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The Nonlinear Coupling of Electromagnetic Ion Cyclotron and Lower Hybrid Waves in the Ring Current Region: the Magnetic Storm 1-7May 1998 : Volume 11, Issue 2 (14/04/2004)

By Khazanov, G. V.

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Book Id: WPLBN0004019597
Format Type: PDF Article :
File Size: Pages 11
Reproduction Date: 2015

Title: The Nonlinear Coupling of Electromagnetic Ion Cyclotron and Lower Hybrid Waves in the Ring Current Region: the Magnetic Storm 1-7May 1998 : Volume 11, Issue 2 (14/04/2004)  
Author: Khazanov, G. V.
Volume: Vol. 11, Issue 2
Language: English
Subject: Science, Nonlinear, Processes
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2004
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Avanov, L. A., Gamayunov, K. V., Krivorutsky, E. N., & Khazanov, G. V. (2004). The Nonlinear Coupling of Electromagnetic Ion Cyclotron and Lower Hybrid Waves in the Ring Current Region: the Magnetic Storm 1-7May 1998 : Volume 11, Issue 2 (14/04/2004). Retrieved from http://www.netlibrary.net/


Description
Description: NASA, Marshall Space Flight Center, Huntsville, Alabama, USA. The excitation of lower hybrid waves (LHWs) is a widely discussed mechanism of interaction between plasma species in space, and is one of the unresolved questions of magnetospheric multi-ion plasmas. In this paper we present the morphology, dynamics, and level of LHW activity generated by electromagnetic ion cyclotron (EMIC) waves during the 2-7 May 1998 storm period on the global scale. The LHWs were calculated based on a newly developed self-consistent model (Khazanov et. al., 2002) that couples the system of two kinetic equations: one equation describes the ring current (RC) ion dynamic, and another equation describes the evolution of EMIC waves. It is found that the LHWs are excited by helium ions due to their mass dependent drift in the electric field of EMIC waves. The level of LHW activity is calculated assuming that the induced scattering process is the main saturation mechanism for these waves. The calculated LHWs electric fields are consistent with the observational data.

Summary
The nonlinear coupling of electromagnetic ion cyclotron and lower hybrid waves in the ring current region: the magnetic storm 1-7May 1998

 

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