DOI: 10.1002/2015GL067097
论文题名: Seismological detection of low-velocity anomalies surrounding the mantle transition zone in Japan subduction zone
作者: Liu Z. ; Park J. ; Karato S.-I.
刊名: Geophysical Research Letters
ISSN: 0094-9236
EISSN: 1944-8967
出版年: 2016
卷: 43, 期: 6 起始页码: 2480
结束页码: 2487
语种: 英语
英文关键词: low-velocity zone
; partial melting
; receiver functions
; transition zone
; water
Scopus关键词: Melting
; Seismology
; Water
; Dynamic interaction
; Low velocity zones
; Low-velocity anomaly
; Mantle transition zone
; Partial melting
; Receiver functions
; Transition zones
; Vertical transports
; Velocity
; dehydration melting
; detection method
; discontinuity layer
; downwelling
; low velocity zone
; mantle
; partial melting
; seismogram
; seismology
; subduction zone
; transition zone
; vertical movement
; water flow
; Japan
英文摘要: In the Japan subduction zone, a locally depressed 660 discontinuity has been observed beneath northeast Asia, suggesting downwelling of materials from the mantle transition zone (MTZ). Vertical transport of water-rich MTZ materials across the major mineral phase changes could lead to water release and to partial melting in surrounding mantle regions, causing seismic low-velocity anomalies. Melt layers implied by low-velocity zones (LVZs) above the 410 discontinuity have been detected in many regions, but seismic evidence for partial melting below the 660 discontinuity has been limited. High-frequency migrated Ps receiver functions indicate LVZs below the depressed 660 discontinuity and above the 410 discontinuity in the deep Japan subduction zone, suggesting dehydration melting induced by water transport out of the MTZ. Our results provide insights into water circulation associated with dynamic interactions between the subducted slab and surrounding mantle. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84971671181&doi=10.1002%2f2015GL067097&partnerID=40&md5=3179fa0fdc962ec80c5e3c61ffad00f0
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10199
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: Department of Geology and Geophysics, Yale University, New Haven, CT, United States
Recommended Citation:
Liu Z.,Park J.,Karato S.-I.. Seismological detection of low-velocity anomalies surrounding the mantle transition zone in Japan subduction zone[J]. Geophysical Research Letters,2016-01-01,43(6).