UNSPECIFIED (2002) Nonlinear MHD waves in the solar wind plasma structures. In: 2nd Euroconference on Solar Cycle and Space Weather, SEP 24-29, 2001, VICO EQUENSE, ITALY.

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Abstract

We investigate the interaction of magnetohydrodynamic waves with plasma density inhomogeneities. Our numerical study of the full MHD equations shows that: (A) Plasma density inhomogeneities are a source of non-linear generation of transverse compressive waves by a plane Alfven wave, and substantially enhance (by about a factor of 2) the generation of the longitudinal compressive waves. (B) Attained maximal values of the generated transverse compressive waves are insensitive to the strength of the plasma density inhomogeneity and the initial amplitude of the Alfven wave. (C) Efficiency of the generation depends weakly upon the plasma parameter. The maximum generated amplitude of transverse compressive wave, up to 32 % of the initial Alfven wave amplitude, is reached for about beta = 0.5. The results obtained demonstrate that plasma inhomogeneities enhance the efficiency of the non-linear wave coupling.

Item Type:	Conference Item (UNSPECIFIED)
Subjects:	Q Science > QB Astronomy
Series Name:	ESA SPECIAL PUBLICATIONS
Journal or Publication Title:	SOLSPA 2001: PROCEEDINGS OF THE SECOND SOLAR CYCLE AND SPACE WEATHER EUROCONFERENCE
Publisher:	ESA PUBLICATIONS DIVISION C/O ESTEC
ISBN:	92-9092-749-6
ISSN:	0379-6566
Editor:	SawayaLacoste, H
Date:	2002
Volume:	477
Number of Pages:	4
Page Range:	pp. 381-384
Publication Status:	Published
Title of Event:	2nd Euroconference on Solar Cycle and Space Weather
Location of Event:	VICO EQUENSE, ITALY
Date(s) of Event:	SEP 24-29, 2001
URI:	http://wrap.warwick.ac.uk/id/eprint/10307

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