A5079636267- Ionosphere and magnetosphere dynamics
- Earthquake Detection and Analysis
- Solar and Space Plasma Dynamics
- Geomagnetism and Paleomagnetism Studies
- GNSS positioning and interference
- Atmospheric Ozone and Climate
- Geophysics and Gravity Measurements
- Seismic Waves and Analysis
- Atmospheric chemistry and aerosols
- Geophysics and Sensor Technology
- Electromagnetic Simulation and Numerical Methods
- Air Quality Monitoring and Forecasting
- Methane Hydrates and Related Phenomena
- Quantum, superfluid, helium dynamics
- Spectroscopy and Laser Applications
- Geotechnical and Geomechanical Engineering
- Laser-Plasma Interactions and Diagnostics
- Astrophysics and Cosmic Phenomena
- Quantum optics and atomic interactions
- Luminescence Properties of Advanced Materials
- Atmospheric and Environmental Gas Dynamics
- Industrial Engineering and Technologies
- Arctic and Antarctic ice dynamics
- Cardiovascular Health and Disease Prevention
- Astro and Planetary Science
Polar Geophysical Institute
2015-2024
Schmidt Institute of Physics of the Earth
2016-2017
Br. Birkeland (Norway)
2017
Russian Academy of Sciences
2008-2011
Kola Science Centre
2010
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...
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...
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 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...
Earlier studies demonstrated that the monitoring of ionospheric total electron content (TEC) by global satellite navigation systems is a powerful method to study propagation transient disturbances in ionosphere, induced internal gravity waves. This technique has turned out be sensitive enough detect signatures magnetohydrodynamic waves as well. However, effect TEC modulation ULF not well examined responsible mechanism been firmly identified. During periods with intense Pc5 distinct...
Abstract. We compare simultaneous observations of long-period ultra-low-frequency (ULF) wave activity from a Svalbard/IMAGE fluxgate magnetometer latitudinal profile covering the expected cusp geomagnetic latitudes. Irregular Pulsations at Cusp Latitudes (IPCL) and narrowband Pc5 waves are found to be ubiquitous element ULF in dayside high-latitude region. To identify ionospheric projections cusp, we use width return signal Super Dual Auroral Radar Network (SuperDARN) radar Svalbard...
The dynamics of intense ultra-low-frequency (ULF) activity during three successive strong magnetic storms 29–31 October 2003 are considered in detail. spatial structure Pc5 waves the recovery phases these is not only from perspective possible physical mechanisms, but as an important parameter ULF driver relativistic electrons. global disturbances studied using data a worldwide array magnetometers and riometers augmented with particle detectors on board magnetospheric satellites (GOES, LANL)....
Abstract The mechanisms of the production vibrationally excited NO and N 2 molecules at altitudes middle atmosphere Earth during high‐energetic proton precipitation on 20 January 2005 are considered. study vibrational populations (X 1 Σ g + , v ′ > 0) has shown different principal in excitation. First, excitation by secondary electrons is for levels = 1−10. Second, it obtained that intramolecular electron energy transfer process (A 3 u )+N collisions dominates high 20−30. It chemical...
Abstract. The comparative research of the influence different types auroral particle precipitation and polar cap patches (PCPs) on global positioning system (GPS) signals disturbances in ionosphere was done. For this purpose, we use GPS scintillation receivers at Ny-Ålesund Skibotn, operated by University Oslo. presence determined using data from EISCAT 42m radar Svalbard. optical aurora observations 557.7 630.0 nm spectrum lines Svalbard were used as well for detection ionospheric...
Magnetopause surface eigenmodes were suggested as a potential source of dayside high-latitude broadband pulsations in the Pc5-6 band (frequency about 1–2 mHz). However, search for ground signature these modes has not provided encouraging results. The comparison multi-instrument data from Svalbard with latitudinal structure pulsations, recorded by magnetometers covering near-cusp latitudes, shown that often maximum pulsation power occurs 2–3° deeper magnetosphere than open-closed field line...
Abstract Variations of relativistic electron fluxes ( E ≥ 1 MeV) and wave activity in the Earth magnetosphere are studied to determine contribution different acceleration mechanisms outer radiation belt electrons: ULF mechanism, VLF adiabatic acceleration. The were measured by Arase satellite geostationary GOES satellites. power index is used characterize magnetospheric Pc5 range. To magnetosphere, we use data from PWE instrument satellite. We consider some most powerful magnetic storms...
Abstract The electronic kinetics of N 2 triplet states A 3 Σ u + , B Π g W Δ B' − and C in the upper middle atmosphere Earth during relativistic electron precipitation is considered. Intramolecular intermolecular energy transfers inelastic collisions electronically excited molecular nitrogen with O molecules are taken into account calculations. calculations indicate an influence atmospheric density increase on calculated vibrational populations state. For first time it shown that there a...
Abstract The electronic kinetics of O 2 singlet states a 1 Δ g and b in the upper middle atmosphere Earth during energetic electron precipitation is considered. Intramolecular intermolecular energy transfers inelastic collisions electronically excited molecular oxygen nitrogen with N molecules are taken into account calculations. calculations indicate an influence atmospheric density increase on calculated volume intensity 762 nm emission. For first time, it shown dependence column ratios...