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www.ann-geophys.net/26/3999/2008/
doi:10.5194/angeo-26-3999-2008
© European Geosciences Union 2008
First estimates of volume distribution of HF-pump enhanced emissions at 6300 and 5577 Å: a comparison between observations and theory
1Dept. of Physics and Technology, University of Tromsø, Tromsø, Norway
2Department of Communication Systems, Lancaster University, Lancaster, UK
3HIPAS Observatory, Two Rivers AK, USA
5Space Vehicles Directorate, Air Force Research Laboratory, Hanscom AFB, MA, USA
4SRI International, Menlo Park, CA, USA
6Physical Science Dept, Embry-Riddle Aeronautical Univ., FL, USA
7Geophysical Institute, University of Alaska, Fairbanks, AK, USA
Abstract. We present bi-static observations of radio-wave induced optical emissions at 6300 and 5577 Å from a night-time radio-induced optical emission ionospheric pumping experiment at the HIPAS (Fairbanks) facility in Alaska. The optical observations were made at HIPAS and from HAARP located 285 km south-east. From these observations the altitude distribution of the emissions is estimated with tomography-like methods. These estimates are compared with theoretical models. Other diagnostics used to support the theoretical calculations include the new Poker Flat AMISR UHF radar near HIPAS. We find that the altitude distribution of the emissions agree with electron transport modeling with a source of accelerated electrons located 20 km below the upper-hybrid altitude.
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Citation: Gustavsson, B., Kosch, M., Wong, A., Pedersen, T., Heinselman, C., Mutiso, C., Bristow, B., Hughes, J., and Wang, W.: First estimates of volume distribution of HF-pump enhanced emissions at 6300 and 5577 Å: a comparison between observations and theory, Ann. Geophys., 26, 3999-4012, doi:10.5194/angeo-26-3999-2008, 2008. Bibtex EndNote Reference Manager XML
