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Flood risk assessment in an urban area: Vila Nova de Gaia

This paper proposes a methodology for flood risk assessment in a non fluvial urban flood. Two hazard classifications were considered; one with water depth and flow velocity classes and other with the product of water depth and flow velocity. The vulnerability assessment resulted in five classes obtained by cluster and principal components analysis. Flood risk maps were achieved by hazard and vulnerability class...

The amphipod Corophium multisetosum (Corophiidae) in Ria de Aveiro (NW Portugal...

The population of Corophium multisetosum Stock, 1952 in Areao displayed a semiannual, iteroparous life history. Mean longevity was similar to6 mo, with the estimated life span longer for overwintering individuals born in autumn than for individuals born in spring. Length-frequency data indicated that the length increment per moult is probably higher in males than females; however females moulted more frequently...

The amphipod Corophium multisetosum (Corophiidae) in Ria de Aveiro (NW Portugal...

The abundance and biomass of Corophium multisetosum Stock, 1952 were determined from benthic corer samples collected monthly over 1 yr in the upper reaches of Canal de Mira (Ria de Aveiro, Portugal). Both density and biomass over the sampling period were negatively correlated with water temperature and positively correlated with chlorophyll n concentration in the sediment. C, multisetosum density was significan...

Automatic calibration of the SHETRAN hydrological modelling system using MSCE

Automatic calibration is preferred because it provides an objective and extensive searching in the feasible parameter space. In this study, the Modified Shuffled Complex Evolution (MSCE) optimization algorithm is applied to automatically calibrate the physically-based spatially-distributed hydrological model SHETRAN in the 705-km2 semi-arid Cobres basin in southern Portugal, with a spatial resolution of 2 km an...

A Bacia Lusitaniana : estratigrafia, paleogeografia e tectónica

Is the underwater gliding test a valid procedure to estimate the swimmers’ drag?

The aim of this study was to develop a structural equation model for underwater gliding distance based on its determinant variables, in order to confirm whether it is an informative test of young swimmers’ hydrodynamic profile. Methods: Twenty-three subjects (twelve boys and eleven girls with a mean age of 13.61 ± 0.83 years old) were evaluated. The following were determined: (i) the underwater gliding distance...

Characterization of speed fluctuation and drag force in young swimmers: a gende...

The aim of this study was to compare the speed fluctuation and the drag force in young swimmers between genders. Twenty-three young pubertal swimmers (12 boys and 11 girls) volunteered as subjects. Speed fluctuation was measured using a kinematical mechanical method (i.e., speedo-meter) during a maximal 25-m front crawl bout. Active drag, active drag coefficient and power needed to overcome drag were measured w...

Avaliação do risco de inundação numa zona urbana. Aplicação ao Rio Febros

O risco de inundação resulta do produto da probabilidade do perigo, da vulnerabilidade e do valor dos elementos expostos. O objectivo deste estudo é elaborar a carta de risco de inundação para um troço (4 km) do rio Febros no Concelho de Vila Nova de Gaia. O processamento de dados espaciais de alta resolução permite extrair dados de entrada para a modelação hidráulica de inundação. Para atingir estes objectivos...

Avaliação do risco de inundação numa zona urbana. Aplicação ao Rio Febros

O risco de inundação resulta do produto da probabilidade do perigo, da vulnerabilidade e do valor dos elementos expostos. O objectivo deste estudo é elaborar a carta de risco de inundação para um troço (4 km) do rio Febros no Concelho de Vila Nova de Gaia. O processamento de dados espaciais de alta resolução permite extrair dados de entrada para a modelação hidráulica de inundação. Para atingir estes objectivo...

Flood hazard mapping by integrating airborne laser scanning data, high resoluti...

The assessment and management of flood risks framework impose the mapping of flood hazard in potential flood risks areas. Floods in urban environments may happen due to rainfall extreme events and be exacerbated by saturated or impervious surfaces. Flood risk is greater in urban areas. (...)