SOME CORRELATION TECHNIQUES FOR ENVIRONMENTALLY-INDUCED ANOMALIES ANALYSIS

The possible environmental origin of a small group of anomalies observ ed on two satellites of the European Space Agency series, Meteosat, is investigated by using both linear and nonlinear classification method s of the environmental data measured onboard the Geosynchronous Operat ional Environmental Satellites of the National Oceanic and Atmospheric Administration. The techniques developed for this study appear as pow erful tools for investigating quantitatively the relationships between the environment data and the occurrence of the anomalies in spite of the small size of the anomaly data set. Moreover, the result of the st udy suggests that not only the fluence of energetic electrons but also the time variation of the flux over several days has an influence on the anomaly occurrence.