Physics
Scientific paper
Nov 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998sct..conf...69h&link_type=abstract
Proceedings of the 6th Spacecraft Charging Conference. November 2-6, 1998. AFRL Science Center, Hanscom AFB, MA, USA., p.69-72
Physics
Scientific paper
A set of ˜500 anomalies observed on a spacecraft of the European Space Agency, Meteosat, is investigated by using a non-linear classification method of the high energy electron flux measured on board. This technique allows to investigate quantitatively the relationships between the environment data and the occurrence of the anomalies. A characteristic time for the build-up of the process leading to an anomaly is shown to be of about four days. However, it is not clear yet to what extend this time scale is related to the anomaly mechanism or to the associated magnetospheric processes. Moreover, the result of the study suggests that not only the time integrated flux of energetic electrons has an influence on the anomaly occurrence but also the time variation of the flux over several days.
Andersson L.-L.
Grystad D.
Hilgers Alain
Wu Jian-Guo
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