Solar-Terrestrial Physics Solar-Terrestrial Physics Solar-Terrestrial Physics 2500-0535 100202 10.12737/stp-112202511 Results of current research Results of current research Results of current research Excitation of global artificial Pc1 signals during FENICS-2024 experiment: 1. Observations Excitation of global artificial Pc1 signals during FENICS-2024 experiment: 1. Observations 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;

 https://orcid.org/0000-0002-9117-7498 Ермакова Елена Николаевна Ermakova Elena Nikolaevna l.ermakova@nirfi.unn.ru

кандидат физико-математических наук;

candidate of physical and mathematical sciences;

 https://orcid.org/0000-0002-4864-0993 Потапов Александр Сергеевич Potapov Alexander Sergeevich potapov@iszf.irk.ru

доктор физико-математических наук;

doctor of physical and mathematical sciences;

 Марчук Роман Александрович Marchuk Roman Aleksandrovich marchuk@mail.iszf.irk.ru https://orcid.org/0000-0002-7541-3219 Колобов Виталий Валентинович Kolobov Vitaliy Valentinovich v.kolobov@ksc.ru

кандидат технических наук;

candidate of technical sciences;

 https://orcid.org/0000-0002-9042-2842 Анисимов Сергей Васильевич Anisimov Sergey Vasilevich anisimov@borok.yar.ru

доктор физико-математических наук;

doctor of physical and mathematical sciences;

 https://orcid.org/0000-0002-8460-1203 Рябов Александр Владимирович Ryabov Alexsandr Vladimirovich alexr@nirfi.unn.ru

кандидат физико-математических наук;

candidate of physical and mathematical sciences;

 https://orcid.org/0000-0003-1985-8384 Мазур Николай Григорьевич Mazur Nikolay Grigorievich ngmazur@mail.ru

кандидат химических наук;

candidate of chemical sciences;

 https://orcid.org/0000-0001-5516-3155 Федоров Евгений Николаевич Fedorov Evgeny Nikolaevich enfedorov1@yandex.ru

доктор физико-математических наук;

doctor of physical and mathematical sciences;

 https://orcid.org/0009-0000-6706-4736 Дмитриев Эльдар Михайлович Dmitriev Eldar Mihaylovich eldar@borok.yar.ru

кандидат физико-математических наук;

candidate of physical and mathematical sciences;

 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 Научно-исследовательский радиофизический институт Нижегородского университета Н. Новгород Россия Institute of Radiophysics of Nizhny Novgorod University Nizhny Novgorod Russian Federation Институт солнечно-земной физики СО РАН Иркутск Россия Institute of Solar-Terrestrial Physics SB RAS Irkutsk Russian Federation Институт солнечно-земной физики СО РАН RU Institute of Solar-Terrestrial Physics SB RAS RU Центр физико-технических проблем энергетики Севера КНЦ РАН Апатиты Россия Northern Energetics Research Centre KSC RAS Apatity Russian Federation Геофизическая обсерватория «Борок», филиал Института физики Земли им. О.Ю. Шмидта РАН Борок Россия Borok Geophysical Observatory of Schmidt Institute of Physics of the Earth RAS Borok Russian Federation Научно-исследовательский радиофизический институт Нижегородского университета Н. Новгород Россия Institute of Radiophysics of Nizhny Novgorod University Nizhny Novgorod Russian Federation Институт физики Земли им. О.Ю. Шмидта РАН Москва Россия Schmidt Institute of Physics of the Earth, RAS Moscow Russian Federation Институт физики Земли им. О.Ю. Шмидта РАН Москва Россия Schmidt Institute of Physics of the Earth RAS Moscow Russian Federation Геофизическая обсерватория «Борок» Института физики Земли РАН Борок Россия Borok Geophysical Observatory of the Institute of Physics of the Earth RAS Borok Russian Federation 26 06 2025 26 06 2025 11 2 111 118 09 12 2024 31 03 2025 https://naukaru.ru/en/nauka/article/100202/view

In July–August 2024 on the Kola Peninsula, the FENICS-2024 experiment was conducted to generate artificial electromagnetic signals at night, using two power transmission lines as a horizontal radiating antenna. The generator frequency varied discretely from session to session from 1 to 194 Hz with current amplitude from ~150 A at low frequencies to ~40 A at high frequencies. The paper presents the results of the first stage of the experiment when the power transmission line Vykhodnoy—Olenegorsk with a distance between earth electrodes of substances L=84 km was utilized as a radiating antenna. Magnetic stations, located from ~1200 to ~2100 km from the nodal substation, recorded signals with frequencies from 1 to 9 Hz with ~0.3–~6.0 fT/A amplitudes normalized to the emitter current. The observations have shown the promise of the new type of active experiments on creating a probing signal for magnetotelluric sounding over a large area. The observation results will be compared with theoretical models in the subsequent work.

In July–August 2024 on the Kola Peninsula, the FENICS-2024 experiment was conducted to generate artificial electromagnetic signals at night, using two power transmission lines as a horizontal radiating antenna. The generator frequency varied discretely from session to session from 1 to 194 Hz with current amplitude from ~150 A at low frequencies to ~40 A at high frequencies. The paper presents the results of the first stage of the experiment when the power transmission line Vykhodnoy—Olenegorsk with a distance between earth electrodes of substances L=84 km was utilized as a radiating antenna. Magnetic stations, located from ~1200 to ~2100 km from the nodal substation, recorded signals with frequencies from 1 to 9 Hz with ~0.3–~6.0 fT/A amplitudes normalized to the emitter current. The observations have shown the promise of the new type of active experiments on creating a probing signal for magnetotelluric sounding over a large area. The observation results will be compared with theoretical models in the subsequent work.

 ULF emissions distributed network FENICS power transmission line active experiments ULF emissions distributed network FENICS power transmission line active experiments The work was carried out under government assignments from the Ministry of Science and Higher Educa-tion by IPE RAS No. FMWU-2025-0043 and No. FMWU-2025-0049, SUNN NIRPhI No. FSWR-2023-0038, ISTP SB RAS No. FWSE-2021-0005, and GO Borok IPE RAS No. FMWU-2025-0049. The FENICS-2024 experiment was financially supported by RSF Grant No. 22-17-00208 (V.V.K.). The work was carried out under government assignments from the Ministry of Science and Higher Educa-tion by IPE RAS No. FMWU-2025-0043 and No. FMWU-2025-0049, SUNN NIRPhI No. FSWR-2023-0038, ISTP SB RAS No. FWSE-2021-0005, and GO Borok IPE RAS No. FMWU-2025-0049. The FENICS-2024 experiment was financially supported by RSF Grant No. 22-17-00208 (V.V.K.).

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