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Academic literature on the topic 'Sédiments fluviaux – Rhône, Delta du (France)'
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Journal articles on the topic "Sédiments fluviaux – Rhône, Delta du (France)"
Provansal, Mireille, Claude Vella, Gilles Arnaud-Fassetta, François Sabatier, and Grégoire Maillet. "Role of fluvial sediment inputs in the mobility of the Rhône delta coast (France) / Participation des apports sédimentaires fluviaux à la mobilité du littoral du delta du Rhône (France)." Géomorphologie : relief, processus, environnement 9, no. 4 (2003): 271–82. http://dx.doi.org/10.3406/morfo.2003.1190.
Full textDissertations / Theses on the topic "Sédiments fluviaux – Rhône, Delta du (France)"
Maillet, Grégoire Marie. "Relations sédimentaires récentes et actuelles entre un fleuve et son delta en milieu microtidal : exemple de l'embouchure du Rhône." Aix-Marseille 1, 2005. https://tel.archives-ouvertes.fr/tel-00011967.
Full textSabatier, François. "Fonctionnement et dynamiques morpho-sédimentaires du littoral du delta du Rhône." Aix-Marseille 3, 2001. http://www.theses.fr/2001AIX30103.
Full textThis work, divided, into three parts, deals with Morpho-sedimentary working and Dynamics of the Rhone delta. The first part, Present Rhone Delta coastline working context, reminds the historical formation of the delta for the last 6,000 yr-BP which inherited sedimentary features have important impacts on the modem dynamics. Follows a summary of marine meteorological forcings which are responsible for the littoral evolution. The second part, Macro spatio temporal scale coastline morphodynamics, traces the reconstruction, from 1895 to 2000, of the coastline position through topographic evaluations by DGPS, aerial photographs analysis and bathymetric profiles processing. The littoral cells not only display longitudinal sediment transport but also off shore transport in front of sections under erosion while the emerged domain only provides a small contribution to the global budget. The third part, Morpho-dynamics in a short time period, sedimentary transports simulations and coastal protection, is devoted to the overall processes in a short term events. Topographic and bathymetric profiles were taken twice a month during on year. They displayed seasonal changes of the berm under storm and off shore wind influence. .
Georges, Karine. "Méthode de traitement statistique appliquée à l'exoscopie des quartz : Environnements fluviaux et littoraux de Provence." Aix-Marseille 1, 2004. http://www.theses.fr/2004AIX10040.
Full textTeles, Vanessa. "Construction de réservoirs aquifères alluviaux par modèle génétique de mise en place des sédiments." Paris 6, 1999. http://www.theses.fr/1999PA066494.
Full textAntonelli, Christelle. "Flux sédimentaires et morphogénèse récente dans le chenal du Rhône aval." Aix-Marseille 1, 2002. http://www.theses.fr/2002AIX10058.
Full textBarreau, Christine. "Etude de la matiere organique associee aux suspensions fluviales : application a des fleuves de climats tempere et intertropical." Paris 6, 1992. http://www.theses.fr/1992PA066031.
Full textBruzzi, Carole. "Les tempêtes et l'évolution morphosédimentaire des plages orientales du delta du Rhône." Aix-Marseille 1, 1998. http://www.theses.fr/1998AIX10051.
Full textLansard, Bruno. "Distribution et remobilisation du plutonium dans les sédiments du prodelta du Rhône (Méditerranée nord-occidentale)." Aix-Marseille 2, 2004. https://tel.archives-ouvertes.fr/tel-00007417.
Full textRaccasi, Guillaume. "Mutations géomorphologiques récentes du Rhône aval : recherches en vue de la restauation hydraulique et de la gestion des crues." Aix-Marseille 1, 2008. https://tel.archives-ouvertes.fr/tel-00321723.
Full textAit, ballagh Fatima Ezzahra. "Dynamique du phosphore dans les sédiments à l’interface fleuve-mer : couplage modèle – données." Electronic Thesis or Diss., université Paris-Saclay, 2020. http://www.theses.fr/2020UPASV020.
Full textPhosphorus (P) is an essential nutrient for life, playing a key role in the primary production regulation at the river-sea interface, and closely to carbon and nitrogen global cycles. The burial of phosphorus in sediments of the river-sea interface occurs in association with organic matter and mineral particles. This burial represents the long-term removal pathway for the phosphorus. However, sediments role in dissolved inorganic phosphorus (DIP) recycling, is poorly quantified in eutrophic estuaries. Therefore, the main purpose of this thesis is to refine our understanding about sediments response to DIP recycling in Elorn and Aulne estuarine sediments (Brittany, France). In addition, we aim to contrast it with deltaic sediments (Rhône River delta) in the oligotrophic Mediterranean Sea. Secondly, all these ecosystems are highly dynamic, characterized by intense loads of organic matter and nutrients (N, P), leading to their intense fall on the sea floor, burial below the sediment-water interface (SWI) and mineralization. Therefore, involved biogeochemical processes can change largely the chemistry of upper layer of these sediments. We aim to clarify and to quantify the depth sequences of diagenetic processes, controlling the fate of sedimentary organic matter, transformation of phosphorus and induced DIP fluxes to the overlying water. To this end, we used a coupled field data with an existing model (OMEXDIA), extended with phosphorus (P) benthic cycle, to study P dynamics and to evaluate the sediments capacity as sinks or sources of P in the eutrophic Elorn and Aulne estuaries and the Rhône River prodelta. First of all, the OMEXDIA-P model was fitted to the porewater (oxygen, nitrate, ammonium, Oxygen Demand Units (Mn2+, Fe2+ and H2S, reduced during the anoxic mineralization; ODU) and DIP) and solid (organic P, Fe-bound P and Ca-bound P) data from four seasons (February, May, July and October 2009) in upstream, midstream and downstream stations of Elorn and Aulne estuaries. Secondly, the model was fitted to the same state variables, in addition to sulfate and dissolved inorganic carbon (DIC) for nine stations located in Rhône River outlet, prodelta and its adjacent continental shelf and sampled in May 2018. Both model’s applications showed a good agreement with the vertical distribution of porewater and solid phases in all stations and seasons. The combined use of these two datasets with the present model revealed that organic C fluxes deposited in the SWI of Elorn and Aulne estuaries (23 to 98 mmol m-2 d-1) and Rhône River prodelta (10 to 160 mmol m-2 d-1) were intense, especially in the River outlet. Therefore, the organic P mineralization represented the main source of internally produced DIP in both estuaries (77% of total DIP production) and in Rhône River prodelta (>90%). The contribution of mineralization pathways highlighted an increase of anoxic mineralization contribution due to saline gradient from upstream to downstream estuaries. While this mineralization pathways showed a decrease from Rhône River outlet to the continental shelf, as a function of the decrease of organic matter inputs with distance. The model’s calculation of sedimentary P budget indicated also that Fe-bound P played a key role in the P cycle, by retaining DIP in sediments from diffusion to overlying water and promoting the Ca-bound P precipitation. Moreover, Fe-bound P represented an additional source of DIP in sediments, especially in Elorn and Aulne estuaries. The largest proportion of released DIP was recycled to overlying water in these estuarine (85%) and deltaic (72%) sediments, while the burial as an authigenic Ca-bound P was a minor fraction. Overall, the model’s results presented here also demonstrated that these estuarine and deltaic sediments played a key role in the benthic P cycle and acted as sources of DIP to the water column. Moreover, the internally produced DIP inputs in Elorn and Aulne sediments was higher the external inputs