Artificial control of equatorial spread-F |
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| Affiliation: | 1. School of Management, State University of New York at Buffalo, Buffalo, NY, United States;2. School of Accounting and Finance, Hong Kong Polytechnic University, Hong Kong;3. College of Economics, Sungkyunkwan University, Seoul, Republic of Korea;1. Departmentof Surgery, University of Minnesota, Minneapolis, MN 55455, USA;2. BioTechnology Institute, University of Minnesota, St. Paul, MN 55108, USA;3. Department of Soil, Water, and Climate, University of Minnesota, St. Paul, MN 55108, USA;4. Department of Plant and Microbial Biology, University of Minnesota, St. Paul, MN 55108, USA;1. Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, P.O. Box 94240, 1090 GE Amsterdam, The Netherlands;2. The Centre for Decision Research and Experimental Economics (CeDEx), University of Nottingham, Sir Clive Granger Building, University Park, Nottingham NG7 2RD, United Kingdom;3. Center for Research on Experimental Economics and political Decision-making (CREED), University of Amsterdam, Roetersstraat 11, 1018 WB Amsterdam, The Netherlands;4. Famnit, University of Primorska, Glagoljaška 8, SI-6000 Koper, Slovenia |
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| Abstract: | We have studied the influence of a large amplitude electric field oscillating near the upper hybrid frequency on the dispersion characteristics of low frequency Rayleigh-Taylor modes and collisional drift modes. Since these modes have been proposed as principal constituents of spread-F, we investigate the conditions for the parametric excitation or control of these F-region irregularities, by an external field. We obtain the modified growth rates as well as the threshold power necessary to carry out such a ground based ‘modification’ experiment. The propagation characteristics of the pump wave are also briefly discussed. |
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