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ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa
CURRENT PROBLEMS IN REMOTE SENSING OF THE EARTH FROM SPACE

  

Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2024, Vol. 21, No. 2, pp. 122-130

Seismic-atmospheric effects in changes in meteorological parameters of the lower atmosphere, according to satellite measurements

L.G. Sverdlik 1, 2 
1 Research Station RAS in Bishkek City, Bishkek, Kyrgyzstan
2 Kyrgyz–Russian Slavic University, Bishkek, Kyrgyzstan
Accepted: 21.03.2024
DOI: 10.21046/2070-7401-2024-21-2-122-130
Two destructive earthquakes with magnitudes 7.9 and 7.3 occurred in China on May 12, 2008, and May 21, 2021, respectively. The example of these events was used to analyze space-time distributions of pre-seismic perturbations based on satellite remote sensing data (The Global MERRA-2 (Modern-Era Retrospective Analysis for Research and Applications, Version 2) reanalysis). To study the seismic-atmospheric effects and detect anomalies in changes in the parameters of the lower atmosphere, a special algorithm for analyzing satellite data was developed and used. The results showed that near the epicenter regions, 1-2 days before the seismic events, abnormal changes in temperature and wind speed were observed in the upper troposphere and the tropopause region. The disturbances were synchronized with the seismic process in both time and space. At the same time, a similarity was established in the manifestations of abnormal variations of meteorological parameters in both analyzed cases, which can probably be considered as additional evidence of the interaction of the lithosphere and the atmosphere in the periods preceding strong earthquakes. Both seismic events occurred against the background of calm geomagnetic conditions, thus the anomalies were likely to be caused by earthquake preparation processes. Acoustic-gravitational waves generated by slow oscillations of the Earth’s surface were considered as the most likely mechanism of the formation of disturbances in the layers of the lower atmosphere.
Keywords: satellite measurements, temperature, wind speed, earthquake, upper troposphere, lower stratosphere, STA/LTA criterion, integral parameter, anomaly
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