ANALYSE DE SERIES TEMPORELLES DE MESURES DE L’OXYGENE DISSOUS ET DU PH SUR LA LOIRE AU NIVEAU DU SITE NUCLEAIRE DE DAMPIERRE (LOIRET)
Analyse de séries temporelles de mesures de l’oxygène dissous et du pH sur la Loire au niveau du site nucléaire de Dampierre (Loiret) : compréhension des variations temporelles des teneurs en oxygène dissous et du pH en relation avec des données hydrométéorologiques 1. Introduction 2. Site et données d’étude 2.1. Site 2.2. Les données de […]
EVALUATION OF AN OFF SHORE DISPOSAL SITE IN THE LOIRE ESTUARY THROUGH FIELD MONITORING AND 3D NUMERICAL MODELING
Evaluation of an off shore disposal site in the Loire estuary through field monitoring and 3D numerical modeling Introduction Preliminary study Field campaign – Field campaign at fixed point – Field campaign: instruments on a survey vessel – Field campaign with fluorescent tracer – Bathymetric surveys 3D hydro-sedimentary model – Using an existing Telemac 3D […]
DYNAMIQUE DE LA CREME DE VASE DANS L’ESTUAIRE DE LA LOIRE
Dynamique de la crème de vase dans l’estuaire de la Loire 1. Introduction 2. Matériel et méthodes 2.1. Base de données 2.2. Analyse des faciès acoustiques 3. Résultats 3.1. Partie centrale 3.2. Partie externe 4. Conclusions 5. Références bibliographiques
DYNAMIQUE SEDIMENTAIRE DES VASIERES INTERTIDALES DE L’ESTUAIRE DE LA LOIRE
Dynamique sédimentaire des vasières intertidales de l’estuaire de la Loire 1. Introduction 2. Site d’étude 3. Méthodologie 4. Résultats 4.1. Caractéristiques texturales des sédiments de surface 4.2. Réponse de l’interface sédimentaire à l’action des vagues 4.3. Influence de la marée et des débits fluviaux sur la stabilité des vasières 5. Discussion et conclusions 6. Références […]
COUPLED 3D MODELING OF TURBIDITY MAXIMUM DYNAMICS IN THE LOIRE ESTUARY, FRANCE
Coupled 3D modeling of turbidity maximum dynamics in the Loire estuary, France Introduction Objectives of the model Model description Hydrodynamic calibration Salinity calibration – Classical mixing length and K-epsilon models – The multilayer mixing length Suspended sediment transport and bed consolidation model – Deposition rate and setting velocity – Verification of the suspended sediment transport […]
AN INNOVATIVE BIVARIATE APPROACH TO DETECT JOINT TEMPORAL TRENDS IN ENVIRONMENTAL CONDITIONS: APPLICATION TO LARGE FRENCH RIVERS AND DIADROMOUS FISH LIFE HISTORY TRAITS
An innovative bivariate approach to detect joint temporal trends in environmental conditions: application to large French rivers and diadromous fish life history traits 1. Introduction 2.1. Material and methods 2.1. Overview of study sites 2.2. Water temperature and discharge times-series 2.3. Statistical analyses to detect joint temporal trends 3. Results 4. Discussion 4.1. Long-term changes […]
INFLUENCE OF MORPHOLOGICAL CHANGES ON SUSPENDED SEDIMENT DYNAMICS IN A MACROTIDAL ESTUARY: DIACHRONIC ANALYSIS IN THE SEINE ESTUARY FROM 1960 TO 2010
Influence of morphological changes on suspended sediment dynamics in a macrotidal estuary: diachronic analysis in the Seine Estuary (France) from 1960 to 2010 1. Introduction 2. Historical development of the lower Seine estuary 2.1. Study area 2.2. Historical development 3. Numerical model setup 3.1. Hydrodynamic model 3.2. Sediment model 3.3. Model forcing and diachronic scenarios […]
A SYSTEMATIC APPROACH TO ASSESSING THE SENSITIVITY AND VULNERABILITY OF WATER AVAILABILITY TO CLIMATE CHANGE IN EUROPE
A systematic approach to assessing the sensitivity and vulnerability of water availability to climate change in Europe 1. Introduction 2. Materials and methods 2.1. Modeling water availability 2.2. Modeling anthropogenic water use 2.3. Model calibration 2.4. Model validation 2.5. Climate impact response surfaces 2.6. Spatial-temporal aggregation and selected river basins 2.7. Sensitivity assessment and sensitivity […]
GLOBAL RIVER TEMPERATURES AND SENSITIVITY TO ATMOSPHERIC WARMING AND CHANGES IN RIVER FLOW
Global river temperatures and sensitivity to atmospheric warming and changes in river flow 1. Introduction 2. Data and methods 2.1. River temperature and discharge Data 2.2. Air temperature data 2.3. The nonlinear water temperature regression Model 2.4. Model application and validation 2.5. Sensitivity to increases in air temperature and changes in river discharge 3. Performance […]
DU DECLIN D’UNE ZONE HUMIDE A SA RECONNAISSANCE PATRIMONIALE : L’EVOLUTION RECENTE DU MARAIS DE GREE (LOIRE-ATLANTIQUE)
Du déclin d’une zone humide à sa reconnaissance patrimoniale : l’évolution récente du marais de Grée (Loire-Atlantique) Introduction Une zone humide tributaire du régime hydrologique de la Loire jusqu’en 1991 – Une dépression inondable en bordure de la Loire – Un fonctionnement hydrologique naturel jusqu’en 1991 Une hydrologie perturbée à partir des années 1970 – […]