Dissertations / Theses on the topic 'Riviste francesi'
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Mori, Anita. "I forestierismi nel linguaggio della moda e della bellezza. Analisi della presenza di prestiti francesi e inglesi nelle riviste di moda italiane." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/11359/.
Full textDumas, née Lavallard Colette. "Monographie de Théodore Rivière (1857-1912)." Montpellier 3, 1997. http://www.theses.fr/1997MON30047.
Full textTheodore riviere (1857-1912), french sculptor, receives a traditional formation at toulouse's fine arts school, then at paris's national fine arts school. He starts his carrier under the falguiere's and mercie's influence. Unsuccessful, he is attracted by orient. Travelling allows him free himself and gives him new inspiration's subjects, sometimes through literature, and a novating personal style too. These new qualities appear in his master work salammho chez matho. Coming back again at paris, he distinguishes himself by a little size sculpture. This size made use for nude and for his contemporaries' fulllengh portrait. He associates materials which have a delicate polychromy, and they contribute to his work's expression. At the same times, he collaborates with some china's and bronze's editors. He follows trends wished by the central union of decorative arts and his tendency for the social art theories. As for back as 1900, he comes back to monumental sculpture he did at his beginning, and fits it to public monuments erected in indochina and in france, without missing the successfull decorative genus. His sculpture, often inspirated by literature and anecdote, values by life qualities and movement expressed, and by form's and materials refinement. It's the reflection of his contemporaries' trends. It gives evidence of an art which adapts itself to the third republic's ideology
Pustelnik, Guy. "Etude écologique préalable à l'aménagement piscicole de la rivière Dordogne." Bordeaux 3, 1987. http://www.theses.fr/1987BOR30045.
Full textIn order to make easy the realization of a piscicult management plan of the river Dordogne and to consider the realization of gradings, several searches have been realized. The purpose of this work is to develop an analysis method which makes easy the establishment of a piscicult diagnostic and the development of adapted gestion procedures. The first part states clearly the principal aspects of the piscicult life through of the phenomena's reproduction analysis of requirements'shelters and nourishment. In the second part, directly derived from the conclusions of the first, methods and technics of studies are established. The third part defines the study range : - the Dordogne river and its morphological characteristics and dynamics (descriptives of principal facies meted are derived from this study), - water's physiocochemistry, - the course biology and specially the piscicult peopling study through surrounding utilization by species. The fourth part talks about habitability of the river for the different fishes species. A new indication (indication of total quality of habitat) is suggested and its reliability is analysed and criticized for the river dordogne. The last part forms the application of the suggested analysis method for the putting of gestion plan on a pattern stump of river Dordogne. Finally, the end takes again the principal results presented in this study
Gendron, Jean-Marie. "Les Chironomidés (Diptera) de l'Aude, rivière méditerranéenne des Pyrénées-Orientales. Impact d'une crue catastrophique." Toulouse 3, 1996. http://www.theses.fr/1996TOU30026.
Full textGonzalez, Alicia. "Suivi sismologique de l'impact des cyclones sur la charge de fond de la Rivière des Pluies et de la Rivière du Mât à La Réunion." Thesis, La Réunion, 2019. http://www.theses.fr/2019LARE0018.
Full textTropical cyclones can generate huge precipitation rates leading to torrential floods. The consequences for civilian infrastructures and population can be significant as phenomenal amounts of sediment are transported to the ocean. Direct measurements of sediment transport are impossible to implement under these extreme hydrodynamic conditions. To overcome these experimental limitations, previous studies have shown that seismology can be an excellent tool for an indirect access to information on the dynamics of a flooded river: turbulent flow and solid transport. Reunion Island is an ideal place to make such observations because its relief, its latitude, and therefore the climatic aspects favour the generation of potentially devastating torrential floods. We have deployed a temporary seismological network of ten three-component, brodeband seismic stations (http://dx.doi.org/10.15778/RESIF.ZF2015) dedicated to studying signals associated with the activity of the rivers Rivière des Pluies and the Rivière du Mât. Data from these seismic stations during several cyclonic floods (Bejisa, Carlos and Dumazile) were analyzed. For a better understanding of the seismological signal of fluvial origin, one of the key points was to compare it with hydrometeorological data and punctually with granulometric and photogrammetric observations. We show that it is possible to use high-frequency seismic observations (> 1 Hz) to monitor the variation in water level during such episodes in Reunion Island and thus estimate a flood wave velocity. We distinguish the seismic signature of the flow and sediment transport and show that these two seismic sources are distributed throughout the entire river segment near the seismometers
Toone, Julia. "Discontinuités géomorphologiques et organisation des communautés benthiques sur le continuum fluvial de la rivière Drôme." Lyon 3, 2009. https://scd-resnum.univ-lyon3.fr/out/theses/2009_out_toone_j.pdf.
