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Water 2018, 10(12), 1806; https://doi.org/10.3390/w10121806

Field and Numerical Study of Resistance and Resilience on a Sea Breeze Dominated Beach in Yucatan (Mexico)

1
Laboratorio de Ingeniería y Procesos Costeros, Instituto de Ingeniería, Universidad Nacional Autónoma de México, Sisal, Yucatán 97835, Mexico
2
Laboratorio Nacional de Resiliencia Costera, Laboratorios Nacionales CONACYT, Sisal, Yucatán 97835, Mexico
3
Department of Engineering, University of Salento, 73100 Lecce, Italy
4
Department of Engineering, University of Calabria, 87036 Arcavacata di Rende, Italy
5
Department of Earth and Environmental Sciences, University of West Florida, Pensacola, FL 32514, USA
6
Departamento de Ingeniería Civil, Universidad Autónoma del Carmen, Cd. del Carmen, Campeche 24180, Mexico
*
Author to whom correspondence should be addressed.
Received: 3 November 2018 / Revised: 29 November 2018 / Accepted: 1 December 2018 / Published: 8 December 2018
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Abstract

The understanding of the beach capability to resist and recover from a disturbance is of paramount importance in coastal engineering. However, few efforts have been devoted to quantifying beach resilience. The present work aims to investigate the shoreline resistance and resilience, associated to a transient disturbance, on a sandy beach. A temporary groin was deployed for 24 h on a micro-tidal sea-breeze dominated beach to induce a shoreline perturbation. Morphological changes were measured by means of beach surveys to estimate the beach perturbation and the further beach recovery after structure removal. An Empirical Orthogonal Function (EOF) analysis of the shoreline position suggests that the first EOF mode describes the spatial-temporal evolution of the shoreline owing to the groin deployment/removal. A new one-line numerical model of beach evolution is calibrated with the field surveys, reproducing both the sediment impoundment and subsequent beach recovery after the structure removal. Thus, a parametric numerical study is conducted to quantify resistance and resilience. Numerical results suggest that beach resistance associated to the presence of a structure decreases with increasing alongshore sediment transport potential, whereas resilience after structure removal is positively correlated with the alongshore diffusivity. View Full-Text
Keywords: beach resilience; beach resistance; temporary groin; sea breezes; resilience index; GSb model; Yucatan peninsula beach resilience; beach resistance; temporary groin; sea breezes; resilience index; GSb model; Yucatan peninsula
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Medellín, G.; Torres-Freyermuth, A.; Tomasicchio, G.R.; Francone, A.; Tereszkiewicz, P.A.; Lusito, L.; Palemón-Arcos, L.; López, J. Field and Numerical Study of Resistance and Resilience on a Sea Breeze Dominated Beach in Yucatan (Mexico). Water 2018, 10, 1806.

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