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Electronic components and apparatus for use in polar field operations*

Published online by Cambridge University Press:  27 October 2009

K. Nottarp ,
H. Serson  and
G. W. A. Dummer
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Extract

During the 1959 activities of the International Glaciological Expedition to Greenland, tellurometer measurements of the geodetic traverse over the ice sheet were found to contain systematic errors of the order of 1 part in 105 in distance measurement, and there was a big loss in instrument range. The origin of these difficulties may lie in the large temperature gradient in the air close to the snow surface, or in the scattering of the signal from the rough surface, or in the propagation characteristics in the dielectric boundary layer between snow and air (Nottarp, 1962). We are concerned here with the practical solution to the difficulty—the use of a high antenna mounting—and with other modifications made to the instruments for use on the Ross Ice Shelf Survey, 1962–63.

Type
Articles
Information
Polar Record , Volume 13 , Issue 82 , January 1966 , pp. 37 - 43
Copyright
Copyright © Cambridge University Press 1966

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References

Evans, S. 1965. Dielectric properties of ice and snow. Journal of Glaciology, Vol 5, No 42, p 773–92.CrossRefGoogle Scholar
Harper, C. A. 1961. Electronic packaging with resins. McGraw Hill.Google Scholar
Landmark, B. 1964. Arctic communications. Proceedings of the Eighth Meeting of the AGARD Ionospheric Research Committee, Athens, July 1963. Oxford, Pergamon Press.Google Scholar
Mindlin, R. E. 1945. Dynamics of package cushioning. Bell System Technical Journal, Vol 24.CrossRefGoogle Scholar
Nottarp, K. 1962. Bemerkungen zur Wellenausbreitung bei Tellurometermessungen. Allgemeine Vermessungsnachrichten, Vol 69, No 5, p 159–61.Google Scholar
Nottarp, K. 1964. Frequenzkontroll und Prüfgerat für Allgemeine Vermessungsnachrichten, Vol 71, No 3, p 104–06.Google Scholar
Saxton, J. A. 1950. Reflection coefficient of snow and ice at VHF, Wireless Engineer, Vol 27, No 316, p 17–20.Google Scholar
Schuler, S. C. 1957. Equipment design and methods of shock protection. Journal of the Royal Aeronautical Society. Vol 61, p 335.CrossRefGoogle Scholar
Sebastian, G. Y. 1963. Department of Transport proceedings for the design of pavement facilities and foundation structures in permafrost subgrade soil areas. Proceedings of the First Canadian Conference on Permafrost, National Research Council, Canada, Technical Memorandum, No 76, p 167–206.Google Scholar