Full textA mixed bedrock-alluvial reach of the River Drôme, France forms the central focus of this thesis. The first part examines long-term changes in channel morphology, and the development of present-day geomorphic zonation. The second part examines the present-day organisation of in-stream macroinvertebrate communities and associations with channel morphology. The study reach is located 200 m downstream from the Béoux sub-catchment, a site chosen for the experimental remobilisation of sediment to rehabilitate degradation along the reach and in downstream parts of the Drôme. The third part evaluates the likely morphological and ecological impacts of this management strategy. Analyses reveal that degradation is a discontinuous process both in time and in space. A large flood in 1978 is seen as the catalyst of zonation. By locking the reach into a particular geometry it imposed substantial spatial discontinuity in the capacity and the propensity of the channel to adjust. Spatial differences in macroinvertebrate community structure reflect spatial differences in channel behaviour. Zone-scale variation in longitudinal, lateral and vertical connectivity, and in particular bed disturbances associated with zone-scale regimes of sediment transfer and storage, control the organization of in-stream fauna. It is considered that the present-day mixed bedrock-alluvial morphology supports a more diverse fauna than historical, alluvial channels. If fluxes of bedload reintroduced to the Drôme are not inferior or excessive to the present-day regimes responsible for maintaining zonation, then this self-regulating dynamic could be maintained. This would also maintain the present-day patterns of macroinvertebrate community structure and so it is concluded that if the reach is secured with a moderate and frequent supply of bedload then the remobilization of sediment is a desirable management strategy
Rouillard, Joséphine. "L' homme et la rivière : histoire du bassin de la Vanne au moyen-âge (XIIe-XVIe)." Paris 1, 2003. http://www.theses.fr/2003PA010689.
Full textLanglade, Laurent-Roland. "Dynamique de colonisation de la végétation pionnière des bancs de galets en rivière." Toulouse 3, 1994. http://www.theses.fr/1994TOU30271.
Full textCellot, Bernard. "Dérive et flux du matériel organique, notamment des macroinvertébrés, dans une grande rivière européenne." Lyon 1, 1996. http://www.theses.fr/1996LYO10002.
Full textHerencia, Bernard. "Physiocratie et gouvernementalité : l’œuvre de Lemercier de la Rivière." Paris 10, 2011. http://www.theses.fr/2011PA100199.
Full textThe physiocrat Lemercier de la Rivière (1719-1801) dealt with the articulation of economics and politics around the issue of political construction that the Physiocratic economic ideal required. He is the instigator of « despotisme légal » that designates him as a « branche particulière » of Physiocracy which is regarded as a school of economic thought initiated and led by Francois Quesnay. He had three overlapping careers: as a lawyer, a colonial administrator, and a writer. Apart from, L’Ordre naturel et essentiel des sociétés politiques, the corpus of Lemercier de la Rivière remains virtually unexplored except by Richner who was looking for some Marxist premises and May who recounted his career as an colonial administrator. The thinking of Lemercier de la Rivière produced on the one hand a Physiocratic synthesis and on the other hand an ambitious post-Quesnay political structure with a draft constitution with innovative procedures for constitutional review. Lemercier de la Rivière kept, as an horizon, the functioning of the market and free trade, but he focused his work on the power of the State and he provided a constitutional, tax and educational framework, that freed up economic activities. He was the most political author of Physiocracy but his political discourse has remained mostly inaudible to the students of Physiocracy. This research has a double aspiration: to bring out of the shadows most of Lemercier de la Rivière’s publications and manuscripts; and to reveal the specifics of his thinking with respect to Physiocracy. Holding on to the central idea that economic efficiency and the satisfaction of the needs of populations can be sought and achieved only in the stability of a controlled society obtained within a consistent and sustainable legal-institutional framework, we will link our study with Lemercier de la Rivière’s conception of the power of the State. We will focus on the reconstruction of basic articulations between politics and economics to find the internal coherence of the physiocracy that Lemercier de la Rivière wished to produce and wanted to transform to build a governmentality, as Foucault expressed it, a « conduite des conduites » of men using their autonomy, their freedom, as an art of government which can be instrumentalized in and by the law. It will study the rationalities that underlie the practices of government, including that the art of government is structured by the interests of the prince. Finally, a governmentality focused on the rationalization of the power of the State structured by a positive law in conformity with natural law and with the will to state “ les connoissances nécessaires à l’état de Citoyen, [qui] sont précisément les regles de conduite auxquelles chaque Citoyen est tenu de se conformer”. A first phase will identify the origins of the reflection of Lemercier de la Rivière (his time as a colonial administrator, his writing and entering into Physiocracy) to write his intellectual biography. A second phase will explore the contours and organization of power of the State in his political thinking; it will establish how the physiocrat defined government in terms of fields and means of action. A third phase will examine Lemercier de la Rivière’s constitutional proposals, especially to compare them with the alternative models of Montesquieu and Rousseau, and assess their influence in the last quarter of the eighteenth century
Marnezy, Alain. "L'Arc et sa vallée : anthropisation et géodynamique d'une rivière alpine dans son bassin versant." Université Joseph Fourier (Grenoble), 1999. http://www.theses.fr/1999GRE10013.
Full textLaguionie, Philippe. "Mesures in situ et modélisation du transport des sédiments en rivière : application au bassin versant de la Vilaine." Rennes 1, 2006. http://www.theses.fr/2006REN1S160.
Full textRichard-Mazet, Alexandra. "Etude écotoxicologique et environnementale de la rivière Drôme : application à la survie de la loutre." Phd thesis, Université Joseph Fourier (Grenoble), 2005. http://tel.archives-ouvertes.fr/tel-00275129.
Full textEn France, les populations de loutre ont disparu de nombreux départements, mais restent présentes dans le Massif Central et sur la côte Atlantique. Il existe également une population résiduelle en Alsace, provenant d'une campagne de réintroduction.
Dans le cadre de la ZABR (Zone Atelier du Bassin du Rhône) et en collaboration avec le CORA (Centre Ornithologique Rhône-Alpes), nous avons réalisé une étude sur le département de la Drôme afin d'évaluer le statut des populations de loutre sur ce département. En parallèle, une étude écotoxicologique de cette rivière a été menée, avec analyse des polluants bioccumulatifs (PCBs, organochlorés et métaux) le long de la chaîne alimentaire. Une enquête sociologique a permis d'évaluer l'état de connaissance et la perception de cet animal par les usagers de la rivière (pêcheurs, chasseurs, kayakistes...).
