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Nonstationary Pearl Pulsations as a Signature of Magnetospheric Disturbances : Volume 18, Issue 5 (30/11/-0001)

By Feygin, F. Z.

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Book Id: WPLBN0004000730
Format Type: PDF Article :
File Size: Pages 6
Reproduction Date: 2015

Title: Nonstationary Pearl Pulsations as a Signature of Magnetospheric Disturbances : Volume 18, Issue 5 (30/11/-0001)  
Author: Feygin, F. Z.
Volume: Vol. 18, Issue 5
Language: English
Subject: Science, Annales, Geophysicae
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
-0001
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

APA MLA Chicago

Mursula, K., Pokhotelov, O. A., Parrot, M., Kleimenova, N. G., Prikner, K., Feygin, F. Z.,...Pikkarainen, T. (-0001). Nonstationary Pearl Pulsations as a Signature of Magnetospheric Disturbances : Volume 18, Issue 5 (30/11/-0001). Retrieved from http://www.ebooklibrary.org/


Description
Description: Institute of Physics of the Earth, Moscow, 123810, Russia. We analyse long-lasting (several hours) Pc1 pearl pulsations with decreasing, increasing or constant central frequencies. We show that nonstationary pearl events (those with either decreasing or increasing central frequency) are observed simultaneously with increasing auroral magnetic activity at the nightside magnetosphere while the stationary events (constant central frequency) correspond to quiet magnetic conditions. Events with decreasing central frequency are observed mostly in the late morning and daytime whereas events with increasing central frequency appear either early in the morning or in the afternoon. We explain the diurnal distribution of the nonstationary pearl pulsations in terms of proton drifts depending on magnetic activity, and evaluate the magnetospheric electric field based on the variation of the central frequency of pearl pulsations.

Key words: Magnetospheric physics (magnetospheric configuration and dynamics; plasma waves and instabilities)


Summary
Nonstationary pearl pulsations as a signature of magnetospheric disturbances


 

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