37 documents found, page 1 of 4
A Carta Portuguesa de 1826 ou o laboratório dum “religioso constitucionalismo”
Ferreira, OscarPolis. S. 2, n. 13 (2026). ISSN 0872-8208.
Improved estimates of extreme wave conditions in coastal areas from calibrated ...
Fanti, Valeria; Ferreira, Oscar; Kümmerer, Vincent; Loureiro, CarlosThe analysis of extreme wave conditions is crucial for understanding and mitigating coastal hazards. As global wave reanalyses allow to extend the evaluation of wave conditions to periods and locations not covered by in-situ measurements, their direct use is common. However, in coastal areas, the accuracy of global reanalyses is lower, particularly for extreme waves. Here we compare two leading global wave rean...
Challenges to knowledge translation in the digital age
Presado, Maria Helena; Marques, Fátima Mendes; Ferreira, Oscar; Cardoso, Mário; Sousa, Armando David; Nascimento, TiagoThe translation of knowledge into clinical practice and behavior change is a slow process that involves the involvement of all stakeholders in the process. Knowledge transfer (CT) is a complex process and encompasses more than the dissemination or communication of research results. Inherent in the pandemic context, our experience reveals some constraints on multidisciplinary and interinstitutional work, but the...
Early Warning System development: Quarteira and Praia de Faro
Garzon, Juan L.; Zozimo, Catarina; Ferreira, Andreia M. Marques; Ferreira, Oscar; Fortes, Conceição Juana; Reis, Maria TeresaMany coastal zones worldwide are heavily populated and host very important socio-economic sectors. Portugal is a good example of countries whose economy is highly dependent on tourism activities, especially those sea-related activities. The two sites selected in this project (Quarteira and Faro) receive thousands of national and international visitors annually, not only during the summertime but also in the res...
Modeling of coastal erosion in exposed and groin-protected steep beaches
Garzon, Juan L.; Ferreira, Oscar; Plomaritis, Theocharis A.Process-based models are suitable tools for reproducing storm-driven erosion. However, their performance has been mainly examined on mild-slope sandy beaches and their use on steep beaches still represents a challenge. Here, open-source process-based model XBeach experiments were combined with topographical measurements collected for two storms (16- and 5-year return period) to obtain a reliable model. The mode...
Uncertainty analysis related to beach morphology and storm duration for more re...
Garzon, Juan L.; Plomaritis, T. A.; Ferreira, OscarEarly warning systems (EWSs) for coastal erosion are highly cost-effective instruments for disaster risk reduction. Among other aspects, an adequate pre-storm beach morphology and the storm characteristic definition are relevant in determining EWSs prediction reliability. Here, XBeach simulations were used to investigate the beach-dune response to different storm events with varying duration and pre-storm morph...
A new index to assess the state of dune vegetation derived from true colour images
Talavera, Lara; Costas, Susana; Ferreira, OscarVegetation on coastal dunes is a key element, as it promotes the growth and stabilization of these landforms while contributing significantly to biodiversity. Physical (e.g. impact of storms), ecological (e.g. animal grazing) and human-related (e.g. farming and recreation) factors may disturb coastal dune vegetation, changing dune dynamics and eventually inducing ecogeomorphic state shifts. Therefore, understan...
Implications of sea-level rise for overwash enhancement at South Portugal
Ferreira, Oscar; Kupfer, Sunna; Costas, SusanaOverwash is one of the most prominent hazards affecting coastal zones, and the associated consequences are expected to increase because of both sea-level rise and intensification of coastal occupation. This study used a 23-year data set of wave heights and tide-surge levels to define return periods of overwash potential for current and future sea-level conditions, namely 2055 and 2100, at two sites from South P...
Place attachment, risk perception, and preparedness in a population exposed to ...
Domingues, Rita; Jesus, Saúl; Ferreira, OscarLiving by the coast is a high-risk choice, but most people do it voluntarily. At Faro Beach, a heavily urbanized settlement located on a sandy barrier peninsula exposed to coastal hazards, houses and roads were destroyed due to storm action. However, residents feel safe living there and have no intentions of relocating. The development and implementation of coastal management plans and disaster risk reduction m...
Biotic and abiotic factors governing dune response to storm events
Garzon, Juan L.; Costas, Susana; Ferreira, OscarThe alongshore response of dunes to storm events can be extremely variable and,consequently, their capacity to maintain their services, including the protection ofhinterland communities. In this study, the role of biotic and abiotic factors determin-ing the magnitude of dune retreat driven by a severe storm along a 60 km barrierisland system was investigated. Data from high-resolution satellite imagery, digital...