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A Sturzstrom-like cliff fall on the Chalk coast of Sussex, UK

By
R. B. G. Williams
R. B. G. Williams
Department of Geography, University of Sussex, Falmer, Brighton, BN1 9QN, UK
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D. A. Robinson
D. A. Robinson
Department of Geography, University of Sussex, Falmer, Brighton, BN1 9QN, UK
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U. Dornbusch
U. Dornbusch
Department of Geography, University of Sussex, Falmer, Brighton, BN1 9QN, UK
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Y. L. M. Foote
Y. L. M. Foote
Department of Geography, University of Sussex, Falmer, Brighton, BN1 9QN, UK
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C. A. Moses
C. A. Moses
Department of Geography, University of Sussex, Falmer, Brighton, BN1 9QN, UK
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P. R. Saddleton
P. R. Saddleton
Department of Geography, University of Sussex, Falmer, Brighton, BN1 9QN, UK
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Published:
January 01, 2004

Abstract

In 1914 a notable cliff fall occurred on the chalk coast of the Seven Sisters in Sussex. Debris from the fall travelled outwards across the shore platform in front of the cliff for a distance of about 75 m, forming a narrow tongue-like projection. The reason why the debris exhibited such mobility is uncertain, but it may have flowed in a similar fashion to a sturzstrom, despite its modest volume (c. 12500m3) and the equally modest height of the cliff (44-45 m). If this suggestion is correct, the minimum volume of detached rock required to trigger sturzstrom-type flow is 1-2 orders of magnitude less than is commonly claimed.

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Contents

Geological Society, London, Engineering Geology Special Publications

Coastal Chalk Cliff Instability

R. N. Mortimore
R. N. Mortimore
University of Brighton, UK
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A. Duperret
A. Duperret
Université du Havre, France
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Geological Society of London
Volume
20
ISBN electronic:
9781862393820
Publication date:
January 01, 2004

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