Solar-Terrestrial Physics Solar-Terrestrial Physics Solar-Terrestrial Physics 2500-0535 28050 10.12737/stp-51201905 Results of current research Results of current research Results of current research Statistical relationships between variations of the geomagnetic field, auroral electrojet, and geomagnetically induced currents Statistical relationships between variations of the geomagnetic field, auroral electrojet, and geomagnetically induced currents Воробьев Андрей Владимирович Vorobev Andrey Vladimirovich geomagnet@list.ru https://orcid.org/0000-0003-3056-7465 Пилипенко Вячеслав Анатольевич Pilipenko Vyacheslav Anatolievich space.soliton@gmail.com

доктор физико-математических наук;

doctor of physical and mathematical sciences;

 Сахаров Ярослав Алексеевич Sakharov Yaroslav Alekseevich sakharov@pgia.ru

кандидат физико-математических наук;

candidate of physical and mathematical sciences;

 https://orcid.org/0000-0001-5681-065X Селиванов Василий Николаевич Selivanov Vasiliy Nikolaevich v.selivanov@ksc.ru

кандидат технических наук;

candidate of technical sciences;

 Геофизический центр РАН Москва Россия Geophysical Center RAS Moscow Russian Federation Уфимский университет науки и технологий Уфа Россия Ufa University of Science and Technology Ufa Russian Federation Институт физики Земли им. О.Ю. Шмидта РАН Москва Россия Schmidt Institute of Physics of the Earth RAS Moscow Russian Federation Геофизический центр РАН Москва Россия Geophysical Center RAS Moscow Russian Federation Институт космических исследований Москва Россия Space Research Institute Moscow Russian Federation Полярный Геофизический Институт Апатиты Россия Polar Geophysical Institute Apatity Russian Federation Центр физико-технических проблем энергетики Севера КНЦ РАН Апатиты Россия Nothern Energetics Research Centre KSC RAS Apatity Russian Federation Геофизический центр РАН Москва Россия Geophysical Center of the Russian Academy of Sciences Moscow Russian Federation Центр физико-технических проблем энергетики Севера КНЦ РАН Апатиты Россия Northern Energetics Research Centre KSC RAS Apatity Russian Federation 5 1 35 42 https://naukaru.ru/en/nauka/article/28050/view

Using observations from the IMAGE magnetic observatories and the station for recording geomagnetically induced currents (GIC) in the electric transmission line in 2015, we examine relationships between geomagnetic field and GIC variations. The GIC intensity is highly correlated (R>0.7) with the field variability |dB/dt| and closely correlated with variations in the time derivatives of X and Y components. Daily variations in the mean geomagnetic field variability |dB/dt| and GIC intensity have a wide night maximum, associated with the electrojet, and a wide morning maximum, presumably caused by intense Pc5–Pi3 geomagnetic pulsations. We have constructed a regression linear model to estimate GIC from the time derivative of the geomagnetic field and AE index. Statistical distributions of the probability density of the AE index, geomagnetic field derivative, and GIC correspond to the log-normal law. The constructed distributions are used to evaluate the probabilities of extreme values of GIC and |dB/dt|.

Using observations from the IMAGE magnetic observatories and the station for recording geomagnetically induced currents (GIC) in the electric transmission line in 2015, we examine relationships between geomagnetic field and GIC variations. The GIC intensity is highly correlated (R>0.7) with the field variability |dB/dt| and closely correlated with variations in the time derivatives of X and Y components. Daily variations in the mean geomagnetic field variability |dB/dt| and GIC intensity have a wide night maximum, associated with the electrojet, and a wide morning maximum, presumably caused by intense Pc5–Pi3 geomagnetic pulsations. We have constructed a regression linear model to estimate GIC from the time derivative of the geomagnetic field and AE index. Statistical distributions of the probability density of the AE index, geomagnetic field derivative, and GIC correspond to the log-normal law. The constructed distributions are used to evaluate the probabilities of extreme values of GIC and |dB/dt|.

 geomagnetic field geomagnetic variations geomagnetically induced currents auroral electrojet geomagnetic field geomagnetic variations geomagnetically induced currents auroral electrojet

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