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SPACE-TIME VARIATIONS OF SHORT-PERIOD S WAVE ATTENUATION FIELD IN THE REGION OF SEMIPALATINSK TEST SITE (USING RECORDINGS OF NUCLEAR AND CHEMICAL EXPLOSIONS)
1 Schmidt Institute of Physics of the Earth, Russian Academy of Sciences
2 Institute of Geophysical Research, National Nuclear Center of the Ministry of Energy of the Republic of Kazakhstan
Journal: Geophysical processes and biosphere
Tome: 21
Number: 4
Year: 2022
Pages: 44-52
UDK: 550.344
DOI: 10.21455/GPB2022.4-3
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Kopnichev
I.N Yu.F. SPACE-TIME VARIATIONS OF SHORT-PERIOD S WAVE ATTENUATION FIELD IN THE REGION OF SEMIPALATINSK TEST SITE (USING RECORDINGS OF NUCLEAR AND CHEMICAL EXPLOSIONS)
// . 2022. Т. 21. № 4. С. 44-52. DOI: 10.21455/GPB2022.4-3
@article{Kopnichev
I.NSPACE-TIME2022,
author = "Kopnichev
I.N, Yu. F.",
title = "SPACE-TIME VARIATIONS OF SHORT-PERIOD S WAVE ATTENUATION FIELD IN THE REGION OF SEMIPALATINSK TEST SITE (USING RECORDINGS OF NUCLEAR AND CHEMICAL EXPLOSIONS)
",
journal = "Geophysical processes and biosphere",
year = 2022,
volume = "21",
number = "4",
pages = "44-52",
doi = "10.21455/GPB2022.4-3",
language = "English"
}
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Keywords: Semipalatinsk Test Site, shear waves, attenuation, deep-seated fluids.
Аnnotation: We have been analyzing spatio-temporal variations of shear wave attenuation field in the region of Semipalatinsk Test Site (STS). We studied variations of amplitude ratio for Lg- and Pg-waves (parameter Lg/Pg) using recordings of underground nuclear and also calibration and quarry explosions till the end of 1980-th and 2021 respectively. Variations of S-coda envelopes using seismograms of chemical explosions, obtained by near stations on the territory of the STS, were also investigated. We suppose that space-time variations of short-period S-wave attenuation field are connected with deep-seated fluids migration in the earth crust and uppermost mantle, stipulated by long-term intensive explosion influence on the geological medium.
