Makran Subduction Zone crustal structure
Description
Two complementary data sets are inverted to obtain the on-shore Makran Subduction Zone crustal structure. The first (JB022942.prfdata.tgz) consist of P-wave receiver function. The receiver functions files are in SAC format. Information on the individual waveforms are contained in the header of the SAC files. The second (JB022942.rwgvdata.tgz) consists of pseudo-dispersion curves for each of the site formatted for input to the SURF96 code of Herrmann [2013]. References Ahmadzadeh-Irandoust, M., K. Priestley, and F. Sobouti (2022), Crustal structure of the Iranian Plateau, to be submitted to Geochemistry, Geophysics, Geosystems, in preparation. Herrmann, R. B. (2013), Computer programs in seismology: An evolving tool for instruction and research, Seismological Research Letters, 84(6), 1081–1088. Ligorria, J. P., and C. J. Ammon (1999), Iterative Deconvolution and Receiver-Function Estimation, October, 89(5), 1395–1400.
Files
Steps to reproduce
Seismic recordings come primarily from a network of 23 temporary seismographs operated between mid-2016 and late 2020 over the western portion of the Makran Subduction Zone in southern Iran. Recordings were made from either Guralp CMG3t or CMG3esp sensors and Guralp data loggers. In addition we include data from two seismographs operated by the International Institute of Earthquake Engineering and Seismology and one seismograph operated by the University of Tehran. The 26 recording sites lie along a ∼400 km long profile, trending approximately northward from the coast more or less parallel to the plate convergence direction and with an average of ∼20-25 km station spacing. Waveforms from events greater than mb 5.5 in the distance 30◦ to 90◦ were band-pass filtered between 0.05 and 2.0 Hz, rotated from NS and EW to radial and transverse with respect to the event-station great-circle path, and receiver functions were computed using the iterative deconvolution method of Ligorria and Ammon [1999]. To stabilize the time domain deconvolution, we applied a 2.5 Gaussian width filter. The fundamental mode group velocity dispersion observations for the western Makran are taken from Irandoust [2021]. References Ahmadzadeh-Irandoust, M., K. Priestley, and F. Sobouti (2022), Crustal structure of the Iranian Plateau, to be submitted to Geochemistry, Geophysics, Geosystems, in preparation. Herrmann, R. B. (2013), Computer programs in seismology: An evolving tool for instruction and research, Seismological Research Letters, 84(6), 1081–1088. Ligorria, J. P., and C. J. Ammon (1999), Iterative Deconvolution and Receiver-Function Estimation, October, 89(5), 1395–1400.