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Global and Local Disturbances in the Magnetotail During Reconnection : Volume 25, Issue 4 (08/05/2007)

By Laitinen, T. V.

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Book Id: WPLBN0004001485
Format Type: PDF Article :
File Size: Pages 11
Reproduction Date: 2015

Title: Global and Local Disturbances in the Magnetotail During Reconnection : Volume 25, Issue 4 (08/05/2007)  
Author: Laitinen, T. V.
Volume: Vol. 25, Issue 4
Language: English
Subject: Science, Annales, Geophysicae
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Runov, A., Nakamura, R., Rème, H., Lucek, E. A., & Laitinen, T. V. (2007). Global and Local Disturbances in the Magnetotail During Reconnection : Volume 25, Issue 4 (08/05/2007). Retrieved from

Description: Finnish Meteorological Institute, Space Research, PL 503, 00101 Helsinki, Finland. We examine Cluster observations of a reconnection event at xGSM=−15.7 RE in the magnetotail on 11 October 2001, when Cluster recorded the current sheet for an extended period including the entire duration of the reconnection event. The onset of reconnection is associated with a sudden orientation change of the ambient magnetic field, which is also observed simultaneously by Goes-8 at geostationary orbit. Current sheet oscillations are observed both before reconnection and during it. The speed of the flapping motions is found to increase when the current sheet undergoes the transition from quiet to active state, as suggested by an earlier statistical result and now confirmed within one single event. Within the diffusion region both the tailward and earthward parts of the quadrupolar magnetic Hall structure are recorded as an x-line passes Cluster. We report the first observations of the Hall structure conforming to the kinks in the current sheet. This results in relatively strong fluctuations in Bz, which are shown to be the Hall signature tilted in the yz plane with the current sheet.

Global and local disturbances in the magnetotail during reconnection

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