| DOI: | 10.1002/2015GL066446
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| 论文题名: | Terrane-controlled crustal shear wave splitting in Taiwan |
| 作者: | Okaya D.; Christensen N.I.; Ross Z.E.; Wu F.T.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9440
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| EISSN: | 1944-9171
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| 出版年: | 2016
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| 卷: | 43, 期:2 | | 起始页码: | 556
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| 结束页码: | 563
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| 语种: | 英语
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| 英文关键词: | crustal seismic anisotropy
; intrinsic material anisotropy
; local earthquakes
; rock physic acoustic measurements
; seismic onshore-offshore profiling
; shear wave splitting
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| Scopus关键词: | Acoustics
; Anisotropy
; Deformation
; Earthquakes
; Geochronology
; Geophysics
; Metamorphic rocks
; Minerals
; Rocks
; Seismology
; Shear flow
; Tectonics
; Acoustic measurements
; Material anisotropy
; Seismic anisotropy
; Seismic onshore-offshore profiling
; Shear wave splitting
; Shear waves
; acoustic imagery
; arc-continent collision
; crustal thickening
; deformation mechanism
; Eurasian plate
; metamorphic rock
; orogeny
; Philippine Sea plate
; plate convergence
; rock property
; S-wave
; seismic anisotropy
; tectonic evolution
; wave splitting
; Pacific Ocean
; Philippine Sea
; Taiwan
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| 英文摘要: | Taiwan is the result of arc-continent collision associated with the convergence of the Philippine Sea plate with the eastern Eurasian plate continental margin. The locus of deformation is found in eastern Taiwan in the form of mountain building (Central Range) with underlying thickened lithosphere. Rapid tectonic exhumation in the Central Range has uncovered low-to-high-grade metamorphic rocks marked by steep cleavage. We carried out a crustal seismic anisotropy study across Taiwan, producing a database of over 27,000 local earthquake shear wave splitting measurements. Additionally, we carried out rock physics measurements of metamorphic outcrop samples to quantify shear wave rock anisotropy. We produced a map of station-averaged splitting measurements across Taiwan. Patterns of fast shear wave directions correlate with tectonic terranes produced by plate convergence. Deformation-related mineral-preferred orientation in the metamorphic rocks produces a significant amount of the crustal anisotropy in the Taiwan collision zone. © 2016. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84961285527&doi=10.1002%2f2015GL066446&partnerID=40&md5=6d46c32211de3b355dc2686dfd64629c
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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/10403
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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: | Department Earth Sciences, University of Southern California, Los Angeles, CA, United States
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| Recommended Citation: | |
Okaya D.,Christensen N.I.,Ross Z.E.,et al. Terrane-controlled crustal shear wave splitting in Taiwan[J]. Geophysical Research Letters,2016-01-01,43(2).
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