A5022409118- Ionosphere and magnetosphere dynamics
- Earthquake Detection and Analysis
- Geomagnetism and Paleomagnetism Studies
- Solar and Space Plasma Dynamics
- Ocean Waves and Remote Sensing
- Seismic Waves and Analysis
- Lightning and Electromagnetic Phenomena
- Geophysical and Geoelectrical Methods
- earthquake and tectonic studies
- Geophysics and Gravity Measurements
- Geophysics and Sensor Technology
- Magnetic confinement fusion research
- Seismology and Earthquake Studies
- Statistical and numerical algorithms
- GNSS positioning and interference
- Methane Hydrates and Related Phenomena
- Astrophysics and Cosmic Phenomena
- Magnetic Properties and Applications
- Space exploration and regulation
- Economic and Technological Systems Analysis
- Space Satellite Systems and Control
- Oceanographic and Atmospheric Processes
- Transportation Systems and Logistics
- Diamond and Carbon-based Materials Research
- Dust and Plasma Wave Phenomena
Czech Academy of Sciences, Institute of Physics
2022-2025
Space Research Institute
2015-2024
Schmidt Institute of Physics of the Earth
2015-2024
Geophysical Center
1991-2024
Geophysical Survey
2023
Nagoya University
2013-2023
University of Michigan
2022-2023
Russian Academy of Sciences
2001-2023
Development Agency of Serbia
2023
Augsburg University
2006-2022
Abstract The strongest event of geomagnetically induced currents (GIC) detected by the North‐West Russian GIC network occurred during main phase magnetic storm on 28 and 29 June 2013. Extremely high value, 120 A, was recorded in 330 kV transformers Kola Peninsula 04–07 local time (MLT) sector. Defense Meteorological Satellite Program (DMSP) spacecraft took a sequence ultraviolet (UV) auroral images southern hemisphere observed multiple omega bands. ionospheric equivalent electric based...
Geomagnetically induced currents (GICs) represent a significant challenge for society on stable electricity supply. Space weather activates global electromagnetic and plasma processes in the near-Earth environment, however, highest risk of GICs is related not directly to those with enormous energy yield, but too much weaker, fast, processes. Here we consider several typical examples such fast their impact power transmission lines Kola Peninsula Karelia: interplanetary shocks; traveling...
Abstract The rapid changes of magnetic fields associated with nighttime perturbations amplitudes |Δ B | hundreds nanoteslas and 5‐ to 10‐min periods can induce bursts geomagnetically induced currents that harm technological systems. This paper presents three cases intervals intense complex in eastern Arctic Canada 2015, augmented by observations from auroral imagers high‐altitude spacecraft the nightside magnetosphere. Each case occurred within 1 hr after substorm onsets. None during main...
Abstract The rapid changes of magnetic fields associated with large, isolated perturbations amplitudes |Δ B | hundreds nanotesla and 5‐ to 10‐min periods can induce bursts geomagnetically induced currents that harm technological systems. This paper presents statistical summaries the characteristics nightside perturbation events observed in Eastern Arctic Canada from 2014 through 2017 using data stations are part four magnetometer arrays: MACCS, AUTUMNX, CANMOS, CARISMA, covering a range...
This review, offered for the first time in Russian scientific literature, is devoted to various aspects of problem space weather impact on ground-based technological systems. Particular attention paid hazards operation power transmission lines, railway automation, and pipelines caused by geomagnetically induced currents (GIC) during geomagnetic disturbances. The review provides information main characteristics field variability, rapid variations mani-festations. fundamentals modeling...
Abstract Geomagnetically induced currents (GICs) in a quasi-meridional power transmission line on the Kola Peninsula are analyzed during intervals of Pc5/Pi3 (frequency range from 1.5 to 5 mHz) pulsations recorded at IMAGE magnetometer network. We have GIC transformer terminal station Vykhodnoy ( $$68^{\circ }$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mn>68</mml:mn><mml:mo>∘</mml:mo></mml:msup></mml:math> N, $$33^{\circ...
The space physicists and the earthquake (EQ) prediction community exploit same instruments – magnetometers, but for different tasks: try to comprehend global electrodynamics of near-Earth on various time scales, whereas seismic develops electromagnetic methods short-term EQ prediction. lack deep collaboration between those communities may result sometimes in erroneous conclusions. In this critical review, we demonstrate some incorrect results caused by a neglect specifics geomagnetic field...
Sharp boundaries are a key feature of space plasma environments universally, with their wave-like motion (driven by pressure variations or flow shears) playing role in mass, momentum, and energy transfer. This review summarises magnetohydrodynamic surface wave theory particular reference to Earth’s magnetopause, due its mediation the solar-terrestrial interaction. Basic analytic propagating standing waves within simple models presented, highlighting many typically-used assumptions. We raise...
Орбитальные рентгеновские и гамма-телескопы зарегистрировали 9.X.2022 самый мощный из когда-либо наблюдаемых взрывов во Вселенной — гамма-всплеск GRB221009A. Отклик ионосферы Земли на это уникальное событие был обнаружен в принимаемых сигналах сверхдлинноволновых (СДВ) радиотрасс, проходящих как через дневную, так ночную ионосферу. Возмущение ночном секторе наблюдалось внезапное уменьшение амплитуды до 7 дБ резкий скачок фазы сигнала 20…30°. В дневном были обнаружены менее выраженные скачки...
