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A Case Study of a Radially Polarized Pc4 Event Observed by the Equator-s Satellite : Volume 18, Issue 4 (30/11/-0001)

By Cramm, R.

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Book Id: WPLBN0004000717
Format Type: PDF Article :
File Size: Pages 5
Reproduction Date: 2015

Title: A Case Study of a Radially Polarized Pc4 Event Observed by the Equator-s Satellite : Volume 18, Issue 4 (30/11/-0001)  
Author: Cramm, R.
Volume: Vol. 18, Issue 4
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

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Baumjohann, W., Othmer, C., Fornacon, K. H., Glassmeier, K. H., Auster, H. U., Cramm, R., & Georgescu, E. (-0001). A Case Study of a Radially Polarized Pc4 Event Observed by the Equator-s Satellite : Volume 18, Issue 4 (30/11/-0001). Retrieved from http://ebook.worldlibrary.net/


Description
Description: Institut für Geophysik und Meteorologie, Technische Universität, Mendelssohnstr. 3, D-38106 Braunschweig, Germany. A 16 mHz Pc4 pulsation was recorded on March 17, 1998, in the prenoon sector of the Earth's magnetosphere by the Equator-S satellite. The event is strongly localized in radial direction at approximately L = 5 and exhibits properties of a field line resonance such as an ellipticity change as seen by applying the method of the analytical signal to the magnetic field data. The azimuthal wave number was estimated as m \approx 150. We discuss whether this event can be explained by the FLR mechanism and find out that the change in ellipticity is more a general feature of a localized Alfvén wave than indicative of a resonant process.

Key words: Magnetospheric physics (MHD waves and instabilities)


Summary
A case study of a radially polarized Pc4 event observed by the Equator-S satellite

 

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