INTERNATIONAL JOURNAL OF GEOMAGNETISM AND AERONOMY VOL. 5, GI2005, doi:10.1029/2004GI000074, 2004

Envelope solitons of the giant pulsations (Pg)

B. I. Klain, and N. A. Kurazhkovskaya
The Borok Geophysical Observatory, Borok, Yaroslavl Region, Russia

Abstract

[1] Using the data of the observations at auroral observatory Molodezhnaya (Antarctic, L = 6.3 ), a similarity is found in the shape of the wave packets amplitudes envelope of giant pulsations to solitons. The relation is analyzed between the maximum amplitude ( A ), the carrier in frequency ( f ), and the width of wave packets ( t ) for 30 cases of observations of the Pg pulsations having the form of separated wave packets. It is shown that the maximum amplitude of wave packets depends linearly on 1/t f^1/2. We suggest that some Pg pulsations present nonlinear structures having the properties of solutions.

Received 25 May 2004; revised 31 August 2004; accepted 14 September 2004; published 30 October 2004.

Keywords: Giant pulsations; Solitons; Geomagnetic pulsation parameters.

Index Terms: 2772 Magnetospheric Physics: Plasma waves and instabilities; 2752 Magnetospheric Physics: MHD waves and instabilities; 2740 Magnetospheric Physics: Magnetospheric configuration and dynamics.

Citation: Klain, B. I., and N. A. Kurazhkovskaya (2004), Envelope solitons of the giant pulsations (Pg), Int. J. Geomagn. Aeron., 5, GI2005, doi:10.1029/2004GI000074.