the crustal structure beneath the northwest of the zagros (kermanshah region) from teleseismic receiver functions

in this study, we used teleseismic data which was recorded by 5 stations (dhr, ghg, kom, lin and vis) of the kermanshah seismic network from 2003 to 2007 with mb?5.5 and epicentral distances from 30° to 95°. the crustal structure beneath these stations was determined by the modeling of the p receiver functions. the main phases, which were observed in our final p receiver functions, are moho conversions, their multiples in the crust, and conversions at the base of the sediments. we obtained a 2-layer model for the crust of the kermanshah region. the crust beneath this region is approximately 42 km thick and consists of a 9 to 18 km thick sedimentary layer overlying a 24 to 35 km thick layer. the average shear wave velocity was estimated to be 3.69 kms-1 in the crust and reaches to 4.80 kms-1 under moho and those obtained from other geophysical studies.