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Abstract(s)
RESUMO: Portugal Continental apresenta uma zona costeira extensa, diversificada e complexa. Essa diversidade dá origem a diversas características geológicas e geomorfológicas que suportam diferentes densidades de ocupação humana e uma variedade de atividades, de uso e de ocupação do solo. A crescente ocupação antrópica da zona costeira nas últimas sete
décadas originou um conflito com a dinâmica natural dessas áreas. Nas últimas décadas, o litoral de Portugal Continental tem sido frequentemente afetado por galgamentos e inundações costeiras. Com base na divisão da zona costeira em três tipologias principais distintas (costa baixa arenosa, arriba e costa de transição), o objetivo deste trabalho é compreender os
impactos de ocorrências de galgamentos e inundações costeiras entre 1980 e 2018 que afetaram as diferentes tipologias. Os resultados evidenciam o maior número de ocorrências relacionadas com litorais arenosos baixos e de transição, permitindo identificar e diferenciar impactos nas diferentes tipologias costeiras.
ABSTRACT: The mainland of Portugal presents an extensive, diversified and complex coastal zone. This diversity gives rise to diverse geologic and geomorphologic features that support different densities of human occupancy and a wide range of land uses and activities. In the last seven decades, the increasing of the coastal zone anthropic occupation led to a conflict with the natural dynamics of these areas. In the last decades, the coast of mainland Portugal has often been affected by overtopping and coastal flooding processes. Based on the division of the coastal zone into three main distinct typologies (low sandy coast, cliff coast and transitional coast), the aim of this work is to understand the impacts resulting from coastal floods and overtopping between 1980 and 2018 affecting the different typologies. The results show that the higher number of occurrences are related to the low sandy and transitional coast allowing to identify and differentiate impacts on the different coastal typologies.
ABSTRACT: The mainland of Portugal presents an extensive, diversified and complex coastal zone. This diversity gives rise to diverse geologic and geomorphologic features that support different densities of human occupancy and a wide range of land uses and activities. In the last seven decades, the increasing of the coastal zone anthropic occupation led to a conflict with the natural dynamics of these areas. In the last decades, the coast of mainland Portugal has often been affected by overtopping and coastal flooding processes. Based on the division of the coastal zone into three main distinct typologies (low sandy coast, cliff coast and transitional coast), the aim of this work is to understand the impacts resulting from coastal floods and overtopping between 1980 and 2018 affecting the different typologies. The results show that the higher number of occurrences are related to the low sandy and transitional coast allowing to identify and differentiate impacts on the different coastal typologies.
Description
Keywords
Zona costeira Inundação costeira Base de dados Tipologias Coastal zone Coastal flooding Database Typologies
Citation
Tavares, A.O., Barros, J.L. & Freire, P. (2025). Inundações e galgamentos costeiros em Portugal continental: complexidade territorial e diversidade de impactos. In: Comunicações Geológicas, 2025, vol. 112, Fascículo Especial I, pp. 311-314. https://doi.org/10.34637/s3ds-fe20
Publisher
LNEG - Laboratório Nacional de Energia e Geologia