Changes in thermospheric density caused by turbulence variations |
| |
| Institution: | 1. Space Research Institute (IKI), 84/32 Profsoyuznaya, 117997 Moscow, Russia;2. CNRS LATMOS, 11 bd d''Alembert, 78280 Guyancourt, France;3. LATMOS/IPSL, UVSQ Université Paris-Saclay, Sorbonne Université, CNRS, 11 bd d''Alembert, 78280 Guyancourt, France;1. Faculty of Engineering, Kindai University, Hiroshima Campus, 1 Takaya Umenobe, Higashi-Hiroshima, Hiroshima 739-2116, Japan;2. Luleå University of Technology, Space Campus, Kiruna 981 28, Sweden;3. Research Organization of Science and Technology, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan;4. CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences (CAS), 511 Kehua Street, Tianhe District, Guangzhou 510640, Wushan, China;5. CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China;6. Department of Earth Science, Graduate School of Science, Tohoku University, Aoba 6-3, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan;7. The Tohoku University Museum, Tohoku University, Aoba 6-3, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan;8. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Kanagawa 252-8510, Japan |
| |
| Abstract: | Seasonal and geomagnetic density variations in the thermosphere can be explained either by a system of thermally driven winds or, equally well, by changes in the turbulence structure. Observations show that both processes take place, but their relative importance has not yet been established. In this paper, a model incorporating both mechanisms is presented. Whereas seasonal changes may be generated by changes in the turbopause height, geomagnetic perturbations may be associated with a turbulent layer above the homopause region. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