La loutre est-elle présente sur la Drôme ? Ce milieu est-il apte à la survie de cet animal ? Quel est l'état de pollution de cette rivière ? Quelles comparaisons est-il possible de réaliser avec les populations ardéchoises et alsaciennes ? Voici les principales questions auxquelles nous avons tenté de répondre.
Céréghino, Régis. "Influence des éclusées hydroélectriques sur la structure et la dynamique des populations d'invertébrés d'une rivière pyrénéenne de moyenne montagne." Toulouse 3, 1997. http://www.theses.fr/1997TOU30010.
Full textFragnoud, Elisabeth. "Préférences d'habitat de la truite fario (Salmo trutta fario L. , 1758) en rivière : quelques cours d'eau du Sud-Est de la France." Lyon 1, 1987. http://www.theses.fr/1987LYO11750.
Full textDurbec, Martial. "Ecologie et biologie de deux espèces de poissons cyprinidés de la rivière Durance, le blageon et le spirlin." Aix-Marseille 1, 2010. http://www.theses.fr/2010AIX11124.
Full textA flow modification can lead to changes in life history traits, interspecific interactions, movements and the impact of abiotic factors on fish populations. Spirlin longevity was three years, with the acquisition of the maturity after their first year for males and after their second year for females. Soufie longevity was four to five years, with the acquisition of the maturity after their second year for the two sexes. In comparaison with others populations studeid in Europe, the growth was higher for spirlin and lower for soufie from the study aera on the Durance River. Moreover, an ontogenetic threshold was identified for both species. According to the niche theory, the species survival is linked to a partitioning of their resources. The two species showed a food partitioning. Stable isotope values were confirmed by stomach contents results. Tributaries represent inputs in flow, nutriments ans habitats for a main river. Soufie and spirlin coming moved from the Durance River to the tributary during the winter period. This result was underlined by stable isotope values. Abiotic factors of temperate stream with a mediterranean climate are described as severe, unpredictable and with a high frequency of flooding and then influence the structure of the fish population. The several spawning batches of spirlin females seem to have allowed juveniles to avoid high concentrations of channel suspended sediment, harmful for their survival
Allouche, Stéphanie. "Stratégies d'utilisation de l'habitat par les poissons d'eau courante : rôle du couvert : étude par radiopistage & en rivière expérimentale." Lyon 1, 2001. http://www.theses.fr/2001LYO10103.
Full textBouyer, Murielle. "Les gens de la mer de la Rivière de Loire : étude d'un bassin de main d'œuvre du commerce nantais au XVIIIe siècle." Nantes, 2004. http://www.theses.fr/2004NANT3030.
Full textGaspar, Neto Pascoal. "Les Relations nappe-rivière en milieu urbain : Application à la vallée de la Meurthe à Nancy." Nancy 1, 1992. http://www.theses.fr/1992NAN10381.
Full textClaude, Nicolas. "Processus et flux hydro-sédimentaires en rivière sablo-graveleuse : influence de la largeur de section et des bifurcations en Loire moyenne (France)." Thesis, Tours, 2012. http://www.theses.fr/2012TOUR4039/document.
Full textA widening/narrowing area (ZER) of the main channel of the middle reaches of the Loire River (France), including an asymmetrical bifurcation, are studied from hydraulic measurements, multibeam bathymetries and sediment sampling. The evolution of the ZER’s morphology is influenced by the morphodynamics of bars. The forcing effects induced by channel width variations and by bars configuration determine the structure of water and sediment fluxes which affect, in turn, the bars evolution. During floods, the links between hydrodynamics, bedload transport and dunes dynamics adjust to discharges variations and cause bed erosion before the flood’s peak and bed aggradation after. Due to the high sediment mobility, the low flow periods highly affect the morphological evolution of the ZER. In 2010, the total bedload transport reached 480 000 t. The bifurcation influences the flow structure only after the total submersion of the inlet step of the secondary channel. The exportation of the bed-material load toward the secondary channel becomes probably significant after the erosion of the inlet step as well as by the presence of a bar in front of this step
Ochoa-Salazar, Brenda-Xiomara. "Etude conjuguée géochimique/hydrologique des relations nappe-rivière dans une zone humide : cas de la zone humide alluviale de Monbéqui, France." Toulouse 3, 2008. http://thesesups.ups-tlse.fr/468/.
Full textThis study combined analysis of terrain and analysis of laboratory to identifier the characteristics of waters the wetland zone and the processes that originate this characteristics. The Monbequi wetland zone studying (25 h) localize à 50 km of Toulouse, is a complex area, place of take river waters mass and groundwater(s) input additional (agricultural fertilizer, domestics discharge) and zone where take place many reactions biologics. This approach was used the multi-compounds analysis, in the mixing diagrams. The analysis of conservatives elements (18O/16O, Cl-, Na+ y Ca2+) permit identifying three waters mass: Garonne river water and two different groundwater. The analysis of concentrations of elements non-conservatives (COD, NO3-, DO, Mn, Fe) associate of biogeochemical reactions of organic matter relative to concentrations of the simple mixing waters mass permit to identify and quantify the excess and deficits of compounds, and to definer spatially of zones with the excess and deficits of this compounds with characteristics different. These zones are associated to different evolutions conditions, for oxidation of organic matter of origin distinct. Two flux of organic matter of origin distinct are identified: one flux of organic matter contribution for the Garonne River and that oxidizes after entering in contact with aquifer of the wetland zone, take place the reactions that showed the spatial areas of deficits in COD, NO3-, DO, and excess in Mn and Fe at long of gravel banks Garonne River toward interior of wetland zone. On the other hand we have one flux of the organic matter from the surface of wetland zone; it is the origin of the excess general in the carbonates of waters. This flux is estimated ten times higher that the flux of organic matter in contact Garonne River-Aquifer. The evolution of oxidized in the organic matter take place at the zones with deficits in nitrates, showed respectively by the processes of denitrification and nitrification. .
