Collision frequencies in the D-region
Date
2002
Authors
Vuthaluru, R.
Vincent, R.
Holdsworth, D.
Reid, I.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
Journal of Atmospheric and Solar-Terrestrial Physics, 2002; 64(18):2043-2054
Statement of Responsibility
R. Vuthaluru, R. A. Vincent, D. A. Holdsworth and I. M. Reid
Conference Name
Abstract
Partial reflection differential absorption and differential phase observations have been used to systematically study collision frequencies (ν) in D-region of the lower ionosphere. The observations made with the large MF radar located at Buckland Park (35°S, 138°E) near Adelaide in the period September 1996–December 2000 show ν values larger than predicted by previously used models. The new estimates are compared with values calculated using new collision frequency momentum cross-sections for N₂(σ) measured in the laboratory. The two types of measurements are found to be in good agreement, with a moderate seasonal variation of ν at a constant height. No change due to solar cycle variations is found.