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ESTUDO DAS INTERVENÇÕES NA COSTA DA CAPARICA Costa da Caparica Coastal Protection Works

Title
ESTUDO DAS INTERVENÇÕES NA COSTA DA CAPARICA Costa da Caparica Coastal Protection Works
Type
Article in International Conference Proceedings Book
Year
2006
Authors
Francisco Taveira Pinto
(Author)
FEUP
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Joaquim Barbosa
(Author)
FEUP
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Costa João
(Author)
Other
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António Rodrigues
(Author)
Other
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Conference proceedings National
Pages: 27-35
1as Jornadas de Hidráulica, Recursos Hídricos e Ambiente
FEUP, Porto, 30 Outubro
Scientific classification
CORDIS: Technological sciences
Other information
Resumo (PT): Desde 1970 importantes transformações fisiográficas, nomeadamente, o recuo da linha de costa têm ocorrido no sector entre a Cova do Vapor e a Costa da Caparica, localizado na margem sul da embocadura do rio Tejo. Diversas obras de defesa costeira foram construídas entre o final da década de 50 e início da década de 70, nomeadamente o campo de esporões da Costa da Caparica. Após a construção das obras e até ao ano 2000, a linha de costa manteve-se relativamente estável, embora com perda contínua de sedimentos entre os esporões e com degradação estrutural das obras de defesa. Após o ano 2000, as praias e dunas entre a Cova do Vapor e a Costa da Caparica que tinham permanecido relativamente estáveis foram seriamente afectadas, tendo sido realizadas intervenções de emergência durante o Inverno de 2002/2003 e 2006/2007. Esta zona costeira está submetida a elevadas pressões turísticas e urbanas. Diversas opções de protecção da zona costeira para a Costa de Caparica (foram propostas e discutidas). Neste artigo será ilustrada a problemática local, as intervenções previstas, as já concretizadas nos últimos dois anos (a primeira fase) e a comparação de levantamentos batimétricos efectuados.
Abstract (EN): Since 1970 that important physiographic transformations and coastline retreat has been occurred in between Cova do Vapor and Costa da Caparica, located in the south bank of the river Tagus mouth. Several coastal protection works had been constructed between the end of the 50’s and beginning of the 70’s, with special relevance for the groin field of Costa da Caparica. After the construction of the groin field the coastline remained more or less stable till 2000, but there was a continuous loss of sand between groins. After 2000, beaches and dunes between Cova do Vapor and Costa da Caparica groins field have been seriously affected, and emergency works have been carried out during 2002/2003 and 2006/2007 winters. This coastal zone suffers important tourist and urban pressures. In this way with management and planning issues, several structural options to protect the Costa da Caparica were proposed and discussed. The first phase was already carried out. This article presents and discusses the selected interventions, the constructions phases carried out in the last two years as well a bathymetric survey comparison.
Language: Portuguese
Type (Professor's evaluation): Scientific
Contact: vgomes@fe.up.pt
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