Freshwater Biological Association, The Ferry House, Far Sawrey, Ambleside, U.K.
Temporal and spatial variation in intertidal sedimentation rates
Article first published online: 14 JUN 2006
Volume 29, Issue 1, pages 17–23, February 1982
How to Cite
CARLING, P. A. (1982), Temporal and spatial variation in intertidal sedimentation rates. Sedimentology, 29: 17–23. doi: 10.1111/j.1365-3091.1982.tb01705.x
- Issue published online: 14 JUN 2006
- Article first published online: 14 JUN 2006
- Manuscript received 6 September 1980; revision received 16 January 1981
Sediment deposition and erosion rates are reported for an intertidal zone in the Burry Inlet, South Wales.
Measured deposition rates over the salt marsh are compared with deposition rates calculated from observed suspended sediment concentrations. Notably, it is concluded that residual turbulence at slack water should not be discounted when calculating deposition rates.
Grain-size distributions of suspended sediments over the marsh surface, during flood and ebb tides, contrast with the grain-size distribution of deposited marsh sediments, the latter being significantly coarser. These data in conjunction with mass budget calculations are used to relate total annual deposition and sediment supply by tidal action during settled meteorological periods. The analysis suggests that episodic storm-induced sediment transport is probably an important mechanism for introducing coarse sediment on to the marsh surface.
Finally, it is noted that seasonal reworking of the sandy non-cohesive sediments may be related to variations in the intensity of wave-breaking throughout the year.