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Models(form)of long-,medium-and short-term earthquake precursors

Geodesy and geodynamics 2022年第6期13卷 609-618页

作者： Abdullabekov Kakharbay Nasirbekovich Yusupov Valijon Rustamovich Institute of Seismology of the Academy of Sciences of Uzbekistan TashkentUzbekistan

Through analysis and generalization of more than 50 years of monitoring data pertaining to geomagnetic earthquake precursors in landfills across Uzbekistan involving repeated route and area surveys and stationary observations,as well as extensive data retrieved from the study of the complex in foreign countries,models of long-,medium-and short-term earthquake precursors were created for the first ***-and short-term data were mainly studied based on monitoring data of the precursor complex considering geodynamic polygons in *** analysis demonstrated that these precursors exhibit different shapes,configurations and *** occurred no uniform precursor *** exhibited bay-shaped forms,including both positive and negative signs,in addition to stepped,wave-oscillatory and other *** variety of manifestation forms primarily depends on the surrounding regions’geological and tectonic structures and the various processes in the Earth’s crust.

关键词： Epicentre Earthquakes Precursor geodynamic polygon Forecast Magnetic field

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Results of Geomagnetic Studies on the Problem of Forecasting Strong Earthquakes in Uzbekistan

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International Journal of Geosciences 2023年第5期14卷 437-449页

作者： Kakharbay Nasirbekovich Abdullabekov Sabitjan Khamidovich Maksudov Valijon Rustamovich Yusupov Institute of Seismology of the Academy of Sciences of Uzbekistan Tashkent Uzbekistan

The article is devoted to the problem of forecasting strong earthquakes by the geomagnetic method. The geomagnetic method is widely used on this problem in seismically active regions of the world as one of the promising, informative and operational geophysical methods. The results of long-term geomagnetic studies on the problem of forecasting strong earthquakes in Uzbekistan are presented. Geomagnetic studies were carried out on the territories of the Tashkent, Ferghana, and Kyzylkum geodynamic polygons in the epicentral zones of strong earthquakes that occurred. Long-term, medium- and short-term precursors of earthquakes have been identified. Anomalous changes in the geomagnetic field associated with the decline in aftershock activity were also revealed. The dependence between the duration of the manifestation of long-term magnetic precursors and the magnitude of earthquakes is determined. Absolute proton magnetometers MMP-1, MV-01 (Russia), and G-856 (USA) were used to measure the geomagnetic field.

关键词： geodynamic polygon Geomagnetic Field Anomaly Earthquake Precursor Magnitude Epicenter Magnetic Station Magnetometer

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