Title
Papers on Japanese research into the 'ionospheric equatorial anomaly', 1939 to 1948
Reference
UK0108 SC MSS 270/01
Date
1939 to 1966
Creator
Scope and Content
Copies of extracts from Japanese reports and a thesis from the period 1939 to 1948, regarding the equatorial anomaly, which were supplied to Professor L W Barclay in 1966 by Professor Naburo Wakai of Tokai University Institute of Research & Development.
The ionospheric equatorial anomaly (also known as the Appleton anomaly), is the feature of the F2 region of the ionosphere where, over the equator region, there is a dip in the maximum ionisation density where a maximum might be expected. The reasons for this are now well understood.
The feature was discovered as ionospheric sounders were deployed at low latitudes, largely during the years of WWII. Appleton probably discovered the effect in 1943 and reported it after the war in 1946 (see summary in the Journal of the Institution of Electrical Engineers, vol.94, 1947, pp 191-192).
[Descriptive information provided by Les Barclay]
Exent
1 Envelope
Admin. history/Biography
Les Barclay was apprenticed to E K Cole Ltd from 1950 to 1956. In 1957/58 he joined the Royal Society Antarctic Expedition studying the ionosphere. From 1960 to 1977 Les worked for Marconi Research where he was Head of the Ionospheric Propagation Section. From 1977 to 1994 he was Deputy Director of the Radio Communication Agency and was awarded an OBE for his work here.
In addition to the above Les was involved with the following international work:
1974. CCIR (International Radio Consultative Committee) of the ITU (International Telecommunications Union)
1978. Chairman of Study Group 6 (ionospheric propagation). Then continued as Chairman of Study Group 3, known as ITU- R3 up to 1977 (radio wave propagation).
Persons keyword
Level of description
file
