1978 Diffuse Auroral Boundaries and a Derived Auroral Boundary Index
Author | : M. S. Gussenhoven |
Publisher | : |
Total Pages | : 214 |
Release | : 1982 |
ISBN-10 | : UOM:39015095141936 |
ISBN-13 | : |
Rating | : 4/5 (36 Downloads) |
Book excerpt: DMSP/F2 and F4 precipitating electron data are used to determine statistically the systematic variations of the equatorward boundary with Kp as a function of local time. The boundaries were chosen by hand for every DMSP/F2 satellite pass in 1978. These in turn are used to assess an algorithm developed to choose the boundaries automatically. From the statistical variations each boundary is projected to a midnight boundary. The projected midnight boundary served as an index of auroral activity-the Auroral Boundary Index. Listing of the 1978 hand- and computer-chosen boundaries and the Auroral Boundary Index for 1978 are included in appendices.