INTERNATIONAL JOURNAL OF GEOMAGNETISM AND AERONOMY VOL. 5, GI3005, doi:10.1029/2005GI000102, 2005

Search of temporal chaos in TV images of aurora

B. V. Kozelov
Polar Geophysical Institute, Apatity, Murmansk Region, Russia

N. Y. Vjalkova
Kola Department of Petrozavodsk State University, Apatity, Murmansk Region, Russia

Abstract

[1] Television (TV) data obtained during the development of an auroral form contain information about the spatial and temporal dynamics of the form generation. It is possible to investigate the spatial distribution of auroral luminosity in each image. Also, one can study the temporal dynamics of aurora using keograms or "virtual photometers.'' In this report we investigate the temporal dynamics using information about the spatial distribution of auroral luminosity to define the metric in "space of images.'' The algorithm of Grassberger-Procaccia has been applied to obtain the correlation dimension as a characteristic of the temporal chaos in sets of TV images of aurora. The approach has been applied to TV observations of pulsation aurora at Lovozero station.

Received 12 November 2002; accepted 28 February 2005; published 14 April 2005.

Keywords: TV images of aurora; auroral luminosity; temporal dynamics of aurora.

Index Terms: 2704 Magnetospheric Physics: Auroral phenomena; 2794 Magnetospheric Physics: Instruments and techniques; 2736 Magnetospheric Physics: Magnetosphere/ionosphere interactions.

Citation: Kozelov, B. V., and N. Y. Vjalkova (2005), Search of temporal chaos in TV images of aurora, Int. J. Geomagn. Aeron., 5, GI3005, doi:10.1029/2005GI000102.