EarthRef.org Reference Database (ERR)
Development and Maintenance by the EarthRef.org Database Team

Detailed Reference Information
Shiokawa et al. 2005
Shiokawa, K., Yago, K., Yumoto, K., Baishev, D.G., Solovyev, S.I., Rich, F.J. and Mende, S.B. (2005). Ground and satellite observations of substorm onset arcs. Journal of Geophysical Research 110. doi: 10.1029/2005JA011281. issn: 0148-0227.

Auroral features and associated particles and fields are investigated for a sequence of substorm onsets observed at ~1900 MLT on 24 October 2000. During a 30-min interval at 1020--1050 UT, we identified three Pi 2 wave packets with positive H enhancements at midlatitudes and associated auroral brightenings in auroral images obtained by a ground all-sky camera and the IMAGE FUV imager. The DMSP F15 satellite crossed brightening arcs during the third Pi 2 pulsation in the field-of-view of the ground camera at Tixie (66.0¿ MLAT), Russia. The crossing was 1--2 hours duskside of the main onset local time. The brightening arcs were located in the region 1 upward field-aligned current system. The most equatorward arc, which brightened just after the second Pi 2 pulsation, was at the equatorward boundary of the region 1 current and in the sunward convection region. The arcs corresponded to inverted-V accelerated electrons with energies of ~10 keV. On the basis of these simultaneous ground-satellite measurements, we discuss substorm onset models of reconnection/flow braking and near-Earth plasma sheet instabilities.

BACKGROUND DATA FILES

Abstract

Keywords
Magnetospheric Physics, Substorms, Magnetospheric Physics, Auroral phenomena, Magnetospheric Physics, Energetic particles, precipitating, Magnetospheric Physics, Field-aligned currents and current systems, Magnetospheric Physics, Magnetospheric configuration and dynamics, auroral particles, field-aligned current, substorm onset
Journal
Journal of Geophysical Research
http://www.agu.org/journals/jb/
Publisher
American Geophysical Union
2000 Florida Avenue N.W.
Washington, D.C. 20009-1277
USA
1-202-462-6900
1-202-328-0566
service@agu.org
Click to clear formClick to return to previous pageClick to submit