Seismic attenuation tomography of the Sn phase beneath the Turkish-Iranian Plateau and the Zagros mountain belt

Abstract The Turkish-Iranian Plateau and the Zagros highlands are among most prominent physiographic features in Middle East were formed as a result of continental collision between Arabian Eurasian plates. To better understand nature lithospheric mantle origin observed seismic anomalies this region, we investigated attenuation uppermost by detailed measurements quality factor Sn phase (Sn Q). that end, collected large data set consisting 30 years (1990–2020) waveforms recorded 1266 permanent temporary stations, applying both two-station method (TSM) reverse (RTM) to measure path-averaged Q. Finally, performed tomographic inversion on Q map lateral variations upper-mantle across northern East. Our maps show moderately low (<250) values beneath high (>350) edge plate. Furthermore, our model is broadly consistent with velocity models region suggesting thermal rather than compositional effects.