HR: 10:55h
AN: SM22A-03    [Abstracts]
TI: Investigation of space and ground low-frequency particle and field oscillations during the 23 March 2007 substorm
AU: * Keiling, A
EM: keiling@ssl.berkeley.edu
AF: UC Berkeley, SSL, a, Berkeley, USA,
AU: Angelopoulos, V
AF: UC Berkeley, SSL, a, Berkeley, USA,
AU: Larson, D
AF: UC Berkeley, SSL, a, Berkeley, USA,
AU: McFadden, J
AF: UC Berkeley, SSL, a, Berkeley, USA,
AU: Carlson, C
AF: UC Berkeley, SSL, a, Berkeley, USA,
AU: Bonnell, J W
AF: UC Berkeley, SSL, a, Berkeley, USA,
AU: Mozer, F
AF: UC Berkeley, SSL, a, Berkeley, USA,
AU: Glassmeier, K
AF: TU Braunschweig, a, Braunschweig, Germany,
AU: Auster, U
AF: TU Braunschweig, a, Braunschweig, Germany,
AU: Roux, A
AF: CETP, a, Paris, France,
AU: LeContel, O
AF: CETP, a, Paris, France,
AU: Mende, S
AF: UC Berkeley, SSL, a, Berkeley, USA,
AU: Frey, H
AF: UC Berkeley, SSL, a, Berkeley, USA,
AU: Donovan, E
AF: University of Calgary, a, Calgary, Canada,
AU: Mann, I
AF: University of Alberta, a, Edmonton, Canada,
AU: Shiokawa, K
AF: Nagoya Universiy, a, Nagoya, Japan,
AU: Yumoto, K
AF: Kyushu University, a, Kyushu, Japan,
AU: Liu, W
AF: LASP, a, Boulder, USA,
AU: Li, X
AF: LASP, a, Boulder, USA,
AU: Parks, G
AF: UC Berkeley, SSL, a, Berkeley, USA,
AU: Fillingim, M
AF: UC Berkeley, SSL, a, Berkeley, USA,
AU: Lui, A
AF: APL, a, Baltimore, USA,
AB: We will report in-situ THEMIS and ground observations and analyses of various quantities at and after the onset of the 23 March 2007 substorm. The spacecraft were located in the Southern Hemisphere magnetotail between 8 and 12 RE (radial distance) while their local time meridians approximately mapped onto the 210MM magnetometer network. The following key results will be presented: (1) Alfven waves (circularly polarized) coincided with substorm-related energetic ion injections. (2) Strong ion outflow occurred on the same field lines as those carrying the Alfven waves and the ion injections. (3) Simultaneously, ground magnetometer recorded very large, long-period Pi2 (~135 sec) covering low- to high latitudes. (4) Periodic (~135 sec) energetic ion fluxes at THEMIS were temporally one-to-one correlated with the ground Pi2, both of which showing similar characteristics. Results of all five THEMIS spacecraft, THEMIS ground stations, and the 210MM ground stations will be included.
DE: 2716 Energetic particles: precipitating
DE: 2721 Field-aligned currents and current systems (2409)
DE: 2752 MHD waves and instabilities (2149, 6050, 7836)
DE: 2790 Substorms
SC: SPA-Magnetospheric Physics [SM]
MN: 2007 Fall Meeting