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| Registros recuperados: 11 | |
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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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| Beach nourishment is the process of dumping sand on the beach to increase the width or the height of the beach. For along time this had been the most widely used on the beach. Table shows the many beach nourishment programs that have been implemented on the beach. While beach nourishment is regarded as soft and environmentally friendly method of combating coastal erosion it is a stopgap temporary measure. It requires periodic implementation. The return period of the nourishment programs since 1982 averages two years. This option is only a stopgap measure and not permanent. Hence this option cannot be viewed as a lasting solution to the problem. |
| Tipo: Working Paper |
Palavras-chave: Beach erosion. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/551 |
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| Awosika, L.F.. |
| The Bar Beach on Victoria Island has been the scene of very active erosion in the past since the construction of the east and west moles between 1908 and 1912. The moles were constructed to protect the dredged deep (Commodore Channel) entrance into the Lagos harbor from intense wave action and the silting up of the channel. The construction of breakwaters interrupted the long-shore transport of sand from west of the west mole to the east along the shoreline. The interference has resulted in the trapping of about 0.5 and 0.75 million cubic meters of sand per year behind the west mole leading to an accreting Lighthouse beach on the western side of the harbour entrance. However, the Bar beach on the down-drift side is starved of sediments. Studies carried out... |
| Tipo: Report |
Palavras-chave: Beach erosion. |
| Ano: 2002 |
URL: http://hdl.handle.net/1834/540 |
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| Hernández Valdés, K.; Pérez Villavicienzo, O.; Nadal Llosa, M.; Rondón Yero, H.; González, N.. |
| Para estabilizar el sector de playa en el extremo este de Cayo Libertad, Punta Hicacos, se propone la construcción de un espigón con una longitud de 290 m y un ancho de corona de 8 m, compuesto por un núcleo de rocas de 3 m de ancho y por dos capas de escollera de recubrimiento con un peso de 3.4 ton para el tronco de la obra y 3.6 ton para el morro. La cota de coronación será +1.20 m, nivel en el que dará terminación una losa de hormigón de resistencia Rbk: 300 kg/cm2. La obra se integrará al uso recreativo de la zona a través de un paso peatonal que permitirá la contemplación del paisaje y la pesca a cordel. El espigón servirá de contención lateral a la arena que es transportada por efecto de la deriva litoral hacia el Canal de Buba, contribuyendo a... |
| Tipo: Journal Contribution |
Palavras-chave: Beach erosion. |
| Ano: 2009 |
URL: http://hdl.handle.net/1834/3419 |
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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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| Rivas, Lourdes; Salazar, Hermes; Peña, Leonel; Núñez, César; Felipe, Miguel. |
| La playa La Puntilla, ubicada en el poblado habanero de Santa Fe, constituye un importante elemento recreacional de uso público, que durante décadas ha experimentado un acelerado proceso de deterioro. Con el objetivo de conocer cuál es el comportamiento actual de la misma, se llevó a cabo un monitoreo con frecuencia trimestral durante los años 2010 y 2011. En cada uno de ellos se realizó un muestreo sedimentológico, colectándose un total de 21 muestras de arena. Además se realizaron nivelaciones en tres perfiles topográficos y mediciones de la línea de costa. Los resultados alcanzados permiten comprobar que el sector más estable de toda la playa es el este, mostrando las menores variaciones morfológicas y del diámetro medio del grano. El balance de los... |
| Tipo: Journal Contribution |
Palavras-chave: Environmental monitoring; Sediments; Beach erosion; Beach profiles; Environmental monitoring; Sediment; Beaches. |
| Ano: 2012 |
URL: http://hdl.handle.net/1834/4568 |
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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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| Nyandwi, N.. |
| An assessment of the coastal erosion problems along selected stretches around the Zanzibar coastline as well as along the mainland coastline of Tanzania, indicated a significant contribution to the problem by human activities. During the study, 56 eroding beaches were examined to assess the extent of anthropogenic activities to the problem. Human-induced erosion was observed at nine sites. By interfering with natural processes, human activities either initiated erosion or enhanced its rate. The activities identified fall into three categories namely, removal of beach material, removal of the protection against wave battering and obstruction of sediment supply. |
| Tipo: Proceedings Paper |
Palavras-chave: Beach erosion. |
| Ano: 2001 |
URL: http://hdl.handle.net/1834/821 |
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| Rossi, G.. |
| Ce travail donne les résultats des études menées en nature et sur modèle réduit des conditioris dans lesquelles on peut utiliser un banc de grès de plage comme protection naturelle d'une côte en recul. Les résultats du modèle, conformes aux observations en nature, indiquent que, dans les conditions hydrologiques du golfe du Bénin, une dalle de grès de plage stabilise progressivement le recul du trait de côte lorsque sa largeur est supérieure à 10 m et sa hauteur au-dessus du zéro hydrographique au moins égale à 1 ni. Plus la largeur est grande et la hauteur au-dessus du zéro hydrographique importante, plus la vitesse de stabilisation est. rapide. Ainsi, avec une dalle à + 1,50, le recul s'arrête en trois ans. Du point de vue géotechnique, pour être... |
| Tipo: Journal Contribution |
Palavras-chave: Beach erosion. |
| Ano: 1987 |
URL: http://hdl.handle.net/1834/1227 |
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| Registros recuperados: 11 | |
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