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Found 9 entries in the Bibliography.
Showing entries from 1 through 9
2018 |
ROTI Maps: a new IGS ionospheric product characterizing the ionospheric irregularities occurrence The International GNSS Service (IGS) has recently accepted for official release a new ionospheric product to characterize ionospheric irregularity and intensity as derived from multi-site ground-based GPS observations. This product was developed and implemented in the Space Radio-Diagnostic Research Center (SRRC), University of Warmia and Mazury. The SRRC has implemented this approach using in-house software for multi-step processing and interpretation of carrier phase delays in dual-frequency GPS signals and provides the ... Cherniak, Iurii; Krankowski, Andrzej; Zakharenkova, Irina; Published by: GPS Solutions Published on: 06/2018 YEAR: 2018   DOI: 10.1007/s10291-018-0730-1 |
We use a set of ground-based instruments (Global Positioning System receivers, ionosondes, magnetometers) along with data of multiple satellite missions (Swarm, C/NOFS, DMSP, GUVI) to analyze the equatorial and low-latitude electrodynamic and ionospheric disturbances caused by the geomagnetic storm of 22\textendash23 June 2015, which is the second largest storm in the current solar cycle. Our results show that at the beginning of the storm, the equatorial electrojet (EEJ) and the equatorial zonal electric fields were larg ... Astafyeva, E.; Zakharenkova, I.; Hozumi, K.; Alken, P.; isson, Co; Hairston, M.; Coley, W.; Published by: Journal of Geophysical Research: Space Physics Published on: 03/2018 YEAR: 2018   DOI: 10.1002/jgra.v123.310.1002/2017JA024981 |
The dynamic picture of the response of the high- and mid-latitude ionosphere to the strong geomagnetic disturbances on March 17-18, 2015, has been studied with ground-based and satellite observations, mainly, by transionospheric measurements of delays of GPS (Global Positioning System) signals. The advantages of the joint use of ground-based GPS measurements and GPS measurements on board of the Swarm Low-Earth-Orbit satellite mission for monitoring of the appearance of ionospheric irregularities over the territory of Russ ... Zakharenkova, I.; Cherniak, Iu.; Shagimuratov, I.; Klimenko, M.; Published by: Geomagnetism and Aeronomy Published on: 01/2018 YEAR: 2018   DOI: 10.1134/S0016793217050176 |
2016 |
Using data from the three Swarm satellites, we study the ionospheric response to the intense geomagnetic storm of June 22\textendash23, 2015. With the minimum SYM-H excursion of -207 nT, this storm is so far the second strongest geomagnetic storm in the current 24th solar cycle. A specific configuration of the Swarm satellites allowed investigation of the evolution of the storm-time ionospheric alterations on the day- and the nightside quasi-simultaneously. With the development of the main phase of the storm, a s ... Astafyeva, Elvira; Zakharenkova, Irina; Alken, Patrick; Published by: Earth, Planets and Space Published on: 09/2016 YEAR: 2016   DOI: 10.1186/s40623-016-0526-x |
We present an analysis of ionospheric irregularities at high latitudes during the 2015 St. Patrick\textquoterights Day storm. Our study used measurements from\ ~2700 ground-based GPS stations and GPS receivers onboard five low earth orbit (LEO) satellites\textemdashSwarm A, B and C, GRACE and TerraSAR-X\textemdashthat had close orbit altitudes of\ ~500\ km, and the Swarm in situ plasma densities. An analysis of the rate of TEC index (ROTI) derived from LEO\textendashGPS data, together with Swarm in situ pla ... Cherniak, Iurii; Zakharenkova, Irina; Published by: Earth, Planets and Space Published on: 07/2016 YEAR: 2016   DOI: 10.1186/s40623-016-0506-1 |
2015 |
The magnetosphere substorm plays a crucial role in the solar wind energy dissipation into the ionosphere. We report on the intensity of the high-latitude ionospheric irregularities during one of the largest storms of the current solar cycle\textemdashthe St. Patrick\textquoterights Day storm of 17 March 2015. The database of more than 2500 ground-based Global Positioning System (GPS) receivers was used to estimate the irregularities occurrence and dynamics over the auroral region of the Northern Hemisphere. We analyze the ... Cherniak, Iurii; Zakharenkova, Irina; Published by: Earth, Planets and Space Published on: 12/2015 YEAR: 2015   DOI: 10.1186/s40623-015-0316-x Auroral hemispheric power index Auroral precipitation; geomagnetic storm; GPS; Ionosphere irregularities; ROTI |
We present the first multi-instrumental results on the ionospheric response to the geomagnetic storm of 17\textendash18 March 2015 (the St. Patrick\textquoterights Day storm) that was up to now the strongest in the 24th solar cycle (minimum SYM-H value of -233 nT). The storm caused complex effects around the globe. The most dramatic positive ionospheric storm occurred at low latitudes in the morning (~100\textendash150\% enhancement) and postsunset (~80\textendash100\% enhancement) sectors. These significant vertical tota ... Astafyeva, Elvira; Zakharenkova, Irina; Förster, Matthias; Published by: Journal of Geophysical Research: Space Physics Published on: 10/2015 YEAR: 2015   DOI: 10.1002/2015JA021629 geomagnetic storm; hemispheric asymmetry; Ionosphere; negative storm; positive storm; Swarm mission |
We report first results on the study of the high-latitude ionospheric irregularities observed in worldwide GPS data during the St. Patrick\textquoterights Day geomagnetic storm (17 March 2015). Multisite GPS observations from more than 2500 ground-based GPS stations were used to analyze the dynamics of the ionospheric irregularities in the Northern and Southern Hemispheres. The most intense ionospheric irregularities lasted for more than 24 h starting at 07 UT of 17 March. This period correlates well with an increase of t ... Cherniak, Iurii; Zakharenkova, Irina; Redmon, Robert; Published by: Space Weather Published on: 09/2015 YEAR: 2015   DOI: 10.1002/swe.v13.910.1002/2015SW001237 auroral precipitation; geomagnetic storm; Ionosphere; irregularities; rate of TEC |
2014 |
We studied the contribution of the global plasmaspheric and ionospheric electron content (PEC and IEC) into total electron content (TEC). The experimental PEC was estimated by comparison of GPS TECobservations and FORMOSAT-3/COSMIC radio occultation IEC measurements. Results are retrieved for the winter solstice (January and December 2009) conditions. Global maps of COSMIC-derived IEC, PECand GPS TEC were compared with Global Self-consistent ... Klimenko, M.V.; Klimenko, V.V.; Zakharenkova, I.E.; Cherniak, Iu.V.; Published by: Advances in Space Research Published on: 06/2014 YEAR: 2014   DOI: 10.1016/j.asr.2014.06.027 FORMOSAT-3/COSMIC; GPS; Numerical modeling; Plasmasphere; total electron content |
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