Variation of Moho depth and Vp/Vs ratio beneath the Zagros using 3 years of teleseismic recording at twenty permanent broadband seismic stations of the Iranian Seismological Center (IRSC) where are scattered all over Zagros is presented in this paper. The results of this study are the first receiver function study for the Moho depth beneath these stations on this new dataset. We determine receiver functions by the time domain iterative deconvolution method and Moho depth and Vp/Vs ratio using a modified Zhu and Kanamori method. Our results indicate that the Moho depth beneath the Zagros Mountain Range varies from ~ 30–35 km in western Zagros near the Arabian platform, up to ~ 45 km beneath Central Zagros. In the main Zagros zone, our results indicate a uniform pattern for the Moho depth. The Moho depth reaches ~ 50–54 km beneath stations near Sanandaj-Sirjan Zone (SSZ), indicating a considerable increase of Moho depth from the west toward the east of Zagros. The depth of Moho in the southeast of Zagros is less than other parts of Zagros. We found deepening of the Moho depths beneath stations near the SSZ which can be due to the overthrusting of the crust of Zagros by the crust of central Iran along the MZT. The average Vp/Vs ratio in Zagros is 1.8.

本文介绍了在伊朗地震中心（IRSC）的20个永久性宽带地震台站进行了3年的远震记录后，在Zagros下的Moho深度和Vp / Vs比率的变化。这项研究的结果是在此新数据集上针对这些站下方的Moho深度进行的第一个接收器函数研究。我们通过时域迭代解卷积方法以及改进的Zhu和Kanamori方法通过Moho深度和Vp / Vs比确定接收器函数。我们的结果表明，扎格罗斯山脉下方的莫霍面深度从阿拉伯平台附近的扎格罗斯西部约30-35公里，到扎格罗斯中部下方约45公里不等。在主要的扎格罗斯地区，我们的结果表明莫霍面深度具有统一的模式。莫霍深度在Sanandaj-Sirjan区（SSZ）附近的测站下方约50-54 km，表明从西向扎格罗斯东部的莫霍深度显着增加。扎格罗斯东南部的莫霍面深度小于扎格罗斯其他地区。我们发现SSZ附近站点下方的Moho深度加深，可能是由于Zagros地壳被伊朗中部沿MZT地壳推翻所致。扎格罗斯的平均Vp / Vs比为1.8。