|
|
|
|
|
| Mazieres, Alais; Gillet, Herve; Castelle, Bruno; Mulder, Thierry; Guyot, Corentin; Garlan, Thierry; Mallet, Cyril. |
| In this study, the Capbreton canyon head, just off the coast, is investigated using high-resolution multibeam bathymetry datasets, sediment samples and numerical modeling. The HR bathymetry analysis reveals a morphological connection between the longshore trough and the head of the canyon. The analysis of recent sediment samples shows a clear correlation between the sediment of the canyon head and that of the nearshore. Hydrodynamic modeling (a coupled wave-flow model) shows that for high-energy waves, the rotational nature of surf-zone circulation reverses and wave-induced currents have the potential to transport large quantities of nearshore sands toward the canyon head. All these arguments support the assumption that the canyon head captures a part of... |
| Tipo: Text |
Palavras-chave: Longshore drift; Submarine canyon; Capbreton; Hydrodynamic modeling; Sediment transport. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00180/29118/27524.pdf |
| |
|
|
| Wilson, Jeff; Hinz, Shawn; Coston-guarini, Jennifer; Maze, Camille; Guarini, Jean-marc; Chauvaud, Laurent. |
| his viewpoint article examines Environmental Impact Assessment (EIA) practices in developed and transitioning nations, identifies weaknesses, and proposes a new quantitative approach. The literature indicates that there exists little to no standardization in EIA practice, transitioning nations rely on weak scientific impact analyses, and the establishment of baseline conditions is generally missing. The more fundamental issue is that the “receptor”-based approach leads to a qualitative and subjective EIA, as it does not adequately integrate the full measure of the complexity of ecosystems, ongoing project risks, and cumulative impacts. We propose the application of a new framework that aims to ensure full life cycle assessment of impacts applicable to any... |
| Tipo: Text |
Palavras-chave: Environmental impact assessment; Ecosystem modeling; Hydrodynamic modeling; Baseline survey; Ecosystem-based environmental assessment; Environmental sensing technology. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00416/52781/53661.pdf |
| |
|
| |
|
|
| GUEDES,HUGO A. S.; SILVA,DEMETRIUS D.; DERGAM,JORGE A.; ELESBON,ABRAHÃO A. A.. |
| ABSTRACT This paper aimed at determining the environmental flow regime in a 1 km stretch of the Formoso River, MG, using River2D model. To carry out the ecohydrological modeling, the following information was used: bathymetry, physical and hydraulic features, and the Habitat Suitability Index for species of the Hypostomus auroguttatus. In the River2D, the Weighted Usable Areas were determined from the average long-term streamflows with percentage from 10% to 100%. Those streamflows were simulated for the later construction of optimization matrices that maximize the habitat area throughout the year. For H. auroguttatus Juvenile, higher values of Weighted Usable Area were associated with the percentage of 60% and 70% of the average long-term streamflows in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ecohydrology; Hydrodynamic modeling; River2D; Water resources; WUA. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000602429 |
| |
|
|
|
