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Title: Sn attenuation in the Anatolian and Iranian plateau and surrounding regions
Authors: Gok, R.
Sandvol, E.
Turkelli, N.
Seber, D.
Barazangi, M.
Keywords: Anatolian Plateau
Iranian Plateau
Sn waves
Issue Date: 2003
Publisher: American Geophysical Union
Citation: Geophysical Research Letters, vol. 30, no. 24, 2003
Abstract: The propagation characteristics of the regional Sn shear waves have been mapped to provide insight into the lithospheric structure of the Anatolian and Iranian plateau and the surrounding regions. Thousands of regional earthquakes within the distance range of 2?15 degrees were recorded by broadband and short period stations located in Turkey and nearby regions, especially new data recorded by 29 broadband stations in the Eastern Turkey Seismic Experiment network. The propagation efficiencies of Sn were determined visually using their amplitude and frequency content. Attenuation maps were then tomographically constructed using the observed propagation efficiencies. Our results confirm that Sn propagates efficiently in the uppermost mantle beneath the Mediterranean Sea, the Black Sea, and the Caspian Sea and along the Zagros fold and thrust belt. Sn is not observed in eastern Turkey, northwestern Iran, or central Anatolia. In contrast to previous available studies, this study considerably improved the mapped location of the boundaries between the zones of efficient and attenuated Sn. Our results are best explained by an absence of lithospheric mantle, or the presence of thin and hot lithospheric mantle beneath most of the Anatolian and Iranian plateau.
Description: An edited version of this paper was published in Geophysical Research Letters by the American Geophysical Union (AGU). Copyright 2003, AGU. See also:;
ISSN: 0094-8276
Appears in Collections:Middle East and North Africa Region Projects
Prof. Muawia Barazangi

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