Hostname: page-component-6bf8c574d5-qdpjg Total loading time: 0 Render date: 2025-02-15T16:15:51.006Z Has data issue: false hasContentIssue false
  • English
  • Français

The Formation Of The Shambles And Other Banks By Tidal Stirring Of The Seas

Published online by Cambridge University Press:  11 May 2009

R. D. Pingree
R. D. Pingree*
Affiliation:
Institute of Oceanographic Sciences, Wormley, Surrey
*
*Present address: The Laboratory, Marine Biological Association, Citadel Hill, Plymouth.
Get access Rights & Permissions [Opens in a new window]

Extract

It is well known that if a beaker of water, to which a little sand has been previously added, is stirred, then the sand moves along the bottom and accumulates in the centre. The result is the same whether the beaker is stirred clockwise or anticlockwise. It is perhaps less obvious, but equally true, that if the beaker is placed on a rotating table, then stirring clockwise and anticlockwise produces different effects. Any stirring rate in the sense of rotation may produce a concentration of sand towards the centre (better effects may be observed with less dense material – tea leaves for example). However, if the stirring is against the rate of rotation, then it is necessary to exceed the rotation rate before sand will accumulate in the centre of the beaker. In an analogous manner, ‘spinup’ of the table produces dispersion of bottom material, whereas spin-down results in a concentration of material towards the centre of the beaker.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 58 , Issue 1 , February 1978 , pp. 211 - 226
Copyright
Copyright © Marine Biological Association of the United Kingdom 1978

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Caston, V. N. D. & Stride, A. M., 1970. Tidal sand movement between some linear sand banks in the North Sea off northeast Norfolk. Marine Geology, 9, M38.CrossRefGoogle Scholar
Hails, J. R., 1975. Sediment distribution and quaternary history. Journal of the Geological Society of London, 131, 19–37.CrossRefGoogle Scholar
Hunter, J. R., 1975. A note on the quadratic friction in the presence of tides. Estuarine and Coastal Marine Science, 3, 473–475.CrossRefGoogle Scholar
Pingree, R. D. & Maddock, L., 1977 a. Tidal residuals in the English Channel. Journal of the Marine Biological Association of the United Kingdom, 57, 339–354.CrossRefGoogle Scholar
Pingree, R. D. & Maddock, L., 1977 b. Tidal eddies and coastal discharge. Journal of the Marine Biological Association of the United Kingdom, 57, 869–875.CrossRefGoogle Scholar
Saunders, P. M., 1977. Average drag in an oscillatory flow. Deep-Sea Research, 24, 381–384.CrossRefGoogle Scholar
Shields, A., 1936. Anwendung der Aehnlichkeitsmechanik und der Turbulenzforschung auf die Geschiebebewegung. Mitteilungen der Preubischen Versuchsanstalt für Wasserbau und Schiffbau, 26, 5–26.Google Scholar