The receiver structure beneath the China Digital Seismograph Network stations

Six new crustal models for the region beneath the China Digital Seismograph Network stations are obtained by inversion and forward modeling broadband teleseismic P-wave receiver functions. The seismic phases modeled are prima rily P-to-S conversions and reverberations generated at the two highest imp edance interfaces: the Moho and the sediment-basement contact; these are th e best-constrained features of the crustal models. Receiver functions from all of the stations show some indication of laterally varying structure, bu t relatively simple 1D models can represent the crustal structure beneath t he three stations in northeast China and the two stations on the margin of the Tibetan Plateau. The station on the northern flank of the Tien Shan mou ntains is on a complex upper crustal structure that we represent with a 2D crustal model, Crustal velocity models and Moho depths from the receiver fu nction analysis are compared with other compilations of Chinese crustal str ucture. These closely agree for the more uniform crustal region in northeas tern China, but the differences are greater in southern and western China, where the crustal structure is more complex.