HR: 1300h
AN: SM52A-0563 [PDF]
TI: Oxygen Injections Into the Ring Current: Tail and Ring Current Observations Combined
AU: * Jahn, J
EM: jjahn@swri.edu
AF: Southwest Research Institute, 6220 Culebra Rd, San Antonio, TX 78238-5166 United States
AU: Elliott, H A
EM: helliott@swri.edu
AF: Southwest Research Institute, 6220 Culebra Rd, San Antonio, TX 78238-5166 United States
AU: Peterson, W K
EM: bill.peterson@lasp.colorado.edu
AF: Univ of Colorado, LASP, 1234 Innovation Dr, Boulder, CO 80303 United States
AU: Trattner, K J
EM: trattner@mojave.spasci.com
AF: Lockheed Martin, 3251 Hanover St L9-42 B255, Palo Alto, TX 94304-1191 United States
AU: Brandt, P C
EM: brandtpc1@brandts-pc.jhuapl.edu
AF: Johns Hopkins Univ/Applied Physics Lab, Johns Hopkins Rd Rm 7-336, Laurel, MD 20723-6099 United States
AU: Mitchell, D G
EM: don.mitchell@jhuapl.edu
AF: Johns Hopkins Univ/Applied Physics Lab, Johns Hopkins Rd Rm 7-336, Laurel, MD 20723-6099 United States
AB:
We are investigating the circulation of O+ in the magnetosphere by using a combination of POALR/TIMAS in situ oxygen plasma
and IMAGE/HENA neutral oxygen remote sensing measurements during the Fall months of 2001 and 2002. HENA observations of the
inner magnetosphere / ring current show that significant quantities of oxygen are typically only observed during geomagnetic
storms, and that they are delivered in bursts by substorm activity. It also appears, that the first substorm of a storm is
not necessarily rich in oxygen. Isolated non-storm substorms, on the other hand, typically show little contribution of
oxygen. With TIMAS located in the tail lobe and the plasma sheet for extended amounts of time we can locally determine the
oxygen content and oxygen dynamics associated with those storm-time substorms. This gives us a better understanding and
correlation between the observed ring current content and the associated tail content and dynamics.
DE: 2736 Magnetosphere/ionosphere interactions
DE: 2744 Magnetotail
DE: 2764 Plasma sheet
DE: 2778 Ring current
DE: 2788 Storms and substorms
SC: SPA - Magnetospheric Physics [SM]
MN: 2003 Fall Meeting