Session L1: Poster Session II
2:00 PM–2:00 PM, Sunday, April 15, 2007
Hyatt Regency Jacksonville Riverfront Room: Terrace Pavilion, 2:00pm - 5:00pm
Sponsoring Unit:
APS
Abstract ID: BAPS.2007.APR.L1.6
Abstract: L1.00006 : Characteristics of untriggered substorms
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Abstract 
Authors:
Ian Swanson
(Florida Institute of Technology, Department of Physics and Space Sciences)
Ami M. DuBois
(Florida Institute of Technology, Department of Physics and Space Sciences)
Christine Gabrielse
(Florida Institute of Technology, Department of Physics and Space Sciences)
Patricia Gavin
(Florida Institute of Technology, Department of Physics and Space Sciences)
Sandra Brogl
(Florida Institute of Technology, Department of Physics and Space Sciences)
Ramon Lopez
(Florida Institute of Technology, Department of Physics and Space Sciences)
It is generally believed that most substorms have some kind of trigger such as a northward turn in the interplanetary magnetic field (IMF). We have identified over 200 isolated substorms in the North American sector from 1998-2002 based on the auroral electrojet index (AE). From this set of events, we have identified several that do not seem to have a solar wind trigger. In this presentation, we will discuss the characteristics of these events and contrast them to several events that seem to have a trigger.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2007.APR.L1.6