Plasma blobs observed by ground-based optical and radio techniques in the F-region under different solar activity conditions
Abstract
Observations of the OI 630 nm nightglow emission using a wide-angle imaging system have been carried out at Cachoeira Paulista (22.7°S, 45.0°W; 15.8°S dip latitude), Brazil during the period 1987 to 1999. The OI 630 nm images obtained during this period show optical signature of the plasma blobs with a strong seasonal variation. Also, it was observed that, during high solar activity, the plasma blobs occurrences were higher than during low solar activity. Important features from this set of observations are presented and discussed in this paper.
- Publication:
-
40th COSPAR Scientific Assembly
- Pub Date:
- 2014
- Bibcode:
- 2014cosp...40E2545P