| DOI: | 10.1002/grl.50987
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| 论文题名: | Evidence of active mantle flow beneath South China |
| 作者: | Wang C.-Y.; Flesch L.M.; Chang L.; Zheng T.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8486
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| EISSN: | 1944-8217
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| 出版年: | 2013
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| 卷: | 40, 期:19 | | 起始页码: | 5137
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| 结束页码: | 5141
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| 语种: | 英语
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| 英文关键词: | GPS
; Mantle Coupling
; Shear-Wave Splitting
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| Scopus关键词: | Buoyancy forces
; Integrated effects
; Mantle convection
; Plate motions
; Shear wave splitting
; Small-scale convection
; Surface motions
; Tibetan Plateau
; Global positioning system
; Shear waves
; Tectonics
; Digital storage
; assessment method
; buoyancy
; collision
; convection
; GPS
; lithosphere
; mantle
; S-wave
; slab
; subduction
; Baikal Rift Zone
; China
; Himalayas
; Qinghai-Xizang Plateau
; Russian Federation
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| 英文摘要: | The India-Eurasia collision is responsible for producing the Himalayan Mountains and Tibetan plateau and has been hypothesized to have significant far field influences, including driving the Baikal rift and the eastward extrusion of South China. However, quantification of lithospheric buoyancy forces and integrated effect of tractions acting at base of the lithosphere are unable to explain the observed surface motions within South China. We present 198 new SKS shear wave splitting observations beneath South China and invert these data along with published GPS data to solve for the subasthenospheric flow field beneath South China to assess the role of small-scale convection here. We find a 15-20 mm/yr southwestward-directed mantle flow toward the Burma slab. This flow is consistent with the mantle response of slab retreat over the past 25 Ma, and counter flow due to subduction of Burma/Sunda slabs demonstrating the importance of localized mantle convection on present-day plate motions. Key Points We present 198 new SKS shear-wave splitting observations beneath South China SKS and GPS data are inverted to predict mantle flow Subduction of Burma/Sunda slab induces mantle flow that drives surface motions ©2013. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84885335319&doi=10.1002%2fgrl.50987&partnerID=40&md5=dde453d14038e8aee7c0f00c0fa7452c
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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/5750
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| Appears in Collections: | 气候减缓与适应
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作者单位: | China Earthquake Administration, Institute of Geophysics, Beijing, China
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| Recommended Citation: | |
Wang C.-Y.,Flesch L.M.,Chang L.,et al. Evidence of active mantle flow beneath South China[J]. Geophysical Research Letters,2013-01-01,40(19).
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