On the Use of Calibration Explosions at the Former Semipalatinsk Test Site for Compiling a Travel-time Model of the Crust and Upper Mantle |
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| Authors: | NN Belyashova VI Shacilov NN Mikhailova II Komarov ZI Sinyova AV Belyashov MN Malakhova |
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| Institution: | Institute of Geophysical Research, National Nuclear Center, Republic of Kazakhstan. E-mail: igr@nnc.kz, KZ
Institute of Seismology, Department of Science, Republic of Kazakhstan., KZ
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| Abstract: | —?Two chemical calibration explosions, conducted at the former Semipalatinsk nuclear test site in 1998 with charges of 25 tons and 100 tons TNT, have been used for developing travel-time curves and generalized one-dimensional velocity models of the crust and upper mantle of the platform region of Kazakhstan. The explosions were recorded by a number of digital seismic stations, located in Kazakhstan at distances ranging from 0 to 720?km. The travel-time tables developed in this paper cover the phases P, Pn, Pg, S, Sn, Lg in a range of 0–740?km and the velocity models apply to the crust down to 44?km depth and to the mantle down to 120?km. A comparison of the compiled travel-time tables with existing travel-time tables of CSE and IASPEI91 is presented. |
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