An observational basis for the dynamic substorm current system

Details An observational basis for the dynamic substorm current system An observational basis for the dynamic substorm current system

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsm31a0402g&link_type=abstract

American Geophysical Union, Fall Meeting 2005, abstract #SM31A-0402

Physics

2409 Current Systems (2721), 2704 Auroral Phenomena (2407), 2790 Substorms

Scientific paper

We present a study of the spatial and temporal morphology of the auroral current system and its coupling to the magnetosphere during substorms using three independent approaches. From the observables we have deduced a time dependent model of the large-scale auroral electrojet system. Our model shows a westward electrojet system consisting of two quasi independent components located pre- and post-midnight at different latitudes. Emphasis will be put on the observational constrains provided by a large number of ground based magnetometers and global auroral images.

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