HR: 0830h
AN: SA41A-08    [Abstracts]
TI: The Correlation Between Mid-latitude Trough and the Plasmapause
AU: * Yizengaw, E
EM: ekassie@igpp.ucla.edu
AF: UCLA, 1Institute of Geophysics and Planetary Physics, Los Angeles, CA 90095 United States
AU: Wei, H
EM: hwei@igpp.ucla.edu
AF: UCLA, 1Institute of Geophysics and Planetary Physics, Los Angeles, CA 90095 United States
AU: Moldwin, M B
EM: mmoldwin@igpp.ucla.edu
AF: UCLA, 1Institute of Geophysics and Planetary Physics, Los Angeles, CA 90095 United States
AU: Galvan, D
EM: dgalvan@igpp.ucla.edu
AF: UCLA, 1Institute of Geophysics and Planetary Physics, Los Angeles, CA 90095 United States
AU: Mandrake, L
EM: Lukas.Mandrake@jpl.nasa.gov
AF: Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
AU: Mannucci, A
EM: Tony.Mannucci@jpl.nasa.gov
AF: Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
AU: Pi, X
EM: Xiaoqing.Pi@jpl.nasa.gov
AF: Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
AU: Sandel, B R
EM: sandel@vega.lpl.arizona.edu
AF: Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85721 United States
AB: We use simultaneous global observations of the mid-latitude trough and the plasmapause to experimentally prove a long-standing conjecture of magnetosphere-ionosphere coupling- namely the mid-latitude trough and plasmapause are on the same field line. Global Ionospheric Maps (GIM), generated using ground based GPS receivers, are used to detect the globally extended mid-latitude trough; while global IMAGE EUV pictures are used to estimate the plasmapause position. Observations during the equinox and solstices and during quiet and disturbed periods are analyzed. In addition, positions of the mid-latitude trough are calculated using a simple empirical model. The two independent observations (mid-latitude trough and plasmapause positions) and an empirical model have been compared on a global scale and found to be in excellent agreement.
DE: 2435 Ionospheric disturbances
DE: 2443 Midlatitude ionosphere
DE: 2481 Topside ionosphere
DE: 2730 Magnetosphere--inner
DE: 2768 Plasmasphere
SC: SPA-Aeronomy [SA]
MN: 2005 Joint Assembly