A5032870668- Ionosphere and magnetosphere dynamics
- Geomagnetism and Paleomagnetism Studies
- Earthquake Detection and Analysis
- Solar and Space Plasma Dynamics
- Geophysics and Gravity Measurements
- Geophysical and Geoelectrical Methods
- Atmospheric and Environmental Gas Dynamics
- Geological Formations and Processes Exploration
- Oceanographic and Atmospheric Processes
- Plasma Diagnostics and Applications
- Atomic and Subatomic Physics Research
- Food Industry and Aquatic Biology
- Soil Moisture and Remote Sensing
- Inertial Sensor and Navigation
- Statistical and numerical algorithms
- Geochemistry and Geologic Mapping
- Magnetic confinement fusion research
- NMR spectroscopy and applications
- Meteorological Phenomena and Simulations
- Power Transformer Diagnostics and Insulation
- Geophysics and Sensor Technology
- Magnetic Field Sensors Techniques
- Magnetic and Electromagnetic Effects
- Complex Systems and Time Series Analysis
- Seismic Waves and Analysis
Institute of Geophysics
2013-2022
Polish Academy of Sciences
2013-2022
The results of the first 18 months PLASMON project are presented. We have extended our three, existing ground-based measuring networks, AWDANet (VLF/whistlers), EMMA/SANSA (ULF/FLRs), and AARDDVARK (VLF/perturbations on transmitters' signal), by eight, four new stations, respectively. networks will allow us to achieve major scientific goals, automatic retrieval equatorial electron densities density profiles plasmasphere whistler inversion, plasma mass EMMA SANSA from FLRs, developing a new,...
The development path of geomagnetic observatories Ukraine from their foundation to the present is shown. process modernization these and current state described. first digital magnetovariation stations at «Lviv» «Odesa» were installed thanks close cooperation with Institute Geophysics Polish Academy Sciences. Today, main software for preparing data in INTERMAGNET formats developed by colleagues.
Abstract. It is known that under certain solar wind (SW)/interplanetary magnetic field (IMF) conditions (e.g. high SW speed, low cone angle) the occurrence of ground-level Pc3–4 pulsations more likely. In this paper we demonstrate in event anomalously particle density, Pc3 activity extremely regardless otherwise favourable speed and angle. We re-investigate control pulsation through a statistical analysis two empirical models with emphasis on influence density activity. utilise IMF...
We illustrate a semi-automated procedure to detect the field line resonance (FLR) frequencies and derived equatorial plasma mass densities in inner magnetosphere from ULF measurements recorded at European quasi-Meridional Magnetometer Array (EMMA). FLR are detected using standard technique based on cross-phase amplitude ratio spectra pairs of stations latitudinally separated. Equatorial then inferred by solving toroidal MHD wave equation TS05 Tsyganenko magnetic model assuming 1/r dependence...
Abstract A local time dependent empirical model of the equatorial plasma mass density in inner magnetosphere is derived from field line resonance (FLR) observations at European quasi‐Meridional Magnetometer Array (EMMA). Models plasmasphere, plasmatrough, and plasmapause are separately then combined. The whole limited to (LT) sector 06:00‐18:00 range distances . It also on geomagnetic activity but only determining position. well describes recovery phase following a plasmasphere erosion not...
The technique for remote sensing the plasma mass density in magnetosphere by geomagnetic field line resonances detected at ground-based stations is getting more and popular after establishment last few years of extended magnetometer arrays, such as EMMA network recently formed framework EU FP-7 PLASMON project [1]. It important therefore to quantify level accuracy associated technique. In this study we examine effect using different magnetic models. First equatorial estimates obtained dipole...
Abstract The investigation of heavy ions dynamics and properties in the Earth's magnetosphere is still an important field research as they play role several space weather aspects. We present a statistical survey average ion mass dayside made comparing plasma density with electron number measurements focusing on both spatial geomagnetic activity dependence. Field line resonance frequency observations across European quasi‐Meridional Magnetometer Array, are used to infer equatorial range...
