Equatorial night-time spread-F characteristics observed from stations in the Western Pacific |
| |
| Affiliation: | 1. Department of Geology, School of Natural Sciences, Trinity College Dublin, Dublin 2, Ireland;2. Escuela de Geología, Universidad Nacional Mayor de San Marcos, Lima, Peru;1. Institute of Science and Technical Information of China, Beijing 100038, PR China;2. Research Institute of Forest Ecology Environment and Protection, Chinese Academy of Forest, Beijing 100091, PR China;3. Henan Agricultural University, Zhengzhou 450002, PR China;4. Institute of Geographic Sciences and National Resources Research, Chinese Academy of Science, Beijing 100101, PR China |
| |
| Abstract: | A comparative study of the ionospheric spread-F observed at an equatorial station. Port Moresby (9°24.5′S, 147°9.9′E; magn. dip lat. 18°S). Papua New Guinea, with corresponding data from the East Asian stations during a period 27 May–19 June 1983, as well as the same periods for 1981 and 1982, is presented. The Port Moresby spread-F condition is particularly outstanding and persistent at night and the occurrence of spread-F between 23 LT and 05 LT near June solstice is very high, reaching 100 % of all observed nights. The latitudinal variation of nocturnal spread-F, its duration and connection with sunspot number are analyzed. The relationship between long-term variation of night-time spread-F occurrence and solar activity during June and December solstices from 1954 up to 1984 at a typical lower magnetic latitudinal station, Wuhan (30°32.7′N, 114°21.5′E; magn. dip lat. 26°N). is also investigated. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
