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A continuous profile of sea ice and freshwater ice thickness by impulse radar

Published online by Cambridge University Press:  27 October 2009

K. J. Campbell  and
A. S. Orange
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Extract

For several years. Geophysical Survey Systems, Inc has been using an impulse radar system as a shallow subsurface exploration tool for engineering applications. Recently this system has been applied to the measurement of ice thicknesses both on sea-water and fresh-water ice. In the course of a feasibility study performed in December 1972, thebasic operating parameters and limitations of the tool when operated on ice were determined. Following the feasibility study, operational surveys were performed totalling approximately 11 crew-months and covering in excess of 1 500 km of survey route at several locations in the Canadian Arctic. The technique is known as Electromagnetic Subsurface Profiling (ESP), and it can be considered the electromagnetic equivalent of the single-trace acoustic profiling methods used for marine subbottom profiling. In practice, ice-thickness profiling is done by towing a sled-mounted antenna behind a tracked vehicle containing the impulse system (Fig 1). Real-time profile data are displayed graphically on a strip-chart recorder. The data may also be recorded on magnetic tape for later processing and playback.

Type
Articles
Information
Polar Record , Volume 17 , Issue 106 , January 1974 , pp. 31 - 41
Copyright
Copyright © Cambridge University Press 1974

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References

Assur, A. 1958. Composition of sea ice and its tensile strength. In: Arctic sea ice, conference held at Easton, Maryland, February 24–27, 1958. Washington, DC, National Academy of Sciences, National Research Council, Publication 598, p 106–38.Google Scholar
Evans, S. and Smith, B.M.E. 1969. A radio echo equipment for depth sounding in polar ice sheets. Journal of Scientific Instruments (Journal of Physics E), Series 2, Vol 2, p 131–36.CrossRefGoogle Scholar
Evans, S. and others. 1972. Radio-echo sounding in Antarctica, 1971–72. By Evans, S.Drewry, D. J. and Robin, G. de Q.. Polar Record, Vol 16, No 101, p 207–12.CrossRefGoogle Scholar
Hoekstra, P. and Capillino, P. 1971. Dielectric properties of sea and sodium chloride ice at UHF and microwave frequencies. Journal ofGeophysical Research. Vol 76, No 20, p 4922–31.CrossRefGoogle Scholar
Kraichmann, M. B. 1970. Handbook of electromagnetic propagation in conducting media. Washington, DC, US Government Printing Office (Document NAVMAT P.2302).Google Scholar
Peyton, H. R. 1963. Some mechanical properties of sea ice. In: Kingery, D. W., ed. Ice and snow; properties, processes, and applications. Cambridge, MIT Press, p 107–13.Google Scholar
Pounder, E. R. 1965. The physics of ice. Oxford, Pergamon Press.Google Scholar