In this paper, we present a statistical and case analysis of nighttime Pc3 pulsations observed from middle to equatorial latitudes during the year 2003. We found two groups pulsations. Pc3s first group are in fact nightside counterpart morning with large azimuthal scales slowly attenuating toward midnight. Such night signatures waves periods fast solar wind ( $$V>500\,\hbox {km/s}$$ ). The second type is locally generated They can be under moderate velocities. Maximal occurrence rates...
Abstract We present a comparison of magnetospheric plasma mass/electron density observations during an 11‐day interval which includes the geomagnetic storm June 22, 2015. For this study we used: Equatorial mass derived from field line resonances (FLRs) detected by Van Allen Probes and at ground‐based magnetometer networks EMMA CARISMA; in situ electron inferred Neural‐network‐based Upper hybrid Resonance Determination algorithm applied to wave measurements. The combined L ∼ 4, MLT 16 two...
Abstract The Dynamic Global Core Plasma Model (DGCPM) is an empirical dynamical model of the plasmasphere which, despite its simple mathematical form, or perhaps because has enjoyed wide use in space physics modeling community. In this paper we present some recent observations from European quasi‐Meridional Magnetometer Array (EMMA) and compare these with DGCPM. suggest more rapid daytime refilling loss than what described We then modify DGCPM by changing values parameters, leaving...
The analysis of marine magnetotelluric data is often complicated by disturbing signals that are caused small-scale periodic movements the instrument. motion-induced noise leads to a bias and/or severe scattering in derived transfer functions. Both motion itself and its effects on magnetic telluric time-series investigated this study using an 80 d set includes dynamic tilt records measured Pacific Ocean off Costa Rica. We apply standard removal technique as well newly developed method correct...
Abstract. This study is an attempt to close a gap between recent research on geomagnetic pulsations and their usage as source signals in electromagnetic induction soundings (i.e., magnetotellurics, depth sounding, magnetovariational sounding). The plane-wave assumption precondition for the proper performance of these methods partly violated by local nature field line resonances which cause considerable portion at mid latitudes. It demonstrated that explained why spite this, application...
An attempt was made to separate the secular fluctuations created by external sources, according observatories Nur Miyar Vee, Lervik, Leningrad, Nimek, Belsk, Hart Land, Kiev, Lviv, Sham Bon-la-Foret, Odessa, Surlarly, Coimbra. It is shown that there are three types of oscillations associated with sources. Short-period (about 2 years) and in average periodicity 11 well known. assumed a long-term modulation period 80 years, which occurs connection changes solar activity.
We propose a new index of magnetic activity during three-hour intervals. The E is based on the energy spectra. As result fact that additive, we can use information from both horizontal components simultaneously. After calibration in relation to commonly used K index, made some numerical tests comparing indices. showed values indices are similar (differences greater than ±1 occurred only 0.1 per cent cases). also calculation correlation with magnetospheric parameters. seems correlate slightly...
The principal source and loss mechanisms in the Earth's radiation belts are currently not completely understood. Loss rates important since they determine duration of exposure satellites to enhanced conditions during a geomagnetic storm. dominant process is relativistic electron precipitation via resonant interactions with variety wave modes. These governed by characteristics plasmasphere. Current models provide an inadequate representation spatial temporal evolution In situ measurements...
The paper presents the results of analysis magnetospheric-ionospheric sources geomagnetic variations for superstorm May 10–13, 2024. This event occurred at maximum 25th cycle Wolfe solar activity and beginning 100-year activity. During this period, superstorms similar to storms October–November 2003 will occur. To analyze variations, 1-minute values Polish Ukrainian observatories (Table 1) were used. identified based on data indices Dst, Kp, AL, AU, AE model calculations. influence...
Abstract The development of navigation systems requires more and accurate base data. Currently, attention is paid to utilization geophysical fields — gravitational magnetic ones for purposes. Earth’s field distribution both onshore offshore complicated variable in time. Hence, it essential precisely know the secular variations area interest. In case Baltic Sea, this involves establishing (re-establishing) a marine network points (repeat stations) regular measurements three independent...