Skip to Main content Skip to Navigation
Journal articles

Surface wave dispersion across Tibet: Direct evidence for radial anisotropy in the crust

Abstract : [1] Recordings in western Tibet of Rayleigh and Love waves at periods less than 70 s from aftershocks of the 2008 Sichuan earthquake cannot be matched by an isotropic velocity model beneath Tibet. These intermediate‐period Rayleigh and Love waves require marked radial anisotropy in the middle crust of Tibet, with the vertically polarized S‐ waves propagating more slowly than S‐waves with horizontal polarization. The magnitude of anisotropy inferred using paths entirely within Tibet is slightly greater than that obtained previously from a tomographic inversion of a dataset covering a larger region. Anisotropy in the middle crust likely reflects deformation of the middle crust, and is consistent with the notion of mid‐crustal flow and thinning of the crust.
Document type :
Journal articles
Complete list of metadatas

Cited literature [36 references]  Display  Hide  Download

https://hal-insu.archives-ouvertes.fr/insu-01285792
Contributor : Eva Fareau <>
Submitted on : Thursday, March 10, 2016 - 10:26:03 AM
Last modification on : Wednesday, July 15, 2020 - 8:58:04 AM
Long-term archiving on: : Monday, June 13, 2016 - 9:23:13 AM

File

grl3811.pdf
Publisher files allowed on an open archive

Identifiers

Citation

F Duret, Nikolai M. Shapiro, Z Cao, V Levin, P Molnar, et al.. Surface wave dispersion across Tibet: Direct evidence for radial anisotropy in the crust. Geophysical Research Letters, American Geophysical Union, 2010, 37 (16), ⟨10.1029/2010GL043811⟩. ⟨insu-01285792⟩

Share

Metrics

Record views

325

Files downloads

690