DIURNAL VARIATIONS OF THE MAGNETIC FIELD AT THE YANGIBAZAR GEOPHYSICAL RESEARCH OBSERVATORY DURING PERIODS OF STRONG MAGNETIC STORMS
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Abstract
This paper analyzes the mean daily variations of the Earth’s magnetic field recorded at the Yangibazar Geophysical Research Observatory during periods of strong magnetic storms (Kp ≥ 7, Dst ≤ −100 nT). The study examines the diurnal dynamics, amplitude variations, and phase shifts of the main magnetic field components—H, D, and Z. The obtained results show that during strong magnetic storms, daily magnetic variations significantly increase compared to background levels and undergo notable structural changes. The findings are of great importance for the assessment and possible forecasting of earthquakes, as well as for improving regional geophysical monitoring systems.
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References
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