Empirical Equilibrium Beach Profiles Along the Eastern Tombolo of Giens

• Published in: Journal of marine science and application Vol. 17; no. 2; pp. 241 - 253
• Main Authors: Vu, Minh Tuan, Lacroix, Yves, Nguyen, Viet Thanh
• Format: Journal Article
• Language: English
• Published: Harbin Harbin Engineering University 01.06.2018; Springer Nature B.V; MEMOCS, Università Degli Studi dell'Aquila, 67100 L'Aquila, Italy%University of Transport and Communications, Hanoi 100000, Vietnam; University of Transport and Communications, Hanoi 100000, Vietnam%SEATECH, University of Toulon, 83162 La Valette-du-Var, France; SEATECH, University of Toulon, 83162 La Valette-du-Var, France
• Subjects: Anthropogenic changes; Anthropogenic factors; Bathymeters; Bathymetry; Beach erosion; Beach profiles; Beaches; Coastal erosion; Electrical Machines and Networks; Empirical analysis; Engineering; Equilibrium; Field investigations; Formulations; Geotechnical Engineering & Applied Earth Sciences; Machinery and Machine Elements; Offshore Engineering; Parameter estimation; Parameters; Power Electronics; Research Article; Wave parameters; Eastern tombolo of Giens; Logarithmic function; Equilibrium beach profile; Exponential function; Potential function, erosion, and accretion; Easterntombolo of Giens; erosion; and accretion; Potential function
• ISSN: 1671-9433; 1993-5048
• DOI: 10.1007/s11804-018-0027-3

Beaches along the eastern branch of the Giens double tombolo are subject to coastal erosion. Prediction of the behavior of the beach profile configuration in response to natural and anthropogenic changes using the concept of equilibrium beach profile (EBP) could be useful in finding the most suitable measure to address the erosion problem. Field investigation data of 11 beaches along the eastern tombolo were supplied for this study, and a nonlinear fitting technique was applied to estimate the best parameter values of seven empirical formulations of the relevant EBP. All of the observed beach profiles could be described by a single function, but a single EBP was inadequate to represent all of the beach profiles observed. The variation found could be explained in terms of longshore variation of bathymetry, sediment size, and wave parameters. Analysis of the validity of the EBPs revealed that a representative EBP of each beach is governed by different equilibrium parameters.