Open Access

Fuzzy mathematical model for the analysis of geomagnetic field data

Earth, Planets and Space200961:BF03352968

Received: 2 March 2008

Accepted: 30 June 2009

Published: 30 November 2009


The Indian network of magnetometers provides an opportunity to examine the pattern of geomagnetic field variations during magnetic storms. In this study, fuzzy transitive closure analysis, which is a powerful technique for pattern recognition, has been employed. The pattern of variation differs at the nonequatorial, equatorial and the observatory situated nearer to the geomagnetic Sq focus. The results of the analysis are compared with those of classical cluster analysis. The comparison confirms the validity of applying this model for the analysis of geomagnetic storms. The superiority of fuzzy concepts over the conventional method and the analytical techniques are presented here.

Key words

Fuzzy logictransitive closuregeomagnetic stormgeomagnetic SqEEJ current