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Ann. Geophys., 21, 2011-2023, 2003
www.ann-geophys.net/21/2011/2003/
© European Geosciences Union 2003
Fractal approach to description of the auroral structure
B. V. Kozelov
Polar Geophysical Institute, Apatity, Murmansk Region, 184209 Russia
Abstract. During the last two
decades the fractal geometry has become a powerful approach to different
physical problems. It is also found to be useful in image processing
applications. A numerical quantity that characterizes the auroral structure
would be important for auroral investigations. We try to obtain the quantity on
the basis of the box-counting dimension of the line of equal intensity. In this
paper we present results of some tests of our procedure by simulated images.
The possibilities that the approach gives us for analysis of the auroral
dynamics are discussed. The auroral dynamics during several typical auroral
events are considered.
Key words. Ionosphere (auroral
ionosphere) – Magnetospheric physics (magnetosphere-ionosphere interactions)
– Space plasma physics (nonlinear phenomena)
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