DOI: 10.1002/2016GL069513
论文题名: Seismic evidence of the Hainan mantle plume by receiver function analysis in southern China
作者: Wei S.S. ; Chen Y.J.
刊名: Geophysical Research Letters
ISSN: 0094-8661
EISSN: 1944-8392
出版年: 2016
卷: 43, 期: 17 起始页码: 8978
结束页码: 8985
语种: 英语
英文关键词: Hainan mantle plume
; receiver functions
Scopus关键词: Seismology
; Continental margin
; Mantle plume
; Mantle transition zone
; Receiver function analysis
; Receiver functions
; S-receiver functions
; Seismic discontinuities
; Surface expression
; Thermal plumes
; basalt
; Cenozoic
; continental margin
; igneous province
; mantle discontinuity
; mantle plume
; mantle upwelling
; Moho
; outcrop
; P-wave
; S-wave
; seismic velocity
; seismograph
; teleseismic wave
; transition zone
; China
; Guangdong
; Hainan
; Leiqiong Depression
; Leizhou Peninsula
英文摘要: The Lei-Qiong region is the largest igneous province in southern China and may be a surface expression of a mantle plume beneath the region (the Hainan mantle plume). To investigate the existence of the Hainan mantle plume, we used P-to-S receiver function to image the major seismic discontinuities beneath this region with a regional dense broadband array. We found that the Moho discontinuity beneath the Leizhou Peninsula, mostly covered by Cenozoic basaltic outcrops, is 10–15 km deeper compared to the adjacent region of Eurasian continental margin, showing a thickened local crust by upwelling mantle materials. Additionally, the imaged 410- and 660-km discontinuities suggest a thinner-than-normal mantle transition zone beneath the region, implying that hot materials penetrate through the transition zone from the lower mantle. Both seismic evidences support the existence of the mantle plume, which might be 170–200°C hotter than the surrounding mantle. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84987746819&doi=10.1002%2f2016GL069513&partnerID=40&md5=1ed5013fb1be5517c4a69cc1fde01091
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9624
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: Institute of Theoretical and Applied Geophysics, School of Earth and Space Sciences, Peking University, Beijing, China
Recommended Citation:
Wei S.S.,Chen Y.J.. Seismic evidence of the Hainan mantle plume by receiver function analysis in southern China[J]. Geophysical Research Letters,2016-01-01,43(17).