Comte, Katia. "Etude de la variabilité épiphytique algale en rivière méditerranéenne. Comparaison des communautés microphytiques sur différentes plantes-hôtes." Aix-Marseille 3, 2001. http://www.theses.fr/2001AIX30020.
Full textEpiphytic algal communities firmly attached on vegetal substrate have been studied in natural and not polluted river, in south-east of France, the Sorgue. First, a comparative approach has been made on algal populations of a common host-plant in karstic springs : Apium nodiflorum (L. ) Lag. , according to its structural variability. Supplementary analysis has been carried out on the same macrophyte deducted from another hydrosystem, and revealed a common epiphytic pool of algae, independant of environmental and of temporal factors. Second approach has been dreaded in order to estimate the influence of macrophytic architecture on spatial distribution of epiphytes. A sampling has been realised 'in situ' on different leaflets of Apium and revealed a no-stochastic microdistribution of algae on plants, proved by randomization tests. Another analysis of microstructure in epiphyte/host-plant complex makes complete this approach. Furthermore, comparison between microphytic communities on different plants, allows to observed qualitative and quantitative variability of epiphytes, binded to structural arrangement of macrophytes. .
Loicq, Pierre. "Caractérisation et modélisation de la température des rivières sur le bassin de la Maine : influence de la végétation rivulaire et des échanges nappe-rivière." Thesis, Tours, 2018. http://www.theses.fr/2018TOUR4025.
Full textThe spatial variability of stream temperature was analysed at the regional scale on the climatically homogeneous Maine catchment (22350 km²), thanks to temperature measurements of 44 monitoring stations localised on Strahler orders 2 to 7. This variability was found to be linked to the distance from source and the groundwater fluxes. Based on this finding, an empirical model was developed. It can predict weekly water temperature with a RMSE of 1.35 °C and a mean bias of -0.13 °C. The physically based model T-NET was applied on the Maine catchment in order to understand its strong and weak points and suggest potential methods to solve them. The impact of riparian vegetation on stream temperature, via its influence on solar and longwave downward radiation was characterised at the metric resolution thanks to LiDAR data on 270 km of the Loir River. T-NET's performances are improved compared to simpler shade characterisation methods and the vegetation's cooling effect on maximum daily temperature was quantified. Finally, groundwater fluxes computed on the Loir basin by the Eaudyssée model at the kilometric resolution and the daily time step were injected in T-NET. The impact on T-NET's performances, as well as the thermal influence of these groundwater fluxes were analysed
Valentin, Sylvie. "Variabilité artificielle des conditions d'habitat et conséquences sur les peuplements aquatiques : effets écologiques des éclusées hydroélectriques en rivière : études de cas (Ance du Nord et Fontaulière) et approches expérimentales." Lyon 1, 1995. http://www.theses.fr/1995LYO10052.
Full textVilain, Guillaume. "Emissions de N2O dans un versant agricole de grandes cultures (Brie, Bassin de la Seine) : observations, expérimentations et modélisation dans un continuum "plateau/zone enherbée/rivière"." Paris 6, 2010. http://www.theses.fr/2010PA066545.
Full textSaleh, Firas. "Apport de la modélisation hydraulique pour une meilleure simulation des tirants d'eau et des échanges nappe - rivière à l'échelle régionale." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2010. http://tel.archives-ouvertes.fr/tel-00582551.
Full textRiotte, Jean. "Etude du déséquilibre 234U-238U dans les eaux de rivière : cas du Strengbach, du mont Cameroun et de l'Himalaya." Université Louis Pasteur (Strasbourg) (1971-2008), 2001. http://www.theses.fr/2001STR13094.
Full textDella, Rossa Pauline. "Conception collective d'organisations territoriales innovantes pour une évolution coordonnée de systèmes de production agricoles. Cas d’une réduction de la pollution herbicide d’une rivière en Martinique." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASA005.
Full textIn the West Indies, the climate is favorable for the growth of weeds and monocultures need chemical inputs, which increases the pesticide pressure. In Martinique, pollution by chemical molecules, via spatialized transfer mechanisms at the watershed scale, degrades the quality of river water. In this context, the thesis proposes an original collective design method to design innovative territorial organizations that coordinate changes in agricultural production systems, which reduce the concentration of herbicide in rivers.The approach is applied to a watershed polluted by herbicides and combines: a socio-technical system diagnosis, a phase of innovative design workshops inspired by the CK theory and a phase of evaluation of innovative concepts by simulation in a role-playing game. Innovations involve a spatial distribution of innovative techniques on the territory of the watershed and devices, facilities, organizations to ensure their success and sustainability. The thesis is in the fields of Landscape Agronomy and Innovative Design Agronomy
Ayoub, Hawraa. "Procédé photo-Fenton hétérogène pour l'élimination des micropolluants à très faible concentration de la rivière Meurthe." Thesis, Université de Lorraine, 2018. http://www.theses.fr/2018LORR0025/document.