Ultralow frequency (ULF) waves in the Pc5 band have been suggested as a possible intermediary transferring energy from high‑speed streams of solar wind to magnetospheric electrons. Although ULF are not only mechanism accelerating electrons up relativistic energies, nonetheless they an essential element electron energization process, though their role has finally established yet. Among observational facts regarding interrelationships between wave activity and dynamics, we discuss following...
Одно из проявлений воздействия деятельности человечества на околоземную среду, которое будет рассмотрено в данном обзоре, – это распространение электромагнитных излучений, генерируемых при работе ЛЭП и КНЧ передатчиков, через ионосферу ближний космос. Низкоорбитальный спутник CSES, высота орбиты которого составляет 528 км, пролетах над Кольским полуостровом регистрировал излучение передатчика ЗЕВС частоте 82 Гц линии электропередачи «Северный Транзит» 50 Гц. Сигнал был обнаружен расстоянии...
Появление резонансной спектральной структуры (РСС) – многополосных спектров электромагнитных шумов в диапазоне первых Гц, наблюдаемой на земной поверхности ночные часы, принято ассоциировать с возбуждением ионосферного альвеновского резонатора (ИАР) верхней ионосфере. В предлагаемом обзоре обсуждаются различные представления о конкретных механизмах возбуждения ИАР молниевыми разрядами: (1) генерация набора собственных мод ИАР, (2) образование эхо-импульса при отражении первичного импульса от...
The St. Patrick's Day geomagnetic storm on March 17, 2015, has been chosen by the space community for synergetic analysis to build a more comprehensive picture of storm's origin and evolution. This had an unusually long (~ 17 h) main phase. During this period, many substorm-like activations occurred. These resulted in bursts geomagnetically induced currents (GICs) power lines Kola peninsula. To examine substorm detail, we apply various data processing techniques world-wide array...
Abstract Large changes of the magnetic field associated with perturbation events (MPEs) amplitudes |Δ B | hundreds nT and 5–10 min duration have been frequently observed within a few hours midnight. This study compares statistical location nighttime MPEs |d /d t ≥ 6 nT/s auroral current system during 2015 2017 at two stations, Cape Dorset Kuujjuarapik, in Eastern Canada. Maps dimensional nightside were derived using Spherical Elementary Current Systems (SECS) technique. Analyses produced...
Abstract. A review is presented of the effects influencing ionosphere which are caused by acoustic emission from different sources (chemical and nuclear explosions, bolides, meteorites, earthquakes, volcanic eruptions, hurricanes, launches spacecrafts flights supersonic jets). terse statement given basic theoretical principles simplified models underlying physics propagation infrasonic pulses gravity waves in upper atmosphere. The observations "quick" response pointed out. problem magnetic...
Abstract An intriguing effect was found while analyzing the small‐scale variations of total electron content (TEC) derived from global positioning system (GPS) signals. We a response in TEC to intense Pc5 pulsations with periods few millihertz covering corrected geomagnetic latitudes ~58°–75° during recovery phase strong magnetic storms on 31 October 2003. Earlier studies demonstrated that GPS‐TEC technique is powerful method study propagation pattern transient disturbances ionosphere,...
We have examined multi-instrument observations of the magnetospheric and ionospheric response to interplanetary shock on January 24, 2012. Apart from various instruments, such as ground space magnetometers, photometers, riometers used earlier for a study possible shock, we additionally variations total electron content determined global navigation satellite system receivers. Worldwide magnetometer arrays detected shock-induced sudden commencement (SC) with preliminary main impulses...
Abstract We present the first clear observational connection between interplanetary shock impact angles and magnetospheric ultralow frequency (ULF) wave activity. perform a comparative study of two solar wind shocks with relatively similar strengths, but one being nearly frontal and, other, highly inclined. utilize multipoint observations magnetometers based in space on ground for comparisons. For satellites stations occupying local time positions, we find that ULF waves have larger...
Abstract Ground‐based technological systems, such as power grids, can be affected by geomagnetically induced currents (GIC) during geomagnetic storms and magnetospheric substorms. This motivates the necessity to numerically simulate and, ultimately, forecast GIC. The prerequisite for GIC modeling in region of interest is simulation ground geoelectric field (GEF) same region. GEF its turn requires spatiotemporal specification source which generates GEF, well an adequate regional model Earth’s...
Abstract Rapid changes of magnetic fields associated with nighttime perturbation events (MPEs) amplitudes |Δ B | hundreds nT and 5–10 min duration can induce geomagnetically induced currents (GICs) that harm technological systems. This study compares the occurrence amplitude MPEs |d /d t ≥ 6 nT/s observed during 2015 2017 at five stations in Arctic Canada ranging from 64.7° to 75.2° corrected geomagnetic latitude (MLAT) as functions local time (MLT), SME (SuperMAG version AE) SYM/H indices,...
The review offered for the first time in Russian scientific literature is devoted to various aspects of problem impact space weather on ground transport systems. An analysis available information indicates that disturbances can affect rail infrastructure through both direct and indirect effects system components. One main hazards geomagnetically induced currents (GICs) grounded extended structures excited by geomagnetic field disturbances. telluric electric fields associated with them cause...