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| Nichols, C. Reid; Wright, Lynn D.; Bainbridge, Scott J.; Cosby, Arthur; Henaff, Alain; Loftis, Jon D.; Cocquempot, Lucie; Katragadda, Sridhar; Mendez, Gina R.; Letortu, Pauline; Le Dantec, Nicolas; Resio, Donald; Zarillo, Gary. |
| Impacts from natural and anthropogenic coastal hazards are substantial and increasing significantly with climate change. Coasts and coastal communities are increasingly at risk. In addition to short-term events, long-term changes, including rising sea levels, increasing storm intensity, and consequent severe compound flooding events are degrading coastal ecosystems and threatening coastal dwellers. Consequently, people living near the coast require environmental intelligence in the form of reliable short-term and long-term predictions in order to anticipate, prepare for, adapt to, resist, and recover from hazards. Risk-informed decision making is crucial, but for the resulting information to be actionable, it must be effectively and promptly communicated... |
| Tipo: Text |
Palavras-chave: Coastal observations; Numerical models; Coastal flooding; Big data; Collaboration; Community vulnerability; Climate change; Urban coasts. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00637/74921/75770.pdf |
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| Mullineaux, Lauren; Speer, Kevin; Thurnherr, Andreas; Maltrud, Matthew; Vangriesheim, Annick. |
| Introduction : Dispersal processes play an important role in the structure and dynamics of many terrestrial and marine communities, and they are especially critical in deep-sea hydrothermal vent ecosystems. These systems are patchy and transient, and most of the species inhabiting them cannot survive elsewhere, so successful dispersal (usually via a larval stage) is essential for maintaining viable populations and species ranges. To understand the mechanisms of larval dispersal, we need to know larval life spans and the transport dynamics of deep-water flows near vent habitats. When these values are measured for a species in a given region, a maximum dispersal distance can be calculated and compared to the geographic spacing between vent fields in that... |
| Tipo: Text |
Palavras-chave: Numerical models; Dipersal potential; Larvae; Flow regime; Hydrothermal vent; Deep sea ecosystems. |
| Ano: 2002 |
URL: http://archimer.ifremer.fr/doc/2002/publication-898.pdf |
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| Meule, S; Pinazo, C; Degiovanni, C; Barusseau, Jp; Libes, M. |
| In marine coastal environments, storms have a major morphological impact on sand beaches. This study, part of the French Programme National d'Environnement Cotier, consisted in developing and applying hydrodynamic and sedimentary models to simulate the major processes that modify sand beaches. In order to study sediment dynamics, we developed three models to simulate waves, currents and sediment transport associated with a storm event. The wave model was a Mild Slope Equation model based on the parabolic approximation of the refraction-diffraction equation of Berkhoff. The hydrodynamic model was obtained by the depth-average of Navier Stockes' equations forced by the terms of radiation stresses induced by waves. The sedimentary model SEDSIM developed by... |
| Tipo: Text |
Palavras-chave: Modification de la plage; Modèles numériques; Transport sédimentaire; Tempête; Courants induits par la houle; Beach modification; Numerical models; Sediment transport; Storm; Wave-induced current. |
| Ano: 2001 |
URL: http://archimer.ifremer.fr/doc/00322/43339/42887.pdf |
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| Buijsman, Maarten C.; Stephenson, Gordon R.; Ansong, Joseph K.; Arbic, Brian K.; Green, J.a. Mattias; Richman, James G.; Shriver, Jay F.; Vic, Clement; Wallcraft, Alan J.; Zhao, Zhongxiang. |
| The effects of horizontal resolution and wave drag damping on the semidiurnal M tidal energetics are studied for two realistically-forced global HYbrid Coordinate Ocean Model (HYCOM) simulations with 41 layers and horizontal resolutions of 8 km (; H12) and 4 km (; H25). In both simulations, the surface tidal error is minimized by tuning the strength of the linear wave drag, which is a parameterization of the surface-tide energy conversion to the unresolved baroclinic wave modes. In both simulations the M surface tide error with TPXO8-atlas, an altimetry constrained model, is 2.6 cm. Compared to H12, the surface tide energy conversion to the resolved vertical modes is increased by 50% in H25. This coincides with an equivalent reduction in the tuned loss of... |
| Tipo: Text |
Palavras-chave: Numerical models; Internal tides; Wave damping; Vertical modes. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00640/75199/75332.pdf |
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| Escobar, S.. |
| Se presenta en este artículo una metodología a través de la cual se determina cuantitativamente el efecto en la hidrodinámica del golfo de Urabá de un grupo de procesos costeros y forzamientos externos, los cuales, inicialmente, se asumen relevantes en el comportamiento del flujo. De acuerdo con este propósito, se realiza la simulación numérica del flujo y el oleaje en el golfo a través de la plataforma de modelación Delft3D. La modelación considera los siguientes procesos: (i) la influencia marina a través del forzamiento de la marea en la frontera norte del golfo; (ii) el oleaje; (iii) la estratificación termo-salina; (iv) el arrastre del viento y (v) la influencia fluvial a través de la descarga del río Atrato y otros tributarios secundarios. La... |
| Tipo: Journal Contribution |
Palavras-chave: Beach processes; Spatial analysis; Numerical models; Coasts; Hydrodynamics. |
| Ano: 2011 |
URL: http://hdl.handle.net/1834/4510 |
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