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Artykuły w czasopismach na temat "Fleuve côtier méditerranéen"
Serrat, Pierre, Wolfgang Ludwig, Bénédicte Navarro i Jean-Louis Blazi. "Variabilité spatio-temporelle des flux de matières en suspension d'un fleuve côtier méditerranéen : la Têt (France)". Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science 333, nr 7 (październik 2001): 389–97. http://dx.doi.org/10.1016/s1251-8050(01)01652-4.
Pełny tekst źródłaMarchand, M. "Les PCB dans l'environnement marin. Aspects géochimiques d'apports et de distribution. Cas du littoral français". Revue des sciences de l'eau 2, nr 3 (12.04.2005): 373–403. http://dx.doi.org/10.7202/705036ar.
Pełny tekst źródłaHallouz, Faiza, Mohamed Meddi i Gil Mahe. "Modification du régime hydroclimatique dans le bassin de l’Oued Mina (nord-ouest d’Algérie)". Revue des sciences de l’eau 26, nr 1 (18.03.2013): 33–38. http://dx.doi.org/10.7202/1014917ar.
Pełny tekst źródłaRozprawy doktorskie na temat "Fleuve côtier méditerranéen"
Parthuisot, Nathalie. "Dynamique des légionelles dans un fleuve côtier méditerranéen, le Tech". Paris 6, 2009. http://www.theses.fr/2009PA066705.
Pełny tekst źródłaGarcia, Esteves Javier. "Géochimie d'un fleuve côtier méditerranéen : la Têt en Roussillon : Origines et transferts de matières dissoutes et particulaires de la source jusqu'à la mer". Perpignan, 2005. http://www.theses.fr/2005PERP0672.
Pełny tekst źródłaThe purpose of this work was the study of the chemical and mineralogical composition in the dissolved and particulate matter of the river Têt (Pyrénées-Orientales) in order to identify the major sources of these materials, and to propose detailed budgets with respect to their fluxes to the Mediterranean Sea. The main objective was to develop a geochemical and hydrosedimentological model that is able to distinguish between the part of the materials that come from natural sources, and the part that is released or retained by human activities. The scientific approach was constructed on a weekly survey during one hydrological year (2000-2001), from the headwaters down to the river mouth. The overall observations allowed the identification of five major sources that contributed to the material fluxes: rainfall, road salting, agriculture, urban waters and chemical rock weathering. For each source, the respective contributions were quantified. The particulate matter fluxes were determined by etablishing empirical models between the suspended matter concentrations and runoff, which also allowed a prediction of the carbon fluxes. All particulate matter fluxes were affected by the existence of a major reservoir lake and their retention rates in this lake could be estimated. The distinction between the natural and anthropogenic matter fluxes finally also allowed the proposition of a model about the functioning of a natural erosion that takes into account the spatial variability of the chemical and mechanical erosion in the basin, and that also distinguishes the contributions of silicate and carbonate weathering in the overall release of alkalinity to the river
Bourrin, François. "Variabilité et devenir des apports sédimentaires par les fleuves côtiers : cas du système Têt-littoral roussillonnais dans le golfe du Lion". Phd thesis, Université de Perpignan, 2007. http://tel.archives-ouvertes.fr/tel-00383233.
Pełny tekst źródłaGhsoub, Myriam. "Dynamique des masses d'eaux côtières libanaises soumises à l'impact d'un fleuve". Thesis, Perpignan, 2019. http://www.theses.fr/2019PERP0026.
