Electric field measurements during the MAC/EPSILON campaign |
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| Institution: | 1. Communications and Space Sciences Laboratory, Department of Electrical Engineering, The Pennsylvania State University, University Park, PA 16802, U.S.A.;2. Wallops Flight Facility, NASA Goddard Space Flight Center, Wallops Island, VA 23337, U.S.A.;3. Norwegian Defence Research Establishment, P.O. Box 25, N-2007 Kjeller, Norway;1. Centre for Advanced Engineering Materials, School of Engineering, Robert Gordon University, Riverside East, Garthdee Road, Aberdeen, AB10 7GJ, UK;2. School of Pharmacy and Life Sciences, Robert Gordon University, Aberdeen, AB10 7GJ, UK;1. Max Planck Institute for Plasma Physics, Boltzmannstr. 2, 85748 Garching, Germany;2. ENEA Frascati, Department of Fusion, via E. Fermi 45, 00044 Frascati, Italy;3. CEA, IRFM, F-13108 Saint Paul Lez Durance, France;1. Oregon State University, USA;2. Karlsruhe Institute of Technology, Germany;1. Division of Energy Technology, Chalmers University of Technology, Göteborg 412 96, Sweden;2. Inorganic Chemistry Department and Materials Sciences Institute, University of Seville-CSIC, Seville, Spain;1. Service d’anatomopathologie, hôpital Saint-Louis, 1, avenue Claude Vellefaux, 75010 Paris, France;2. Service de dermatologie, hôpital Saint-Louis, 1, avenue Claude Vellefaux, 75010 Paris, France;3. Université Paris Diderot–Paris VII, COMUE Sorbonne Paris Cité, 75013 Paris, France |
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| Abstract: | As part of the MAC/EPSILON campaign in northern Norway during October and November 1987, five rocket-borne payloads made three-axis electric field measurements of the middle atmosphere. Flights 31.066 and 31.067 consisted of large multi-experiment packages, while the other three flights (30.036, 30.037 and 30.038) were devoted primarily to electrical measurements. Simultaneous measurements of the horizontal electric field made by flights 31.066 and 30.036 were in general agreement in their limited altitude region of overlap. A simultaneous small temporal feature was observed in both datasets. The relatively more extensive horizontal E-field datasets from 31.066 and 31.067 both exhibited a decreasing mapping function with decreasing altitude, which is an indication of the observation of fields from a local auroral patch. Small-scale variations in the horizontal fields of the flights were similar to observed wave-like variations in the neutral wind field. No unusual features were observed at high altitudes in the measured E1 field. Two of the payloads observed small vertical layer structures between 40 and 50 km. No electric field structure was observed in association with the presence of a sudden sodium layer. |
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