The response of the high-latitude dayside ionosphere to an abrupt northward transition in the IMF

Details The response of the high-latitude dayside ionosphere to an abrupt northward transition in the IMF The response of the high-latitude dayside ionosphere to an abrupt northward transition in the IMF

Jul 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993angeo..11..544r&link_type=abstract

Annales Geophysicae (ISSN 0992-7689), vol. 11, no. 7, p. 544-555.

Computer Science

Sound

10

Interplanetary Magnetic Fields, Ionospheric Currents, Ionospheric Sounding, Plasma Dynamics, Satellite Observation, Convection Currents, Daytime, Incoherent Scatter Radar

Scientific paper

We examine the response of the high-latitude ionosphere in the prenoon sector to a northward turning of the IMF. The event was observed in the 11-13 UT interval on June 1, 1987, in the course of a multiday SUNDIAL campaign. The transition in the IMF was observed by the IMP-8 satellite which was located upstream of the earth at a distance of 36 Re. The ionospheric response in the 70-80 deg invariant latitude interval was monitored by two radars. The preexisting plasma convection observed by the radars exhibited large velocities (500-1000 m/s) and stable longterm trends, consistent with the inertial rotation of the convection pattern expected of the conditions then prevailing, B(z) less than 0, B(y) greater than 0. The plasma flow rapidly abated in response to the IMF transition. The electron density measurements made by radar in the meridional plane showed that the ionosphere had been rich in structure with the active deposition of ionization by particle precipitation. Subsequently it resembled an inactive, unstructured mid-latitude configuration. There was a dramatic decrease in the amount of backscatter observed by the HF radar. We analyze the times of transition in the various data sets and show that the ionosphere began to show the effects of the IMF transition about 2 min after its probable arrival at the magnetopause boundary.

Affiliated with

Also associated with

No associations

Rating

The response of the high-latitude dayside ionosphere to an abrupt northward transition in the IMF does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The response of the high-latitude dayside ionosphere to an abrupt northward transition in the IMF, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The response of the high-latitude dayside ionosphere to an abrupt northward transition in the IMF will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1068235