Austral thermospheric wind circulation and interplanetary magnetic field orientation

Details Austral thermospheric wind circulation and interplanetary magnetic field orientation Austral thermospheric wind circulation and interplanetary magnetic field orientation

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....96.5777h&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 96, April 1, 1991, p. 5777-5783.

Physics

24

Atmospheric Circulation, Fabry-Perot Interferometers, Interplanetary Magnetic Fields, Thermosphere, Wind Velocity, Antarctic Regions, Momentum Transfer, Wind Direction, Wind Measurement, Zonal Flow (Meteorology)

Scientific paper

Ground-based high-resolution spectral measurements of the OI 1D emission at 15,867 K (630 nm; 1 K = 1/cm) from thermospheric altitudes at the geographic south pole are used to determine the relationship between the Southern Hemisphere high-latitude thermospheric wind circulation and the interplanetary magnetic field (IMF) during the austral winter of 1989. A clear dependence is shown between the thermospheric wind direction and magnitude and the IMF. In the midnight sector, the zonal wind magnitude is dependent on By, and the meridional component on Bz. The magnetic local times of the largest polar cap electric fields are also inferred for either sign of By. In addition, it is shown that the field angle Phi of the IMF in the Y-Z plane is also useful for ordering the neutral wind data. These ground-based wind measurements also reflect the polarity and magnitude of the IMF, at least near the observing station's magnetic midnight.

Affiliated with

Also associated with

No associations

Rating

Austral thermospheric wind circulation and interplanetary magnetic field orientation 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 Austral thermospheric wind circulation and interplanetary magnetic field orientation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Austral thermospheric wind circulation and interplanetary magnetic field orientation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1793059