Full textTwenty one 21 micropollutants including pharmaceuticals, personal cares product, endocrine disruptors and perfluorinated compounds presenting at ng/L in the real water of Meurthe river, were successfully quantified and removed using heterogeneous photo-Fenton process. To achieve this goal, an analytical-catalytic methodology was developed and the work steps were performed linked together in a cycle-like manner. The use of the sensitive and efficient multi-residual SPE-LC-MS/MS analytical method allowed us to analyze and quantify the mixture of micropollutants present in a complex matrix during 3 periods of the year with different weather conditions, from 5 sampling sites. Results showed that the highest concentrations of most of the present micropollutants are observed in October at ng/L, Moulin Noir sampling site found to contain the largest number and type of these pollutants, the WWTP was not efficient in the removal of the micropollutants present in water and the drinking water used from tab was totally safe from micropollutants. The calculation of the fluxes and estimation of the mass balance at the rivers confluence confirmed the good precision and reliability of our measurement methodology, and specify the most suitable site for water to be taken from to be used in the removal tests which was Moulin Noir. Having the appropriate water sample, an efficient iron impregnated Faujasite catalyst was developed and used in a photo-Fenton process for the micropollutant removal tests. After characterization and optimization of the different experimental factors using the 2 model macropollutants, phenol and diclofenac, the real tests were performed on real water samples from Moulin Noir. The results demonstrated the good efficiency of the photo-Fenton process with the cocktail of 21 micropollutants. Except for sulfamethoxazole and PFOA, the concentrations of all the other micro-contaminants became lower than the limit of quantification of the LC-MS/MS after 30 minutes or 6 hours of photo-Fenton treatment depending on their initial concentrations under the effect of both adsorption and Fenton mechanisms. Comparing the photo-Fenton process to heterogeneous photocatalytic degradation over TiO2, Faster micropollutants removal occurred with the zeolite
Wintenberger, Coraline. "Dynamique fluviale et végétation pionnière à la Salicaceae en rivière sablo-graveleuse : études in et ex situ de la survie des semis durant les premiers stades de la succession biogéomorphologique en Loire Moyenne." Thesis, Tours, 2015. http://www.theses.fr/2015TOUR4020/document.
Full textThe present study is focused on the three first stages: geomorphic, pioneer and biogeomorphic of the Fluvial Biogeomorphological Succession applied to a sandy-gravel bed lowland river: the Loire River (in its middle reaches). This work is based on both an in and ex situ approach. It analyses the recruitment and survival during their first stages of growth of two Salicaceae trees: Populus nigra L. and Salix alba L. developed on a non-migrating (forced) bar. The dynamics of this bar influences the survival potential of seedlings during floods. The seedlings adapt morphologically according to the sedimentary structure, and as a consequence, modify their survival potential. Three conceptual models detail: (i) the dynamics of a mid-channel forced bar during floods, (ii) the longitudinal evolution of the mortality of seedlings induced by the downstream fining of sediments, (iii) the sediment archiving and time needed to reach a pioneer island state from a non-migrating vegetated bar
Guillot, Marie. "Analyse rétrospective des relations nappe-végétation de sous-bassins versants forestiers de la rivière Leyre." Thesis, Bordeaux 1, 2011. http://www.theses.fr/2011BOR14427/document.
Full textIn the Landes de Gascogne area, the functioning of the shallow plio-quaternary water-table is tightly linked with the functioning of the top vegetation. In order to understand the variability of forest productivity at the landscape scale, there is a need to move forward the stand scale to the watershed scale. Part of this study was to setup hydrological equipment of paired-watershed, representative of the forested plain in the Leyre watershed, considering water-table level and hydrologic measurement. The selected sites were the Bouron watershed (Belin-Beliet) and the Tagon watershed (Biganos), which were contrastingly impacted by two storms within the last 10 years. The land-cover cartography was obtained with satellite, in-situ and statistical data, on a retrospective basis, accross the 1984-2010 period. Those maps give the evolution of the land use and the Pinus pinaster stand age. The reconstitution of the age structure thought time, converted to carbon and biomass stock, are showing the impact of a storm, comparing the control watershed to the damaged one. The link between forests and water-table was explored on : (1) the growth of trees developing in sites with contrasted water-table levels, by way of dendrological measurement and (2) the analysis of diurnal oscillation on the water-table level signal, attributed to vegetation removal. The understanding of the link between hydroclimatic data and wood production, i.e., ring width, shows that limitating factors should not be the same across different sites. In particular, water-table deeper than 3 meter is not a determinant resource for growth, but nutriment may be more limitating at those sites. On the other side, discharge of the water-table cannot be dissociated to evapotranspiration reprise. Oscillations in the diurnal signal of water-table level shows that this removal can be determinant, and deeper than expected according to the vegetation cover. The last part of this work build the basis of a future model, representing the coupling between vegetation and water-table at the watershed scale. The dynamic of the aquifer was simulated in permanent and transient state with the NEWSAM hydrogeological model (Ecole des Mines, Paris). Different processes were identified as key factor to explain water-table functioning, such as recharge effect, zone vadose impact and surface drainage. The recharge effect, coming from GRAECO, was particularly tested, thought a sensitivity analysis, in relation with growing proportion of young forest stand (less than 5 years old). Points to improve and refine are identified in order to perfect the two models used here
Deirmendjian, Loris. "Transfert de carbone le long du continuum végétation-sol-nappe-rivière-atmosphère dans le bassin de la Leyre (Landes de gascogne, SO France)." Thesis, Bordeaux, 2016. http://www.theses.fr/2016BORD0319/document.
