HR: 1340h
AN: SM13A-1183    [Abstracts]
TI: Investigation of the Effects of IMF Orientation Upon Delivery of Plasma Sheet Material to the Inner Magnetosphere
AU: * Denton, M H
EM: mhdenton@lanl.gov
AF: Los Alamos National Laboratory, Los Alamos National Laboratory, MS-D466, Los Alamos, NM 87545 United States
AU: Thomsen, M F
EM: mthomsen@lanl.gov
AF: Los Alamos National Laboratory, Los Alamos National Laboratory, MS-D466, Los Alamos, NM 87545 United States
AU: Skoug, R M
EM: rskoug@lanl.gov
AF: Los Alamos National Laboratory, Los Alamos National Laboratory, MS-D466, Los Alamos, NM 87545 United States
AU: Henderson, M G
EM: mghenderson@lanl.gov
AF: Los Alamos National Laboratory, Los Alamos National Laboratory, MS-D466, Los Alamos, NM 87545 United States
AU: Pollock, C J
EM: cpollock@swri.edu
AF: Southwest Research Institute, Southwest Research Institute, San Antonio, TX 78238 United States
AB: The orientation of the interplanetary magnetic field (IMF) is known to strongly control the entry of solar wind material into the Earth's magnetosphere. Within the magnetosphere various plasma properties and parameters are known to be IMF dependent. In this study we use Magnetospheric Plasma Analyser (MPA) data from the LANL constellation of satellites located in geosynchronous orbit, in conjunction with the imaging capabilities of the Medium Energy Neutral Atom (MENA) imager on-board the IMAGE satellite, to determine the effects of IMF orientation on the transport of plasma from the plasma sheet into the inner magnetosphere. A statistical study of MPA data is performed to determine bulk plasma properties at geosynchronous orbit in relation to IMF-By and IMF-Bz. In a parallel statistical study we use MENA data to determine the location of the peak nightside energetic neutral atom (ENA) emissons and to investigate whether this peak, which may indicate substorm injection regions, is IMF-dependent.
DE: 2730 Magnetosphere--inner
DE: 2760 Plasma convection
DE: 2764 Plasma sheet
DE: 2784 Solar wind/magnetosphere interactions
DE: 2788 Storms and substorms
SC: SPA-Magnetospheric Physics [SM]
MN: 2004 AGU Fall Meeting