Simultaneous spaced direction-finding measurements of medium-latitude VLF/ELF emissions
作者： M. Hayakawa , Y. Tanaka , A. Iwai , J. Ohtsu , L.R.O. Storey
DOI: 10.1016/0032-0633(81)90065-9
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摘要: Abstract Simultaneous spaced measurements of medium-latitude VLF/ELF emissions were carried out during the three northern winters from 1976 to 1979. The experiment was making use two different kinds direction-finding systems (a field-analysis method and a goniometer network) at stations in Europe, namely Brorfelde Denmark ( L = 2.9) Chambron-la-Foret France 1.9); this enabled us locate ionospheric exit regions over wide range -values up beyond 4.0, average plasmapause location. In order study time delay temporal evolution VLF or longitudinal drift emissions, observations Moshiri Observatory Japan, widely separated longitude, are also used. overall system equipment installed is described. Then we present data good quality obtained final year's campaign (Nov. 1978–Feb. 1979). By data, able classify observed into several categories, some early results for presented.
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