Full textInland waters are a major component of the global carbon cycle. These systems receive a significant amount of carbon from aquatic and terrestrial sources. A part of this carbon is degassed in the atmosphere while another is exported to the oceans. We characterize the concentrations and transfers of all carbon forms at the groundwater-stream-atmosphere interface, in a temperate, forested and sandy lowland watershed, where hydrology occurs in majority through drainage of groundwater. We monitored contrasting study site representative of the diversity of the ecosystem, from groundwater to river mouth, with different proportion of land use. DOC is exported in majority during high flow periods whereas the same amount of DIC is exported between high and base flow periods.Terrestrial carbon that originates from soils forests is the major source of carbon in surface waters but only 3% of the NEE is exported. Land use modifies locally the different forms of carbon in streams but at the basin scale forests predominate. We quantify the degassing ofCO2 based on fairly well balanced isotopic mass balance. About 75% of the total degassing occurs in first and second order streams, which behave as hotspots for CO2 degassing. This work contributes to a better definition of the role of streams and rivers in the global carboncycle. Specifically, this work enhances understanding on the proportion of CO2 pumped byan ecosystem and then exported to the river system, as well as the fate of this carbon downstream
Galvin, Yannick. "Hydrobiologie d'une rivière aménagée : le moyen Verdon (Alpes de Haute Provence) : hydrochimie et macroinvertébrés benthiques d'un tronçon à débit régulé, impacts de l'aménagement sur l'hydrosystème." Aix-Marseille 3, 1989. http://www.theses.fr/1989AIX30084.
Full textPoligot, Stéphanie. "Modélisation des échanges entre nappe et rivière : application au Val d'Avaray : influence sur la stabilité et l'érosion des berges." Compiègne, 2002. http://www.theses.fr/2002COMP1389.
Full textDarmendrail, Dominique. "Filtration géochimique de métaux lors de leur transfert d'une rivière vers une nappe alluviale : applications à la nappe des alluvions du Rhône (69) et de la Deule (59)." Bordeaux 3, 1987. http://www.theses.fr/1987BOR30200.
Full textBrun, Alexandre. "Les politiques territoriales de l'eau en France : le cas des contrats de rivière dans le bassin versant de la Saône." Phd thesis, INAPG (AgroParisTech), 2003. http://pastel.archives-ouvertes.fr/pastel-00000554.
Full textDescroix, Aurélie. "Croissance et régime alimentaire des juvéniles de Saumon atlantique (Salmo salar L. ) dans la rivière Allier : origine et transferts des acides gras dans la chaîne trophique." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2009. http://tel.archives-ouvertes.fr/tel-00725306.
Full textEstournes, Guilhem. "Architectures et facteurs de contrôle des bassins quaternaires immergés du précontinent armoricain : exemples de la paléovallée d'Étel (Bretagne Sud) et du bassin des Ecrehou (Golfe normand Breton)." Lorient, 2011. http://www.theses.fr/2011LORIS240.
Full textThe shortage of local aggragate ores (more particularily from alluvial origines) leads industrial companies to prospect for new potential ores including marine areas. The inner continental shelf (0-60 m) corresponds to the offshore extension of continental landscapes, reworked by eustatic, climatic and tectonic variations during the Quaternary (2. 6 Myrs-Today). The objective of this thesis is to characterize both the morphology and sedimentary filling of these basins, making the part of eustatic, climatic and tectonic influences on sediments onset. Two areas, chosen because of their good geological context representativeness, have been studied by seismic reflexion, surfacial coring and 3D topographic and sedimlentary reconstitutions. These two areas are 1) the Palaeo Valley of the Etel River (Southern Brittany) and 2) the Ecrehou Basin in the Normand-Breton Gulf. This study consists in an exploration of poorly known areas, carrying interests for both academic research (continental margins knowledge) and industrial sector (new potential material ores). It appaears that Atlantic inner shelf morphology corresponds to the remnant of fluvial topographies (Mid Pleistocene) several times reused since their onset and showing a poor sediments preservation capacity. The Etel Palaeo valley is only filled with transgressive tidal to marine deposits dated between 9 Kyrs BP to present. The onset of these valleys seems to respond to the evolution of quaternary climate dynamic (Mid Pleistocene Transition) and high frenquency eustatic variations since this period. In the Normand-Breton Gulf, the basin sedimentary filling presents a far better preservation capacity (preserving Early and Late Pleistocene deposits) associated to more active tectonic pattern than the Atlantique margin. This filling is dominated by tidal environnements. Basically, at the scale of the whole Armorican Massif, the tectonic forcing seems to modulate the effect of eustatic variations on sediment preservation. This latter is in any case maximum during transgressions and minimum or negative during sea lowstand periodes
Labarthe, Baptiste. "Quantification des échanges nappe-rivière au sein de l’hydrosystème Seine par modélisation multi-échelle." Thesis, Paris Sciences et Lettres (ComUE), 2016. http://www.theses.fr/2016PSLEM090/document.
