicator of lithology, porosity, and the presence of fluid. In the outer rise region of the Kuril trench, we conducted an extensive seismic refraction and reflection survey that revealed systematic changes in Vp, Vs, and Vp/Vs. Our results suggest that water content within the incoming oceanic plate increases toward the trench accompanied by the development of bending-related fractures at the top of the oceanic crust, consistent with the seawater percolation. Our results support the idea that plate bending and fracturing during the bending in the outer rise of the trench play an important role in the water cycle of subduction zones. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84874890372&doi=10.1029%2f2012GL054340&partnerID=40&md5=3a9884f55c417b7ecfdb19be93a1e0f0
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6674
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: IFREE, JAMSTEC, Showamachi, 3173-25, Kanazawa-ku, Yokohama, Kanagawa, Japan
Recommended Citation:
Fujie G.,Kodaira S.,Yamashita M.,et al. Systematic changes in the incoming plate structure at the Kuril trench[J]. Geophysical Research Letters,2013-01-01,40(1).