Sediment Transport in Estuarine Areas
The Estuarine Sedimentation Research Group of King's College and Sir John Cass College has been studying the estuaries of the Thames, Medway and Taw-Torridge. Its members, who report some of their results here, have found that the sedimentary processes in the estuaries are varied and complex.
Morphology and evolution of inshore shell ridges and mud-mounds on modern intertidal flats, near Bradwell, Essex
Abstract The morphology, genesis and changing state of an area of mud-flats adjacent to the Dengie peninsula, Essex, are described with particular reference to mobile shell accumulations and mound-shaped mud bodies. The significance and relationship of these features are discussed and conclusions are drawn on the sedimentary regime presently operating. Erosional processes are currently dominant.
Salt Marsh Erosion in Essex
DURING the course of a detailed sedimentological investigation of the Dengie peninsula mud flats in eastern Essex it has become apparent that marine erosion is currently the dominant process at work over the northern mile and a half of ground. The net result of this process is that the width of the salt marshes at the northern end, adjacent to Sales Point and St. Peter's Chapel, is diminishing. Fig. 1 illustrates the position of the salt-marsh edge in September 1953 and June 1960, during which period it is clear that the edge has retreated towards the sea-wall anything up to 300 ft. These two positions were traced from aerial photographs, but current detailed mapping on the ground has demonstrated that marsh retreat is still continuing. For example, approximately 270 yards to the south-south-east of Sales Point the salt-marsh width has decreased by 100 ft. since 1960. On the other hand, at about another 1,000 yards to the south-south-east the decrease has been negligible.