Pełny tekst źródłaThe main purpose of this study is to understand the functioning of the coastal zone, land-sea continuum in Lebanon. Following the construction of dams, the contributions of the river towards the sea in terms of quantity and quality, are modified nowadays. The Ibrahim river, having the highest flow among the Lebanese rivers, interrupted by three dams, was chosen as a case study representing the Lebanese coastal rivers. The various parameters retained made it possible to obtain interesting results. At sea surface water level, the river plume is detected by studying the hydrological parameters of surface water.The results also show that the river is the main nutrient contributor in the coastal region during the wet season, elucidated by the nitrate and dissolved silica contents. On the other hand, the transfer of particles from the coastal zone to the open sea, across the continental slope, takes place through the nepheloid layers.The origin of sediments and their constituents is highlighted by analyzing several sediment parameters. The combination of organic and inorganic particle size and geochemical parameters and the application of statistical tests made it possible to distinguish between two deposition environments. (1) Coastal environments (≤ 30 m) or “bypass” area where fine sand and autochtonous organic matter dominate. (2) Deep environments (≥ 60 m) or deposit areas where the fine fraction and allochthonous organic matter dominate.The ecological state of the river water at the two sampled stations, deduced from the contents of nutrients and benthic macrofauna, is considered good to very good according to international standards. Finally, the analysis of metallic trace elements confirms the low anthropogenic contribution in the marine and river stations despite the increasing density of the population in the Lebanese coastal region
Sadaoui, Mahrez. "Variabilité et évolution des apports de matières en suspension dans la zone côtière : approche multi-échelle dans le bassin de la Méditerranée". Thesis, Perpignan, 2016. http://www.theses.fr/2016PERP0037.
Pełny tekst źródłaRivers ensure the transport of suspended particulate matter (SPM) to the Sea, introducing sand, nutrients and contaminants. According to their drainange basin characteristics (mountainous relief, contrasting climates), Mediterranean rivers are naturally rich in SPM, but their fluxes are largely altered today because of damming. This study aims to understand the variability and evolution of the riverine SPM inputs to the Mediterranean sea by a multiscale approach. (1) In the Gulf of Lion, total SPM fluxes (and associated nutrients) were estimated on the long term through the development of a new method SiRCA (Simplified Rating Curve Approach). The lithology is the main control for the spatial variability of these fluxes, which attributes to the Rhône River the dominant role in the overall fluxes (95%). (2) In the Mediterranean basin, empirical modeling could be established which allows for the first time a complete quantification of the inputs by all the rivers in this region (997 Mt/an). It also confirms the importance of lithology among the dominant controlling factors. By combining this model with a database of large dams in this region, it has been calculated that about 35% of SPM are today retained behind dams. (3) In the Maghreb basin, finally the role of sediment retention by small dams and hillside reservoirs has been studied. A new database on these reservoirs was created and combined with the database on large dams. This study demonstrates that small dams probably retain the same amount of sediments that large dams
Siché, Isabelle. "Migrations et métamorphoses historiques des fleuves torrentiels sur leur delta et leurs impacts sur les implantations portuaires antiques : l'exemple de l'hydrosystème Torre Natisone Isonzo sur la plaine côtière d'Aquilée (Méditerranée nord-occidentale)". Paris 7, 2008. http://www.theses.fr/2008PA070021.
Pełny tekst źródłaOur aim is mapping palaeochannels on the archaeological site of Aquileia. A multicriteria approach based on bio-morphosedimentary data and imagery analysis allowed us to draw the map of the hydrographical network during Roman antiquity. In the plain of Aquileia, several alluvial ridges were reconstructed from the interpretation of a DTM and a Landsat false colour composition. On the archaeological site, riverbeds were extracted from a composition Landsat of 3 neo-canals elaborated with a NDVI algorithm, which sorts out various degrees of soil moisture. Then palaeo-riverbeds were validated by a high-resolution laser DTM, by tomographic data and by sedimentological and palaeontological analyses of deep cores. Un the end, we retrieved the Isonzo paleoridges which spread out on its megafan and its ramifications increase with each floodplain break slope. One of them reaches Aquileia, but the antique harbour was crossed by the Torre alone. The river and its tributary had indeed undergone a diachronic evolution versus east. On the harbour itself, the chronostratigraphic datas showed that the River was active until II c. AD. Then it turned into a small river, the Natissa. In order to going on with the traffic, Romas performed the narrowing of the channel. The area is now abandoned till the II c AD
Moingt, Matthieu. "Caractérisation de la matière organique dissoute d'un site d'eau de surface (fleuve Saint-Laurent) et d'un site d'eau souterraine (aquifère de l'Astien, France) par l'utilisation des isotopes du carbone et des produits d'oxydation de la lignine". Phd thesis, Université Paris Sud - Paris XI, 2008. http://tel.archives-ouvertes.fr/tel-00399210.
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