Full textGiven the current climate and anthropogenic evolutions, water management becomes one of the greatest challenges of the 21st Century. For that purpose, by identifying hydraulic continuity between surface and subsurface water, the concept of integrated water management can be introduced. In this work this management concept is applied on the Seine basin by quantizing hydrological processes occuring at the nested stream-aquifer interface. The implementatin of the nested interface concept can bedone through multi-scale modeling. This modelling procedure, aimed at embody the local characteristics of the interfaces (such as structural or hydrodynamic heterogeneities) in large scale models. A multi-scale modelling procedures is applied to the regional Seine basin model (70000 km²) in order, to study the hydrodynamic behaviour of the Bassée alluvial plain, and to quantify the stream-aquifer exchanged fluxes at the basin scale. The modelling protocol is initiated with regionals fluxes estimation over Seine hydrosystem. Regional fluxes consistency are assured by a two-step calibration procedure of fully coupled models. Then, the local characteristics of the Bassée alluvial plain, are implemented in the regional model by nested modelling methodology associated with upscaling procedure of hydraulics properties. Finally, the multi-scale modelling procedure lead to quantify distributed stream-aquifer exchanged water fluxes over 83% of the natural river network of the Seine basin, and thus, achieve to answer the integrated water resources management recommandations of the water framework directive
Buisson, Juliette. "Hydrobiologie du massif du Vercors (Préalpes calcaires) et d'une rivière type : le Furon : Ecologie des diptères Chironomidae du Furon et de quelques cours d'eau pollués." Université Joseph Fourier (Grenoble ; 1971-2015), 1986. http://www.theses.fr/1986GRE10055.
Full textRollo, Nicolas. "Modélisation des dynamiques de pollution diffuse dans le bassin versant de la rivière d'Auray : quantification, caractérisation et gestion des apports nutritifs terrigènes." Phd thesis, Université de Nantes, 2012. http://tel.archives-ouvertes.fr/tel-00697867.
Full textMichler, Luc. "Impacts hydromorphologiques et sédimentaires du décloisonnement de l'Yerres : identification, quantification, spatialisation." Thesis, Sorbonne Paris Cité, 2018. http://www.theses.fr/2018USPCC074/document.
Full textThe Yerres catchment (1030 km²) is located at the southeast border of the Paris conurbation and spreads on the low relief Brie Plateau. Topographical characteristics and geographical location provide the Yerres River with a very low gradient (0,009 %) and a high longitudinal partitioning (0,5 dam/km). Cross-structures are either ancient (medieval watermills) or more recent (mobile dams) and often associated with river channelling. Dam perturbation on sediment fluxes and bed morphological modifications have led to a significant degradation of the river fluvial dynamic and morphological diversity. In this context of a much artificialized low-energy river (< 10 W/m²), we aimed at assessing the efficiency of three mobile dam (h < 3 m) lowering on bed hydromorphological restoration. For that purpose, high spatial and temporal resolution monitoring of bed topography and sediment-size were carried out between 2015 and 2017, in order to document fluvial system adjustment to dam lowering through morphological and grain-size change. Before dam lowering, fine sediment had mainly deposited in channel margins forming mud banks, except for Ozouer impoundment (the more upstream study site). For the latter, sand sedimentation had been extended to the whole channel width. After dam lowering, it also experienced the more pronounced morphological change, characterised by significant bed erosion upstream and little bed aggradation downstream. However, morphological response to dam lowering remained moderate given the high discharges over the monitoring period. Channel adjustments also appeared to be linked to sand-bed. Thus, while dam lowering undoubtedly improve hydro-eco-morphological conditions (i.e. flow facies diversity), physical restoration of the highly degraded Yerres riverbed is restricted to the sand bed material transport restoration
Du, Mingxuan. "Modélisation intégrée des écoulements souterrains et des échanges nappe-rivière dans la basse vallée du Var." Thesis, Université Côte d'Azur (ComUE), 2016. http://www.theses.fr/2016AZUR4107/document.
Full textGroundwater modeling with deterministic model is a complicated process, especially in complex aquiferswhere the quantity and the quality of the measuted data arc not satisfying. The unconfined alluvialaquifet is the main water resource in the lower valley of Vat river, Ftench Riviera, but it faces a thteat ofshortage and pollution. Despite numerous previous studies, the dynamics of the gtoundwater flow in thealluvial aquifer and the characteristics of the rivet-aquifer exchanges ¿re s':ll partially unknown.Therefore the local u/ater management service requires a decision support system PSS) based onnumerical models to ensure a better groundwater management. A hydraulic model is set up withFEFLO!ø software by considedng ptecþitation, evâpotranspiration, gtoundwatet exftacdon and rivetaquiferexchanges. The non-documented groundwater exttaction fot agticultural use and the transferrates in the dverbed along the river have been calibtated. The model has been validated with asimulation of 7266 days. The model is applied to simulate the scenarios of flood and drought events, thepollution events in the unconfined aquifer in the valley and the seawater inrusion in the estuary of Yarriver. These case studies contributes to increase the knowledge of the aquifet. A fust conception of theDSS tool is presented as the last example of model application. A coupling interface is developed thanksto aJava which enables an automatic exchange of data between the groundwater flow model and thesurface wâter flow model built with MII(E2ltr}'/. More tests should be done to validate the couplinginterface
Creston, Saphyr. "René-Yves Creston (1898-1964) : l’artiste, l’ethnologue, le théoricien." Thesis, Paris 4, 2017. http://www.theses.fr/2017PA040012.
