HR: 10:35h
AN: SH22A-02 INVITED     [Abstracts]
TI: Direct Observation of Prompt Solar Flare Perturbation to Stratospheric Electrodynamics
AU: * Holzworth, R H
EM: bobholz@washington.edu
AF: Earth and Space Sciences, University of Washington Box 351310, Seattle, WA 98195-1310 United States
AU: Bering, E A
EM: eabering@uh.edu
AF: Department of Physics, University of Houston, Houston, TX 77204-5506 United States
AU: Kokorowski, M
EM: mkoko@washington.edu
AF: Earth and Space Sciences, University of Washington Box 351310, Seattle, WA 98195-1310 United States
AU: Reddell, B D
EM: brandon.d.reddell@boeing.com
AF: Department of Physics, University of Houston, Houston, TX 77204-5506 United States
AU: McCarthy, M P
EM: mccarthy@ess.washington.edu
AF: Earth and Space Sciences, University of Washington Box 351310, Seattle, WA 98195-1310 United States
AU: Bale, s
EM: bale@ssl.berkeley.edu
AF: Space Sciences Lab, University or California, Berkeley, CA 94720 United States
AU: Blake, J B
EM: JBernard.Blake@aero.org
AF: The Aerospace Corporation, Box 92957, Los Angeles, CA 90009-2957 United States
AU: Collier, A B
EM: colliera@ukzn.ac.za
AF: Physics Department and Space Physics Research Institute, University of KwaZulu-Natal, Durban, 4042 South Africa
AU: Hughes, A R
EM: hughes@ukzn.ac.za
AF: Physics Department and Space Physics Research Institute, University of KwaZulu-Natal, Durban, 4042 South Africa
AU: Lay, E
EM: erinlay@ess.washington.edu
AF: Earth and Space Sciences, University of Washington Box 351310, Seattle, WA 98195-1310 United States
AU: Lin, R P
EM: rlin@ssl.berkeley.edu
AF: Space Sciences Lab, University or California, Berkeley, CA 94720 United States
AU: Millan, R M
EM: Robyn.Millan@dartmouth.edu
AF: Department of Physics and Astronomy, Dartmouth College, Hanover, NH 03755 United States
AU: Moraal, H
EM: fskhm@puk.ac.za
AF: School of Physics, North-West University, Potschefstroom, 2520 South Africa
AU: O'Brien, T P
EM: Paul.OBrien@aero.org
AF: The Aerospace Corporation, Box 92957, Los Angeles, CA 90009-2957 United States
AU: Parks, G K
EM: Parks@ssl.berkeley.edu
AF: Space Sciences Lab, University or California, Berkeley, CA 94720 United States
AU: Pulupa, M
EM: pulupa@ssl.berkeley.edu
AF: Space Sciences Lab, University or California, Berkeley, CA 94720 United States
AU: Sample, J G
EM: jsample@ssl.berkeley.edu
AF: Space Sciences Lab, University or California, Berkeley, CA 94720 United States
AU: Smith, D M
EM: dsmith@scipp.ucsc.edu
AF: SCRIPP, University of California at Santa Cruz, Santa Cruz, CA 95064 United States
AU: Stoker, P
EM: fskphs@puk.ac.za
AF: School of Physics, North-West University, Potschefstroom, 2520 South Africa
AU: Woodger, L
EM: Leslie.Woodger@dartmouth.edu
AF: Department of Physics and Astronomy, Dartmouth College, Hanover, NH 03755 United States
AB: Several solar flare events were observed during the MINIS balloon experiment from SANAE station Antarctica, January 2005. The balloon payloads carried a large number of particle and field instruments which clearly identified several direct one-to-one perturbations between energetic particle flux enhancements, and the stratospheric electric field. Previous stratospheric electric field experiments have also detected one to one correlations with solar flares of both enormous size (August 1972) and quite small (February 1984). The flares during the MINIS flights produced a surprising influence on both the vertical electric field (as in the previous experiments) as well as on the horizontal electric field. The dramatic vertical electric field reductions, seen by MINIS as well as the earlier flights, may be directly related to the global circuit return currents and the influence of changing electrical conductivity. However, during the MINIS flight, we will show that the horizontal electric field also dropped to near zero. This could be caused by an abrupt cessation in large scale convection (at least locally), or by a rapid reconfiguration of the magnetosphere, perturbing the mapping of electric fields from the magnetosphere to the latitude of the balloon.
DE: 2712 Electric fields (2411)
DE: 2716 Energetic particles: precipitating
DE: 2730 Magnetosphere: inner
DE: 2794 Instruments and techniques
SC: SPA-Solar and Heliospheric Physics [SH]
MN: Fall Meeting 2005