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Ann. Geophys., 23, 3009-3018, 2005
www.ann-geophys.net/23/3009/2005/
© European Geosciences Union 2005
Space weather and space anomalies
L. I. Dorman1,2, N. Iucci3, A. V. Belov2, A. E. Levitin2, E. A. Eroshenko2, N. G. Ptitsyna4, G. Villoresi3, G. V. Chizhenkov2, L. I. Gromova2, M. Parisi3, M. I. Tyasto4, and V. G. Yanke2
1Israel Cosmic Ray and Space Weather Center, affiliated to Tel Aviv University, Technion, and Israel Space Agency, Israel
2IZMIRAN, Russian Academy of Science, Moscow, Russia
3Dipartimento di Fisica E. Amaldi, Roma-Tre University, Rome, Italy
4SPb FIZMIRAN, Russian Academy of Science, St. Petersburg, Russia
Abstract. 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 from 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 on the days characterized by anomaly occurrences. In particular,
very intense fluxes (>1000 pfu at energy >10 MeV) of solar protons are
linked to anomalies registered by satellites in high-altitude
(>15000 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 ~20), and to a much smaller extent to
anomalies in geostationary orbits, (they increase by a factor ~4).
Direct and indirect connections between anomaly occurrence and geomagnetic
perturbations are also discussed.
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