Ulster University Logo

Ulster Institutional Repository

Surficial beach structures formed by wave-generated foam

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Cooper, Andrew and Jackson, Derek (2001) Surficial beach structures formed by wave-generated foam. JOURNAL OF GEOLOGY, 109 (6). pp. 780-788. [Journal article]

Full text not available from this repository.

Abstract

In this article, we report on the modification of an intertidal beach surface by processes connected with the generation and redistribution of foam during a coastal storm. Foam generated by breaking waves initially accumulated at the swash line but was reworked across the beach by onshore winds. A distinctive suite of sedimentary structures, capable of preservation in the geological record, was produced that displayed a distinctive cross-shore arrangement from the zone of foam generation to the zone of foam deposition and also varied according to tidal level and wind speed. Foam marks with wind-transverse linear elements characterized the upper sections of the beach. Other distinctive features formed during this storm include foam swash lines, wind-parallel foam stripes, mud drapes, and sand drapes on the upper beach and supratidal zone. These features formed a surface veneer on a high-energy dissipative beach; their formation began during a high tide and continued during the subsequent falling tide. During the later stages of the falling tide, still-forming foam-driven features were in places being modified by (and themselves modifying) surface features characteristic of late-stage emergence runoff (e.g., double-crested ripples, rill marks, microdeltas).

Item Type:Journal article
Faculties and Schools:Faculty of Life and Health Sciences
Faculty of Life and Health Sciences > School of Environmental Sciences
Research Institutes and Groups:Environmental Sciences Research Institute
Environmental Sciences Research Institute > Coastal Systems
ID Code:1406
Deposited By:Professor Andrew Cooper
Deposited On:26 Nov 2009 12:19
Last Modified:15 Jun 2011 11:17

Repository Staff Only: item control page