Onset and Cessation of Magnetic Reconnection: Missing Links of Substorm Evolution

Details Onset and Cessation of Magnetic Reconnection: Missing Links of Substorm Evolution Onset and Cessation of Magnetic Reconnection: Missing Links of Substorm Evolution

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agusmsm22a..04h&link_type=abstract

American Geophysical Union, Spring Meeting 2007, abstract #SM22A-04

Physics

2753 Numerical Modeling, 2788 Magnetic Storms And Substorms (7954), 7526 Magnetic Reconnection (2723, 7835)

Scientific paper

Magnetic reconnection determines the overall evolution of a magnetic substorm. As the primary conversion process of magnetic energy to particle bulk kinetic and thermal energy, it also provides the new magnetic flux, which is threading the main current sheet during the substorm dipoloarization. Owing to the critical importance of reconnection to substorm evolution, the questions of when and how reconnection starts, and how reconnection ceases require answers if magnetospheric evolution is to be described quantitatively. In this presentation, we present a brief overview of research into both questions. Specifically, we will show that thin current sheets play a critical role in reconnection, and hence, substorm initiation, and we will describe a number of candidate causes for reconnection cessation.

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