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High-Resolution Regional Phase Attenuation Models of the Iranian Plateau and Zagros (Postprint)

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Annual rept. no. 1, 1 Sep 2010-19 Mar 2012

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Development of high-resolution seismic attenuation models of the Iranian Plateau and the Zagros Mountains is undertaken. Previous studies have suggested a complexity in crustal and uppermost mantle seismic attenuation structure as well as regional phase propagation characteristics beneath much of the Iranian Plateau and the surrounding regions. Regional seismic phases show strong lateral variability in amplitude and frequency content due to this very complex structure. Furthermore, due to a lack of two-dimensional seismic array data, much of the three-dimensional seismic structure and propagation characteristics of the crust, lithosphere and upper mantle remain unknown. Data collected by a series of deployments which consisted of approximately 140 temporary and permanent seismic stations in the Iranian Plateau and the Zagros Mountains is being used with a comprehensive set of techniques to develop and calibrate high-resolution regional phase attenuation models of the crust and upper mantle for a major portion of Arabian-Eurasian plate boundary. Validation of these results will include calibration with selected ground-truth events and comparison with existing amplitude models. A catalog of well located events that have reliable source spectra determined using coda will be created.

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  • Seismology

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