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ABSTRACT: To determine the crustal structure in central Tibet, we used teleseismic waveform data recorded by 18 stations in the INDEPTH-III
seismic array across the central Tibet from the central Lhasa terrane to the central Qiangtang terrane. The S-wave velocity
structures beneath stations are determined by inverting the stacked radial receiver function using the GA method. The first
order features in the receiver function are modeled. Our results show that the Moho in Qiangtang is about 8 km shallower than
that in Lhasa terrane along the INDEPTH-III profile. It maybe suggests the northward subduction of the Lhasa mantle lid beneath
the Qiangtang terrane is affected by the India-Asia collision. We conclude that there exist low velocity zone in the middle
crust across the northern Lhasa and Qiangtang terrane, which can be related to the high temperature upper mantle beneath that.
Acta Seismologica Sinica 01/2006; 19(6):633-642.