Back to Search
Start Over
Mesoscale shoreface morphodynamics on a high-energy regressive coast
- Source :
-
Continental Shelf Research . Jun2009, Vol. 29 Issue 11/12, p1361-1372. 12p. - Publication Year :
- 2009
-
Abstract
- Abstract: A 2-year investigation into shoreface morphodynamic behaviour off a high-energy headland-embayment coast in Northern Ireland reveals important process–response mechanisms that cannot be explained solely by existing conceptual models. A comparison of 14 sequential bathymetric surveys, from 1 to 24m water depth, shows that the Portstewart shoreface is in equilibrium with modal to high-energy conditions; significant morphologic change is generally associated with summer and/or fair-weather conditions. Additionally, antecedent morphology appears to be a primary control on subsequent behaviour; shoreface areas that had accreted in the previous survey period were more likely to erode. Also, the high-energy shoreface and beach appears to be in a state of accretion over the survey period, which is consistent with a falling late Holocene relative sea-level, a linear and dissipative shoreface profile and an abundance of sand in the coastal system. [Copyright &y& Elsevier]
- Subjects :
- *SEDIMENT transport
*MINERAL aggregates
*WATER depth
*SURVEYS
Subjects
Details
- Language :
- English
- ISSN :
- 02784343
- Volume :
- 29
- Issue :
- 11/12
- Database :
- Academic Search Index
- Journal :
- Continental Shelf Research
- Publication Type :
- Academic Journal
- Accession number :
- 41243607
- Full Text :
- https://doi.org/10.1016/j.csr.2009.01.017