Summary
The period May 10-12, 1999 saw the solar wind density drop to very low levels, accompanied by a large expansion of the magnetosphere. A minimum density below one particle per cm3 was attained for several hours before the solar wind pressure returned to normal levels. Observations from many sources indicated a small polar cap region over this period, with observations of electron precipitation and enhanced polar rain. This paper will present the event as seen by the Casey Digisonde, and discuss the observed ionograms and convection velocities.
Authors:Breed A.M. Parkinson M.L. Dyson P.L. Morris R.J.
Published in: 2000
Category 3: Abstract
Program area: Space and Atmospheric Sciences
Breed A.M., Parkinson M.L., Dyson P.L., Morris R.J.
(2000)
Digisonde Observations at Casey, Antarctica on the 'Day the Solar Wind Almost Stopped', May 10-12, 1999,
14th National Congress of the Australian Institute of Physics, Adelaide, December 2000.
.;
Related projects
Ionospheric dynamics in the polar cusp [Observational]
MORRIS, Dr Raymond (Ray)
Mawson, Davis, Macquarie Island, Casey