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Waves Off Land's End

Published online by Cambridge University Press:  18 January 2010

L. Draper and
H. S. Fricker
L. Draper
Affiliation:
National Institute of Oceanography
H. S. Fricker
Affiliation:
National Institute of Oceanography
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Extract

Since January 1962, waves have been recorded by a shipborne wave recorder (Tucker, 1956) on the Sevenstones light-vessel which is stationed about 20 miles south-west of Land's End in about 200 ft. of water. Records were taken at three-hourly intervals and were mostly of 12 minutes’ duration. The analysis presented here is based on 2920 records taken in the first year of operation; the method of analysis which has been used is that described by Tucker (1961). This gives for each record:

(a) H1 = The sum of the distances of the highest crest and the lowest trough from the mean water level.

(b) Tz = The mean zero-crossing period.

(c) Tc = The mean crest period.

Information

Type
Research Article
Information
The Journal of Navigation , Volume 18 , Issue 2 , April 1965, pp. 180 - 187
Copyright
Copyright © The Royal Institute of Navigation 1965

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References

Tucker, M. J. (1956). A shipborne wave recorder, Trans. Inst. nav. Archit., 98, 236.Google Scholar
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Draper, L. (1963). Derivation of a ‘design wave’ from instrumental records of sea waves, Proc. Instn. civ. Engrs., 26, 291.Google Scholar
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