In search of the near-Earth neutral line: How much a role can ground-based observations play?

Details In search of the near-Earth neutral line: How much a role can ground-based observations play? In search of the near-Earth neutral line: How much a role can ground-based observations play?

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agusmsm22a..03l&link_type=abstract

American Geophysical Union, Spring Meeting 2007, abstract #SM22A-03

Physics

2723 Magnetic Reconnection (7526, 7835), 2764 Plasma Sheet, 2788 Magnetic Storms And Substorms (7954)

Scientific paper

The launch of THEMIS has raised the expectation that new progress will be made on the assessment and evaluation of competing substorm models. While the THEMIS spacecraft will offer much improved capability to delimit and localize substorm triggers, they will measure primarily "perpendicular" signatures of a near-Earth neutral line (e.g., BBFs). For "parallel" signatures of NENL, ground-based observations should prove more advantageous. However, there has been relatively little attention to what effects can be uniquely attributed to a would-be NENL, as a given auroral signature can receive more than one theoretical explanations. There is therefore a need to systematize and quantify our approach to the use of ground-based observations to detect, constrain, and characterize NENL. In this talk, we will review the ground-based observations that will be made in conjunction with THEMIS during its tail operation, identify some candidate signatures that might be related to the NENL, and outline steps to evolve this line of research through focused theory and modeling efforts.

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