Storm-Substorm Relation

Details Storm-Substorm Relation Storm-Substorm Relation

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agusmsm42b..04w&link_type=abstract

American Geophysical Union, Spring Meeting 2002, abstract #SM42B-04

Physics

2704 Auroral Phenomena (2407), 2788 Storms And Substorms, 2407 Auroral Ionosphere (2704)

Scientific paper

The storm-substorm relationship is one of the central issues in magnetospheric physics. Whether there is a unique relationship between substorms and storms is still being debated. During geomagnetic storm periods, magnetic disturbances take place globally, and auroras become very active over the entire oval. These often make identification of a substorm, which has smaller magnetic and optical effects, difficult, if not impossible. In this presentation, we will address this issue using Polar UVI images. Specifically, we will ask (1) how often can substorms be observed during the storm main phase vs. the recovery phase, and (2) is there any difference between substorms occurring in the main phase vs. the recovery phase? This study is based on 27 storm events that occurred from 1996 to 1999 with simultaneous global ultraviolet auroral observations from NASA's Polar mission. Detailed results will be presented and implication of the results will be discussed.

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