TITLE:
Results of Geomagnetic Studies on the Problem of Forecasting Strong Earthquakes in Uzbekistan
AUTHORS:
Kakharbay Nasirbekovich Abdullabekov, Sabitjan Khamidovich Maksudov, Valijon Rustamovich Yusupov
KEYWORDS:
Geodynamic Polygon, Geomagnetic Field Anomaly, Earthquake Precursor, Magnitude, Epicenter, Magnetic Station, Magnetometer
JOURNAL NAME:
International Journal of Geosciences,
Vol.14 No.5,
May
31,
2023
ABSTRACT: 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.