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| Sosa, M.; Guerra, R.; Rivas Rodríguez, L.. |
| Se utiliza la información de perfiles de playa en cuatro localidades de las Playas del Este obtenidos en los últimos 27 años, para describir la tendencia de la playa a mediano plazo. A partir de datos de posición de la línea de costa y de volúmenes de arena de la playa emergida se estableció la tasa de cambio de la playa utilizando la regresión lineal simple. Los resultados confirman la tendencia erosiva de un sector de la playa de Guanabo. La tasa anual de retroceso de la línea de costa ha sido de -0.97 m/año que ha establecido un cambio total de - 26 ±7 m. La reducción de los volúmenes de arena ha sido de -28 ± 8 m3/m, a un ritmo de -1.04 m3/m/año. En la playa de Santa María, la línea de costa en algunas localidades ha experimentado retroceso y en otras... |
| Tipo: Journal Contribution |
Palavras-chave: Beach morphology; Beach erosion; Dunes; Dunes; Http://aims.fao.org/aos/agrovoc/c_2410. |
| Ano: 2010 |
URL: http://hdl.handle.net/1834/3664 |
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| Didier, David; Bernatchez, Pascal; Augereau, Emmanuel; Caulet, Charles; Dumont, Dany; Bismuth, Eliott; Cormier, Louis; Floc'H, France; Delacourt, Christophe. |
| Increasingly used shore-based video stations enable a high spatiotemporal frequency analysis of shoreline migration. Shoreline detection techniques combined with hydrodynamic conditions enable the creation of digital elevation models (DEMs). However, shoreline elevations are often estimated based on nearshore process empirical equations leading to uncertainties in video-based topography. To achieve high DEM correspondence between both techniques, we assessed video-derived DEMs against LiDAR surveys during low energy conditions. A newly installed video system on a tidal flat in the St. Lawrence Estuary, Atlantic Canada, served as a test case. Shorelines were automatically detected from time-averaged (TIMEX) images using color ratios in low energy conditions... |
| Tipo: Text |
Palavras-chave: Video monitoring; Shoreline detection; Beach morphology; Mobile terrestrial LiDAR; Erosion; Atlantic Canada. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00638/75022/75656.pdf |
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| Ibe, A.C.; Inegbedion, L.E.; Egberongbe, F.A.O.; Orupabo, S.. |
| The dynamic state of the Nigerian shoreline, dominantly erosional has been a source of concern to various state and Federal Governments particularly in the past few decades because of the enormous adverse socio-economic implementation it engenders. An ability to predict the future behavioural patterns of the Nigerian shoreline affords an invaluable scientific input into long term and large scale managerial planning for the Nigerian coastal zone. This paper documents a first attempt at formulating a mathematical model for beach states in Nigeria using Victoria bar beach as a case study. A controlled section of the beach was selected while measurements of some of the variable characteristics were carried out periodically. While it is ultimately desirable to... |
| Tipo: Report |
Palavras-chave: Beach erosion; Beach morphology. |
| Ano: 1989 |
URL: http://hdl.handle.net/1834/2434 |
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| Sosa Fernández, M.; Rivas Rodríguez, L.. |
| The results of the application of the formula of Kawamura (1951) to in situ meteorological data in order to forecast the sand transport rate due to wind action are described in this paper. A new episode of dune formation started in the 1980's in these beaches, and more recently they have been affected by aeolian erosion since the beginning of the destruction of foredune vegetation due to the increase in tourist activities in the area. Shear velocity (U*t) values on the surface were determined starting from wind speed vertical profiles. Critical shear velocity values to start the sand movement were also determined, taking into account the grain size variations of the beach material along the coast. And finally, transport rates are calculated in each case. A... |
| Tipo: Journal Contribution |
Palavras-chave: Dunes; Beach morphology; Sand structures; Eolian transport; Dunes; Http://aims.fao.org/aos/agrovoc/c_2410. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/3332 |
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| Martell Dubois, R.; Hernández Valdés, K.; Caballero Camejo, V.; Henríquez Andrade, J. D.. |
| Estero Ciego beach is located in the tourist area in Holguín province, northeastern coast of Cuba. At present, the beach suffers an erosion process, being observed the appearance of extensive rocky surfaces in the eastern half of the beach as well as a marked deficit of sand in the coast. The objective of this study is to define the engineering solutions required to improve the aesthetic and use conditions of the beach. As main action it is proposed the artificial nourishment of sand, since it constitutes a solution that creates the aesthetic conditions rapidly. As a complement to guarantee the beach stability for a longer period of time, it is also intended to reduce part of the rocky surface that presently exists on the coastline in the eastern half of... |
| Tipo: Journal Contribution |
Palavras-chave: Beach profiles; Beach morphology; Beach erosion; Coastal engineering. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/3338 |
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