Mathematical models used for the understanding of coastal seabed morphology play a key role in beach nourishment projects. These projects have become the fundamental strategy for coastal maintenance during the last few years. Accordingly, the accuracy of these models is vital to optimize the costs of coastal regeneration projects. Planning of such interventions requires methodologies that do not generate uncertainties in their interpretation. A study and comparison of mathematical simulation models of the coastline is carried out in this paper, as well as elements that are part of the model that are a source of uncertainty. The Equilibrium Profile (EP) and the offshore limit corresponding A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPTto the Depth of Closure (DoC) have been analysed taking into account different timescale ranges. The results have thus been compared using data sets from three different periods which are identified as present, past and future. Accuracy in data collection for the beach profiles and the definition of the median grain size calculation using collected samples are the two main factors that have been taken into account in this paper. These data can generate high uncertainties and can produce a lack of accuracy in nourishment projects. Together they can generate excessive costs due to possible excess or shortage of sand used for the nourishment.The main goal of this paper is the development of a new methodology to increase the accuracy of the existing equilibrium beach profile models, providing an improvement to the inputs used in such models and in the fitting of the formulae used to obtain seabed shape. This new methodology has been applied and tested on Valencia's beaches.
Bahía Norte, located in Alicante, is an artificial coastal area that suffers from erosion, which disturbs the environment, the life and the economy of surrounding areas. In order to mitigate the erosion problem, a solution that provides coastal improvements and allows users to enjoy the structure is proposed. This solution develops artificial surfing reefs as a part of coastal protection management. An artificial surfing reef is not a new concept. However, it is an unknown and innovative idea in the Mediterranean Sea. Given that artificial surfing reefs are a reliable solution for the erosion suffered by the Mediterranean coastline. The project has five aims: controlling the sand loss, providing a recreational area for surfing, improving the security of the swimmers, revitalizing a depressed area and avoiding the visual noise of common structures of coastal defense. Artificial surfing reefs shape new driven current cells that cause an accretion in the shoreline by changing the pre-existing sea currents. Moreover, in order to improve surfing conditions, they fit the shape and height of the incoming waves. This research achieves an alteration of 420 meters of shore with a maximum salient formation of 50 meters, which fits perfectly to the situation of the artificial beach closed by groins. This research has also proved the importance of developing a careful study for the emplacement for this kind of reef being the distance from the structure to the shoreline one of the most determinant factors. It suggests that placing the artificial reef at 200 meters from the coast would be an adequate option.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.