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Detailed Reference Information |
Iucci, N., Levitin, A.E., Belov, A.V., Eroshenko, E.A., Ptitsyna, N.G., Villoresi, G., Chizhenkov, G.V., Dorman, L.I., Gromova, L.I., Parisi, M., Tyasto, M.I. and Yanke, V.G. (2005). Space weather conditions and spacecraft anomalies in different orbits. Space Weather 3: doi: 10.1029/2003SW000056. issn: 1542-7390. |
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A large database of anomalies, registered by 220 satellites in different orbits over the period 1971--1994, has been compiled. For the first time, data of 49 Russian Kosmos satellites have been included in a statistical analysis. The database also contains a large set of daily and hourly space weather parameters. A series of statistical analyses made it possible to quantify, for different satellite orbits, space weather conditions in the days characterized by anomaly occurrences. In particular, very intense fluxes (>1000 particles cm-2 s-1 sr-1 (pfu) at energy >10 MeV) of solar protons are linked to anomalies registered by satellites in high-altitude (>15,000 km) near-polar (inclination >55¿) orbits typical for navigation satellites such as those used in the GPS network, NAVSTAR, etc. (the rate of anomalies increases by a factor of ~20) and to a much smaller extent to anomalies in geostationary orbits (the rate increases by a factor of ~4). The efficiency in producing anomalies is found to be negligible for proton fluences 10 MeV. Elevated fluxes of energetic (>2 MeV) electrons >108 cm-2 d-1 sr-1 are observed by GOES on days with satellite anomalies occurring at geostationary (GOES, SCATHA, METEOSAT, MARECS A, etc.) and low-altitude (55¿) orbits (Kosmos, SAMPEX, etc.). These elevated fluxes are not observed on days of anomalies registered in high-altitude near-polar orbits. Direct and indirect connections between anomaly occurrence and geomagnetic perturbations are also discussed. |
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Abstract |
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Keywords
Magnetospheric Physics, Energetic particles, trapped, Magnetospheric Physics, Energetic particles, precipitating, Magnetospheric Physics, Magnetic storms and substorms, satellite anomalies, geomagnetic storms, cosmic rays |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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