Show simple item record

dc.contributor.authorAl-Lazki, A.
dc.contributor.authorSeber, D.
dc.contributor.authorSandvol, E.
dc.contributor.authorTurkelli, N.
dc.contributor.authorMohamad, R.
dc.contributor.authorBarazangi, M.
dc.identifier.citationGeophysical Research Letters, vol. 30, no. 24, 2003en_US
dc.descriptionAn edited version of this paper was published by the American Geophysical Union (AGU). Copyright 2003, AGU. See also:;
dc.description.abstractWe use Pn phase travel time residuals to invert for mantle lid velocity and anisotropy beneath northern Arabia eastern Anatolia continent-continent collision zone. The primary phase data were obtained from the temporary 29- station broadband PASSCAL array of the Eastern Turkey Seismic Experiment. These data were supplemented by phase data from available stations of the Turkish National Seismic Network, the Syrian National Seismic Network, the Iranian Long Period Array, and other stations around the southern Caspian Sea. In addition, we used carefully selected catalog data from the International Seismological Centre and the National Earthquake Information Center bulletins. Our results show that low (<8 km/s) to very low (<7.8 km/s) Pn velocity zones underlie the Anatolian plateau, the Caucasus, and northwestern Iran. Such low velocities are used to infer the presence of partially molten to absent mantle lid beneath these regions. In contrast, we observed a high Pn velocity zone beneath northern Arabia directly south of the Bitlis-Zagros suture indicating the presence of a stable Arabian mantle lid. This sharp velocity contrast across the suture zone suggests that Arabia is not underthrusting beneath the Anatolian plateau and that the surface suture extends down to the uppermost mantle. Pn anisotropy orientations within a single plate (e.g. Anatolia plate) show a higher degree of lateral variation compared to Pn velocity. Areas of coherent Pn anisotropy orientations are observed to continue across major fault zones such as the EAF zone.en_US
dc.format.extent535481 bytes
dc.publisherAmerican Geophysical Unionen_US
dc.subjectPn wavesen_US
dc.subjectSeismic anisotropyen_US
dc.subjectAnatolian Plateauen_US
dc.titleTomographic Pn velocity and anisotropy structure beneath the Anatolian plateau (eastern Turkey) and the surrounding regionsen_US

Files in this item


This item appears in the following Collection(s)

Show simple item record