CONVERGENCE OF ESTUARINE CHANNELS
Convergence of estuarine channels 1. Introduction 2. Observed convergence length 3. Tidal asymmetry 4. Sediment transport 5. Sediment transport model 6. Equilibrium condition 7. Hydrodynamic model 8. High-water and low-water propagation speeds 9. Representative river discharge 10. Comparison with observed convergence lengths 11. Morphodynamic feedback 12. The overall sediment balance 13. Discussion 13.1. Uncertainties in […]
NANTES SAINT-NAZAIRE PORT PASSEPORT 2017
(dossier articles) Nantes Saint-Nazaire Port Passeport 2017 Bienvenue ! Les activités Saint-Nazaire Montoir-de-Bretagne Donges Le Carnet Les sites en amont
EVOLUTION DES PRINCIPAUX FLUX DE NUTRIMENTS A LA MER
Évolution des principaux flux de nutriments à la mer DOC1 2013 DOC2 2015 DOC1 2013 Analyse globale Analyse par façade – Le cas de flux à la mer d’azote lié aux nitrates – Le cas des flux à la mer de phosphore Pour en savoir plus : corrélations entre débit des fleuves et flux de […]
FIELD EVIDENCE OF BIRD POISONINGS BY IMIDACLOPRID-TREATED SEEDS: A REVIEW OF INCIDENTS REPORTED BY THE FRENCH SAGIR NETWORK FROM 1995 TO 2014
(dossier articles) Field evidence of bird poisonings by imidacloprid-treated seeds: a review of incidents reported by the french SAGIR network from 1995 to 2014 Introduction Material and methods – Functioning of the SAGIR network – Necropsy en residue analysis – Data analysis – Diagnosis of poisoning Results – Incidents involving imidacloprid – Temporal distribution of […]
DECRET DE L’ESTUAIRE DE LA LOIRE DU 25 AVRIL 2004
(dossier articles) Décret de l’estuaire de la Loire du 25 avril 2004
LA DISPARITION D’UN DERNIER PORT DE LOIRE… ?
La disparition d’un dernier port de Loire… ? 1. Un siècle d’envasement de la Loire 2. Création de la centrale électrique EDF de Cordemais 3. Évolution des fonds du bras de Cordemais, de 1969 à 1999 4. Évolution du parc de production de la centrale EDF et perspective d’avenir 5. Conclusions
NATURAL RADIONUCLIDES AS TRACERS OF THE DISPERSAL OF DREDGE SPOIL DUMPED AT SEA
(dossier articles) Natural radionuclides as tracers of the dispersal of dredge spoil dumped at sea 1. Introduction 2. Objectives 3. Methods 3.1. Survey 3.2. Laboratory work 3.3. MEDUSA data processing 3.4. Mass balance 4. Results and discussion 4.1. Radionuclide distributions 4.2. Radiometric sediment characterisation 4.3. Mud distribution 4.4. Mass-balance equation 5. Conclusions and outlook Acknowledgements […]
RADIOMETRIC SAND-MUD CHARACTERISATION IN THE RHINE-MEUSE ESTUARY
(dossier articles) Radiometric sand-mud characterisation in the Rhine-Meuse estuary – Part A : fingerprinting Part A – Fingerprinting 1. Introduction 2. Geographical setting 3. Fingerprinting 3.1. Sampling strategy 3.2. Treatment of samples 3.3. Analytical techniques 3.4. Assessment of fingerprints 4. Radiometric characterisation of the Rhine-Meuse sediments 5. Summary and conclusions Acknowledgements References Part B – […]
SPECTRAL SIGNATURE OF HIGHLY TURBID WATERS – APPLICATION WITH SPOT DATA TO QUANTIFY SUSPENDED PARTICULATE MATTER CONCENTRATIONS
(dossier articles) Spectral signature of highly tubid waters – Application with SPOT data to quantifiy suspended particulate matter concentrations 1. Introduction 2. The study area 3. Measurements 3.1. In situ measurements 3.2. Satellite data and atmospheric corrections 4. Spectral reflectance model 4.1. Theory 4.2. Reflectance model 5. Results 5.1. Spectral signature of highly turbid waters […]
BATHYMETRIC MAPPING BY SPOT IMAGES TO QUANTIFY SAND MOVEMENTS IN THE TIDAL INLET OF ARCACHON (FRANCE)
(dossier articles) Bathymetric mapping by SPOT images to quantifiy sand movements in the tidal inlet of Arcachon (France) 1. Introduction 2. Method 2.1. Bathymetry 2.2. Sediment movements 3. Results 3.1. Variation of the amount of light with depth 3.2. Calibration 3.3. Sand movements