Journal ArticleDOI
Impacts of Dredging on Shoreline Change
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TLDR
In this paper, a method is described for estimating both direct and indirect effects of dredging on shoreline change, where the direct effect results from infilling of the dredged pit via cross-shore sediment transport and is addressed statistically, assuming that the beach profile is in some arbitrary equilibrium shape.Abstract:
Nearshore dredging for construction aggregate or beach nourishment can result in a perturbation of natural littoral processes, changes in wave transformation patterns, and a net loss of sand from the littoral system. A method is described for estimating both direct and indirect effects of dredging on shoreline change. The direct effect results from infilling of the dredged pit via cross-shore sediment transport and is addressed statistically, assuming that the beach profile is in some arbitrary equilibrium shape. The indirect effect arises from project-induced wave transformation, which alters longshore sediment transport patterns, and is described using both spectral and monochromatic, numerical wave transformation models to provide input to a one-line model for shoreline change. Infilling of the pit is neglected when estimating the indirect effect, providing a worst-case estimate of the indirect effect. The methodology is applied to a site on the Turkish Black Sea coast, using hindcast wave data. The influences of pit location and geometry are investigated systematically, and recommendations regarding optimum pit dimensions and locations are made.read more
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Book ChapterDOI
Physical Ecosystem Engineers and the Functioning of Estuaries and Coasts
Jorge L. Gutiérrez,Clive G. Jones,James E. Byers,K. K. Arkema,K. Berkenbusch,John A. Commito,Carlos M. Duarte,S. D. Hacker,John G. Lambrinos,Iris E. Hendriks,P. J. Hogarth,Maria Gabriela Palomo,Christian Wild +12 more
TL;DR: In this paper, the authors use a general framework for physical ecosystem engineering to illustrate how these organisms can exert control on sedimentary processes, coastal protection, and habitat availability to other organisms.
Journal ArticleDOI
Application of remote sensing video systems to coastline management problems
Aart Kroon,Mark Davidson,Stefan Aarninkhof,Renata Archetti,Clara Armaroli,Mauricio González,S. Medri,Andrés F. Osorio,Andrés F. Osorio,Troels Aagaard,Robert A. Holman,Ruud Spanhoff +11 more
TL;DR: In this paper, video-derived parameters (coastal state indicators or CSIs) are developed which facilitate the measurement of the shoreline evolution (erosion/accretion) and response to storms, seasonal cycles and anthropogenic interventions like beach/shoreface nourishment and dredging.
Journal ArticleDOI
Four-year performance and associated controlling factors of several beach nourishment projects along three adjacent barrier islands, west-central Florida, USA
Tiffany M. Roberts,Ping Wang +1 more
TL;DR: In this article, the authors quantify the performance of several beach nourishment projects on three adjacent barrier islands located in west-central Florida, and a total of 5200 beach and nearshore profiles spaced at 300m were surveyed monthly to bi-monthly from 2006 to 2010.
Journal ArticleDOI
Multi-decadal assessment of shoreline changes using geospatial tools and automatic computation in Kenitra coast, Morocco
Mounir Hakkou,Mehdi Maanan,Tarik Belrhaba,Khalid El Khalidi,Driss El Ouai,Aïcha Benmohammadi +5 more
TL;DR: In this article, the authors investigated a long-term process of shoreline change along the coastal stretch of the Kenitra coast using geospatial techniques and automatic calculations and found that the maximum recorded coastal erosion/accretion kinematics are +47m/yr, −32m/r, and −197m/hr for Chlihat, Mehdia and Sidi Boughaba beaches.
Journal ArticleDOI
The impact of Klaipėda Port entrance channel dredging on the dynamics of coastal zone, Lithuania
TL;DR: In the case of the Port of Klaipąžėda in Lithuania, an analysis of cartographic material collected between 1835 and 2017, and on field data (bathymetric surveys and cross-shore profile levelling), changes to the coastal zone in the area nearest to the port were evaluated.
References
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Journal ArticleDOI
A third-generation wave model for coastal regions: 1. Model description and validation
TL;DR: In this article, a third-generation numerical wave model to compute random, short-crested waves in coastal regions with shallow water and ambient currents (Simulating Waves Nearshore (SWAN)) has been developed, implemented, and validated.
Book
Dynamics and Modelling of Ocean Waves
G. J. Komen,Luigi Cavaleri,Mark A. Donelan,Klaus Hasselmann,Susanne Hasselmann,Peter A. E. M. Janssen +5 more
TL;DR: The Wave Modelling Group (WAM) model as mentioned in this paper is based on a detailed physical description of air/sea interactions and is widely used for wave forecasting for meteorological and oceanographic purposes.
Journal ArticleDOI
A parabolic equation for the combined refraction-diffraction of Stokes waves by mildly varying topography
TL;DR: In this article, a parabolic equation governing the leading-order amplitude for a forward-scattered Stokes wave is derived using a multiple-scale perturbation method, and the connection between the linearized version and a previously derived approximation of the linear mild slope equation is investigated.
Journal ArticleDOI
Propagation of obliquely incident water waves over a trench
TL;DR: In this paper, the diffraction of obliquely incident surface waves by an asymmetric trench is investigated using linearized potential theory and a numerical solution is constructed by matching particular solutions for each subregion of constant depth along vertical boundaries; the resulting matrix equation is solved numerically.