Beach Morphological Dynamics at Cocos Bay (Manzanilla), Trinidad

Auteurs-es

  • Junior Darsan Department of Geography, University of the West Indies, St. Augustine, Trinidad, West Indies

DOI :

https://doi.org/10.4138/atlgeol.2013.008

Mots-clés :

Beach Dynamics, Beach Morphology, Tidal cycles, Sedimentology, Manzanilla Beach

Résumé

The Manzanillabeach in Cocos Bay, Trinidad is a barrier beach that protects the freshwaterNariva Swamp from the marine environment of the Atlantic. The Manzanilla beachis a very dynamic system owing to the open bay morphology, and its exposure tothe Atlantic Ocean. This study evaluated thespatial and temporal morphological and sedimentological characteristics,alongside hydrodynamic conditions operating on the beach. This studyinvestigates the beach’s response to tidal cycles diurnally, from spring toneap tide, and seasonally. Data from nine sites during the period December 2005to September 2007 are analyzed. Coastal parameters such as beach profiles,littoral data and sediment samples were obtained using standardgeomorphological techniques. The beach volumetric changes that occurred overthe tidal cycles are also quantified. Results indicate that wave height andwave energy were good predictors of beach change. The study showed that erosionwas linked to rising tide and accretion to falling tide diurnally. Erosionoccurred during spring tide conditions and accretion dominated during neaptides. Seasonally more erosion occurred in the winter period (dry season) andbeach changes in the summer period (wet season) were controlled by theformation and migration of bars.

Biographie de l'auteur-e

Junior Darsan, Department of Geography, University of the West Indies, St. Augustine, Trinidad, West Indies

Principal Research OfficerOceanography and Coastal Dynamics,Institute of Marine Affairs,Hilltop Lane,Chaguaramas,Trinidad, W.I.

Téléchargements

Publié-e

2013-11-15

Comment citer

Darsan, J. (2013). Beach Morphological Dynamics at Cocos Bay (Manzanilla), Trinidad. Atlantic Geoscience, 49, 151–168. https://doi.org/10.4138/atlgeol.2013.008

Numéro

Vol. 49 (2013)

Rubrique

Articles

Licence

As of January 1, 2025, Atlantic Geoscience has adopted Creative Commons Attribution 4.0 International (CC BY 4.0)  This license requires that re-users give credit to the creator. It allows re-users to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes.

Copyright to material published in Atlantic Geoscience is normally retained by the author.  Alternate arrangements can be made on request for government employees.

Permission to use a single graphic for which the author owns copyright is considered “fair dealing” under the Canadian Copyright Act and “fair use” by the journal, and no other permission need be granted, subject to the image being appropriately cited in all reproductions. The same fair dealing/fair use policy applies to sections of text up to 100 words in length.