Full textThis study approaches the career and work of René-Yves Creston : this artist, who, in the twenties co-created the group of Seiz Breur. Strongly involved in local cultural life, the group-artists took part in the revival of decorative crafts in Brittany: engraving, painting, earthenware, furniture, so many areas in which they affect the regional aesthetics of the first mid-twentieth century, in the same spirit as Arts and Crafts or Zakopane school or other european movements. Taking part in parisian intellectual life, René-Yves Creston became a leader, without equal organiser so he leaded Seiz Breur to take part in famous international exhibitions. In the thirties, his own interest for the maritim world leads him to take part in 1933 in a trip to Greenland. He then discovered the ethnographic practice. He joins then the ethnological institute and at the end of thirties follows Marcel Mauss’s lessons and fit in “musée de l’Homme” for which he was involved in a mission in Feröe islands. During the world war two, he took part in setting up the “Réseau du musée de l’Homme”. He then follows on his searches about breton ethnography. After the war, Georges Henri Rivière introduced him in thesociety-museums circles. René-Yves Creston leaded to many collections in breton museums and Arts and popular Traditions museum. Deeply involved in the study of brittany, he carries on taking part in european maritim ethnology studies. From the end of 19th century to second part of 20th, this work reads the process of this man, starting as an artist, who becomes an ethnologist using his realism in art as a tool for his study of man
Deperne, Marcel. "La Belle Rivière dans l'espace atlantique, 1783-1815 : migrations commerciales francophones entre Pittsburgh (PA) et Henderson (KY)." Thesis, La Rochelle, 2019. http://www.theses.fr/2019LAROF003.
Full textHistoriography often neglects the part of Francophone migrants in the young American republic, merely following the route of the most famous political exiles banished by the French Revolution and the Restoration, or the Utopians dreaming to establish a new society in the New World. In the Early Republic faced with the thorny problem of slavery, the agony of colonial empires and the birth of entrepreneurship and capitalism, many migrants tried fortune beyond the Atlantic Ocean, between 1783 and 1815, establishing in the “Creole corridor” powerful commercial, cultural and religious ties between east coast, New Orleans, West Indies and Atlantic space. This is the purpose of this discussion that borrows the path opened by the Atlantic history, and proposes, through the study of correspondence and archival resources, an innovative history of francophone business migrations from Pittsburgh to Louisville in the age of the Atlantic Revolutions
Barraud, Régis. "Vers un "tiers-paysage" ? Géographie paysagère des fonds de vallées sud-armoricaines. Héritage, évolution, adaptation." Phd thesis, Université de Nantes, 2007. http://tel.archives-ouvertes.fr/tel-00202359.
Full textQuilici, Hervé. "Comportement chimique du plomb dans l'environnement, cas du bassin de Strengbach (Vosges), cas de la Garonne à Toulouse." Toulouse 3, 2003. http://www.theses.fr/2003TOU30183.
Full textJourdain, Camille. "Action des crues sur la dynamique sédimentaire et végétale dans un lit de rivière à galets : l'Isère en Combe de Savoie." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAU002/document.
Full textMany rivers worldwide have seen vegetation establish within their beds throughout the 20th century. In the case of managed rivers, this trend is usually linked to direct geomorphological alterations (sediment mining, diking, etc.) as well as anthropic alterations of flow regime and sediment supply. These pressures have stabilized river beds, allowing vegetation to establish permanently. This vegetation increases the risk of flooding by decreasing flow velocities and increasing water levels. In addition, the associated reduction in availability of pioneer habitats characteristic of these stabilized environments typically degrades biodiversity. Managing hydrology in a way that would limit vegetation establishment on bars presents an interesting management option. In this context, our study was aimed at understanding the impacts of floods of varying magnitude on vegetation removal, as well as identifying and quantifying the underlying mechanisms. This work focused on the Isère River, a heavily managed gravel bed river located in the western French Alps.Vegetation removal was studied at the reach scale using hydrological data, aerial photographs, and topographic data available between 1996 and 2015. At the bar scale, field monitoring before and after floods from april 2014 to september 2015 allowed us to document the impact of floods on sediment mobility and vegetation. A 2D numerical model was used to document fine scale hydraulics.At the reach scale, we found a strong correlation between water volume flowing through the river channel and the amount of vegetation removal. Discharges with return intervals of less than one year seem to have an impact on vegetation removal. The main mechanism observed from aerial photographs was lateral erosion; surface processes were negligible in comparison. However, global vegetation removal was modest: since 1996, on average 3,4 % of vegetated area was removed annually. At the bar scale, our study period permitted monitoring of a series of high frequency floods (return interval < 1 year) and a 10-year food event. Only the largest flood partially removed pioneer vegetation from bars. Young vegetation removal occurred through four different mechanisms: 1) uprooting by surface scour > 20 cm, 2) burial under a thick layer of coarse sediments > 30 cm, 3) uprooting by a combination of surface scour and sediment deposition resulting in no net topographic change, and 4) lateral erosion of bars. Vegetation removal was always associated with significant sediment mobility.We conclude that on the Isere River a very important flood is required to remove vegetation by mobilizing bar surfaces. In contrast, high but not exceptional flows (return interval < 1 an) are capable of removing vegetation through lateral erosion. However, artificial floods alone are unlikely to maintain the full width of the channelized bed of the Isere River free of vegetation. In the future, vegetation removal needs to be studied in the context of alternate bar dynamics with or without vegetation. It seems necessary to consider sediment transport as well as hydrology to understand the overall dynamics of the bed
Elbaz, Françoise. "Apports fluviatiles et estuariens de plomb, cadmium et cuivre aux oceans : comparaison avec l'apport atmospherique." Paris 6, 1988. http://www.theses.fr/1988PA066223.
Full textGarguet-Duport, Bruno. "Fusion d'images et télédétection en écologie du paysage : application à l'étude structurale d'un corridor fluvial alpin." Grenoble 1, 1994. http://www.theses.fr/1994GRE10159.
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