Abstract
We characterize the attenuation structure of the Arabian Peninsula through the measurement of regional phase amplitudes. High-resolution is achieved by combining stations from global networks with national network data through the cooperative effort of several countries in the region, including Saudi Arabia, Oman, Iraq, and Kuwait. The result is an improved attenuation model of the crust and upper mantle for a broad frequency band that extends from 0.5 to 10 Hz. The observed attenuation is in accordance with various elements of earth structure, including plate boundary type, style of tectonism, thermo-tectonic age, and temperature. Emerging features from the model include details in the structure along the Red Sea, and improved imaging of the southern Arabian Peninsula extending north from the Gulf of Aden. The resulting attenuation model can be employed for better magnitude estimates, in isolating tectonic and structural features, and in characterizing strong ground motion in the Arabian Peninsula.
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Data availability
Data used in this study was obtained from the IRIS and GEOFON data centers using the I2, IE, II, IS, JS, KO, KW, and OM networks.
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Acknowledgements
We wish to thank Editor Dr. Abdullah Al-Amri and two anonymous reviewers. This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under contract DE-AC52-07NA27344. This is LLNL contribution LLNL-JRNL-815958. Work on this manuscript was funded under the Seismic Cooperation Program (SCP). Data used in this study was obtained from the IRIS and GEOFON data centers using the I2, IE, II, IS, JS, KO, KW, and OM networks. The ICONS atlas was accessed at https://www.earthbyte.org/the-intracontinental-basins-icons-atlas (last accessed May 2019).
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The attenuation tomography code is not publicly available.
Funding
This work was funded under the U.S. Department of Energy’s Seismic Cooperation Program.
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Responsible editor: Abdullah M. Al-Amri
This article is part of the Topical Collection on Seismic and Earthquake Engineering Studies in the Arabian Plate and the Surrounding Region
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Pasyanos, M.E., Tarabulsi, Y.M., Al-Hadidy, S.Y. et al. Improved lithospheric attenuation structure of the Arabian Peninsula through the use of national network data. Arab J Geosci 14, 914 (2021). https://doi.org/10.1007/s12517-021-07294-x
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DOI: https://doi.org/10.1007/s12517-021-07294-x