Publicação
Satellite-driven multi-scale approach for shoreline trend analysis in Mainland Portugal
| Resumo: | Mainland Portugal has approximately 415 km of low-lying sandy coastline, 45% of which show an erosion trend. In order to quantify the shoreline trends, the CASSIE (Coastal Analyst System from Space Imagery Engine) tool and Sentinel-2 images (2015-2023) were used to generate the shoreline position, whichwere analyzed at three administrative scales: national, regional, and municipal. Results indicate that 41% of sectors are stable, 31% accreting, 19% eroding, and 9% critically eroding. Ovar municipality shows the highest average erosion rate (-2.6 m/yr), encompassing some of the beaches experiencing the most critical coastal erosion rates. |
|---|---|
| Autores principais: | Andreia Alves da Silva, Luís Pedro Almeida e António H.F. Klein |
| Assunto: | Linha de Costa Monitorização Costeira; Erosão Costeira. Shoreline Position Coastal Monitoring; Coastal Erosion. |
| Ano: | 2026 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | unknown |
| Instituição associada: | Universidade Aberta |
| Idioma: | português |
| Origem: | AD ASTRA: Revista online da Universidade Aberta |
| Resumo: | Mainland Portugal has approximately 415 km of low-lying sandy coastline, 45% of which show an erosion trend. In order to quantify the shoreline trends, the CASSIE (Coastal Analyst System from Space Imagery Engine) tool and Sentinel-2 images (2015-2023) were used to generate the shoreline position, whichwere analyzed at three administrative scales: national, regional, and municipal. Results indicate that 41% of sectors are stable, 31% accreting, 19% eroding, and 9% critically eroding. Ovar municipality shows the highest average erosion rate (-2.6 m/yr), encompassing some of the beaches experiencing the most critical coastal erosion rates. |
|---|