HR: 11:01h
AN: SM22A-03    [Abstracts]
TI: In search of the near-Earth neutral line: How much a role can ground-based observations play?
AU: * Liu, W
EM: william.liu@space.gc.ca
AF: Canadian Space Agency, 6767 route de l'Aeroport, Saint-Hubert, QC J3Y 8Y9, Canada
AU: Liang, J
EM: jun.liang@space.gc.ca
AF: Canadian Space Agency, 6767 route de l'Aeroport, Saint-Hubert, QC J3Y 8Y9, Canada
AU: Voronkov, I
EM: igor@phys.ucalgary.ca
AF: University of Calgary, Department of Physics and Astronomy, Calgary, AB T2N 1N4, Canada
AU: Spanswick, E
EM: emma@phys.ucalgary.ca
AF: University of Calgary, Department of Physics and Astronomy, Calgary, AB T2N 1N4, Canada
AU: Jackel, B
EM: brian@phys.ucalgary.ca
AF: University of Calgary, Department of Physics and Astronomy, Calgary, AB T2N 1N4, Canada
AU: Jayachandran, P
EM: jaya@unb.ca
AF: University of New Brunswick, Department of Physics, Fredericton, NB E3B 5A3, Canada
AB: 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.
DE: 2723 Magnetic reconnection (7526, 7835)
DE: 2764 Plasma sheet
DE: 2788 Magnetic storms and substorms (7954)
SC: SPA-Magnetospheric Physics [SM]
MN: 2007 Joint Assembly