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Avaliação do perigo de inundação de áreas urbanas expostas à subida do nível do mar em Portugal Continental
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Resumo(s)
Portugal continental, durante a segunda metade do século XX, verificou uma
procura generalizada pelo litoral, e um rápido e desordenado crescimento
urbano. Foram artificializadas áreas perigosas face a inundações costeiras,
expondo a população a riscos costeiros, perdurando até ao presente. Os
resultados da dissertação sugerem que Portugal continental detém 62 km2 de
áreas perigosas a inundações episódicas costeiras, que podem amplificar-se,
por influência da subida do nível do mar, em 24 km2
, até 2100, dos quais 6,6 km2
são territórios artificializados. Foram identificados níveis de prioridade de
adaptação municipal face à perigosidade e à exposição urbana. Atualmente, os
municípios de prioridade alta face ao perigo são Vagos, Faro, Olhão e Tavira,
sendo que no ano de 2040 incluir-se-ão nesta prioridade os municípios de Ovar
e Vila Real de Santo António. Os atuais municípios de prioridade alta face à
exposição urbana são a Póvoa de Varzim, Vila do Conde, Matosinhos e
Grândola. Vila Nova de Gaia e Loulé serão incluídos em 2040 e 2070,
respetivamente. As estratégias de adaptação identificadas consistem no
investimento em soluções baseadas em ecossistemas, recuo planeado,
adaptação de culturas agrícolas, literacia para os riscos e implementação de
sistemas de alerta precoce.
In the second half of the 20th century, mainland Portugal underwent widespread coastal development and rapid and unregulated urban growth. Hazardous areas prone to coastal flooding were urbanised, exposing the population to coastal risks, a situation that persists today. The findings of this dissertation suggest that Mainland Portugal contains 62 km² of areas at risk from episodic coastal flooding, which could expand by an additional 24 km² until 2100 due to sea-level rise, including 6.6 km² of already urbanised territories. Municipal adaptation priorities were identified based on hazard levels and urban exposure. Currently, the municipalities classified as high priority level for adaptation due to hazard areas are Vagos, Faro, Olhão, and Tavira, with Ovar and Vila Real de Santo António expected to be included by 2040. The current municipalities with high priority level for adaptation due to the exposure of urban areas are Póvoa de Varzim, Vila do Conde, Matosinhos, and Grândola, with Vila Nova de Gaia and Loulé projected to be included by 2040 and 2070, respectively. The identified adaptation strategies include investment in ecosystem-based solutions, planned retreat, agricultural adaptation, risk literacy, and the implementation of early warning systems.
In the second half of the 20th century, mainland Portugal underwent widespread coastal development and rapid and unregulated urban growth. Hazardous areas prone to coastal flooding were urbanised, exposing the population to coastal risks, a situation that persists today. The findings of this dissertation suggest that Mainland Portugal contains 62 km² of areas at risk from episodic coastal flooding, which could expand by an additional 24 km² until 2100 due to sea-level rise, including 6.6 km² of already urbanised territories. Municipal adaptation priorities were identified based on hazard levels and urban exposure. Currently, the municipalities classified as high priority level for adaptation due to hazard areas are Vagos, Faro, Olhão, and Tavira, with Ovar and Vila Real de Santo António expected to be included by 2040. The current municipalities with high priority level for adaptation due to the exposure of urban areas are Póvoa de Varzim, Vila do Conde, Matosinhos, and Grândola, with Vila Nova de Gaia and Loulé projected to be included by 2040 and 2070, respectively. The identified adaptation strategies include investment in ecosystem-based solutions, planned retreat, agricultural adaptation, risk literacy, and the implementation of early warning systems.
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Palavras-chave
Adaptação Exposição Inundações Ordenamento do Território Subida do Nível do Mar