Crustal structure and deformation beneath the NE margin of the Tibetan plateau constrained by teleseismic receiver function data

Simple item page
dc.citation.firstpage167en_US
dc.citation.issueNumber1en_US
dc.citation.journalTitleGeophysical Journal Internationalen_US
dc.citation.lastpage179en_US
dc.citation.volumeNumber204en_US
dc.contributor.authorWang, Qiongen_US
dc.contributor.authorNiu, Fenglinen_US
dc.contributor.authorGao, Yuanen_US
dc.contributor.authorChen, Yuntaien_US
dc.date.accessioned2017-05-15T21:11:38Zen_US
dc.date.available2017-05-15T21:11:38Zen_US
dc.date.issued2016en_US
dc.description.abstractWe analysed a large amount of teleseismic receiver function data recorded by 172 broadband stations in the NE Tibetan plateau and its surrounding areas to investigate the crustal velocity and anisotropy structure beneath the margin. We first applied the modified H–κ stacking technique to measure the crustal thickness and average Vp/Vs ratio, and then employed a joint inversion scheme to measure azimuthal anisotropy of the crust beneath each station. The observed crustal thickness and Vp/Vs ratio exhibit large variations across the study area, varying from 32 to 75.6 km and from 1.601 to 1.864, respectively. We also found significant azimuthal anisotropy within the crust beneath 12 stations, with a splitting time between 0.36 and 1.06s. The fast polarization directions align well with surface structures, and follow the directions of the maximum horizontal tensile stress. The low Vp/Vs ratio and the strong azimuthal anisotropy observed beneath the margin suggest that whole crustal shortening might be the dominant mechanism for producing the thick crust in NE Tibet. We compared the measured seismic anisotropy with those measured from XKS (SKS, PKS and SKKS), and found that crustal anisotropy appears to play an important role in explaining the amount of XKS splitting times. More importantly, the Moho Ps and the XKS share similar fast polarization directions, suggesting a vertically coherent deformation within the lithosphere beneath the margin.en_US
dc.identifier.citationWang, Qiong, Niu, Fenglin, Gao, Yuan, et al.. "Crustal structure and deformation beneath the NE margin of the Tibetan plateau constrained by teleseismic receiver function data." <i>Geophysical Journal International,</i> 204, no. 1 (2016) Oxford University Press: 167-179. https://doi.org/10.1093/gji/ggv420.en_US
dc.identifier.doihttps://doi.org/10.1093/gji/ggv420en_US
dc.identifier.urihttps://hdl.handle.net/1911/94275en_US
dc.language.isoengen_US
dc.publisherOxford University Pressen_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.subject.keywordSeismicity and tectonicen_US
dc.subject.keywordBody wavesen_US
dc.subject.keywordSeismic anisotropyen_US
dc.subject.keywordCrustal structureen_US
dc.subject.keywordAsiaen_US
dc.titleCrustal structure and deformation beneath the NE margin of the Tibetan plateau constrained by teleseismic receiver function dataen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Crustal-structure.pdf
Size:
28.96 MB
Format:
Adobe Portable Document Format
Download
Collections
Faculty Publications
Earth, Environmental and Planetary Sciences Publications