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The dispersive mass transport in rivers has been investigated to improve the predictability of transport scenarios in case of accidental pollutant spills. In particular, the influence of dead-water zones, as they are given by groin fields, on the transport characteristics in the main stream has been analyzed. A literature review of detailed map material from the rivers Rhine, Waal and Elbe has been performed, in order to plan representative laboratory experiments. Typical aspect ratios of the groin fields as well as typical inclination angles have been summarized. Based on these results, experiments have been performed in a laboratory flume equipped with schematized groins. Within theses experiments the aspect ratio, the inclination angles as well as the groin field volume has been varied. Due to the fact that the flow is very shallow and, therefore, quasi two-dimensional, the flow velocities have been determined at the water surface, using a Surface Particle-Image-Velocimetry-System that has been developed for that purpose. Additional measurements, using a two-dimensional Laser-Doppler-Velocimeter, have been performed for resolving the velocity distribution over the water depth. With the help of these measurements it was possible to determine the typical recirculating flows in the groin fields as well as the coherent, horizontal eddies in the mixing layer between dead-water zone and main stream, that are governing the mass exchange. The high spatial and temporal resolution of the surface PIV measurements made it possible to estimate also the mass exchange between groin field and main stream. With the help of Planar-Concentration-Analysis, which is a method for determining depth-averaged planar concentration fields, it could be shown that the mass exchange between groin field and main stream increases with increasing length of the groin field. For these measurements a tracer injection device has been developed, that consists of a movable multi-port injection-box and vacuum-pressure-unit, which is able to produce instantaneously, homogeneous and reproducible concentration fields. Finally a Lagrangian-Particle-Tracking-Method was developed to transfer the results, obtained locally at single groin fields, into the overall transport characteristics in the far-field of pollutant spill scenario for a river system consisting of a series of groin fields. Through the implementation of a transient-adhesion-boundary, it was possible to parameterize the influence of groin fields on the longitudinal dispersion, the transport velocity and the skewness of the concentration distribution in the case of a pollutant spill.
pollutant transport --- Groin fields --- Lagrangian particle tracking --- dispersion
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Pollution --- Environmental protection --- Environmental Pollutants --- Environmental Microbiology --- Environmental Pollution --- Pollution, Environmental --- Soil Pollution --- Pollution, Soil --- Microbiology, Environmental --- Environment --- Pollutants --- Pollutants, Environmental --- Radiation Exposure --- Environmental Exposure --- microbiology --- Environmental Pollutant --- Pollutant --- Pollutant, Environmental --- Environmental Pollutants. --- Environmental Microbiology. --- Environmental Pollution.
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Understanding the societal impacts of, and improving resilience in response to Earth surface processes requires advancing and applying process sedimentology research in a wide range of environments. This means that these are exciting times for sedimentologists, as we have a growing range of tools, approaches and expertise to tackle some of the key challenges that face society; such as better understanding natural hazards, forecasting fluxes of contaminants through sediment transport pathways, and understanding the long-term transfer and storage of carbon. For instance, sedimentology has a key role in improving our understanding of both the frequency and impact of a wide range of geohazards that both directly and indirectly impact global communities, especially in more vulnerable Developing Countries. In particular, the links between cascades of hazards, and their response to anthropogenic changes are important but poorly understood. Recent advances in monitoring and analytical methods, as well as adaption of existing approaches, provide the opportunity to fill these outstanding knowledge gaps, as well as gaps in other areas, such as the dispersal of pollutants (e.g. microplastics, pesticides) in the natural environment. Understanding pollutant, and other important particulate (e.g. organic carbon) transport pathways, and their ultimate fates, requires detailed characterisation of the sedimentary processes within and between environments, over a wide range of timescales.
sedimentology --- society --- natural hazards --- pollutant dispersal --- carbon transfer and storage --- coastal change
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Environmental protection. Environmental technology --- Environmental Pollutants --- Environmental Pollution --- Environmental sciences --- Pollution --- Sciences de l'environnement --- Periodicals. --- Périodiques --- Environmental Health. --- Environmental Pollutants. --- Environmental Pollution. --- Environmental Sciences --- Environmental Planning & Studies --- General and Others --- Pollution (Air, Noise, Soil and Water) & Control --- Pollution, Environmental --- Soil Pollution --- Pollution, Soil --- Pollutants --- Pollutants, Environmental --- Radiation Exposure --- Environmental Exposure --- Environmental Health Science --- Health, Environmental --- Environmental Health Sciences --- Environmental Healths --- Health Science, Environmental --- Health Sciences, Environmental --- Healths, Environmental --- Science, Environmental Health --- Sciences, Environmental Health --- Ecology --- Environmental Pollutant --- Pollutant --- Pollutant, Environmental
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" ... international forum for publication of original research or review papers on any aspect of the occurrence of radioactivity in natural systems. Relevant subject areas range from applications of environmental radionuclides as mechanistic or timescale tracers of natural processes to assessments of the radioecological or radiological effects of ambient radioactivity."
Radioecology --- Radioactive pollution --- Environmental Pollutants --- Radioactive Pollutants --- Radioactivity --- Radiation, Background --- Radioécologie --- Pollution radioactive --- Fond de rayonnement --- Environmental Pollutants. --- Radioactive Pollutants. --- Radioactivity. --- Radioactive Disintegration --- Nuclear Decay --- Decay, Nuclear --- Disintegration, Radioactive --- Disintegrations, Radioactive --- Radioactive Disintegrations --- Radioactivities --- Pollutants, Radioactive --- Pollutants, Environmental --- Background radiation --- Environmental radioactivity --- Natural radiation --- Radiation, Natural --- Radioactivity, Environmental --- Nuclear pollution --- Radiation ecology --- Radiation --- Radiation Exposure --- Environmental Exposure --- Environmental Pollution --- Pollution --- Radioactive substances --- Radioactive waste disposal --- Ecology --- Radiobiology --- Pollutants --- Environmental Pollutant --- Pollutant --- Pollutant, Environmental
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The journal provides a unified platform for the international reporting of ground-breaking research results and reviews covering the fast-growing area of plastics research. Work across all length scales (macro, micro and nano) and heterogeneous pollutants will be considered
microplastics --- nanoplastics --- macroplastics --- plastic waste --- biodegradable materials --- Microplastics --- Nanoparticles --- Environmental Pollutants --- Plastics --- Matières plastiques --- Plastics. --- Plastic materials --- Plastic products --- Polymers --- Synthetic products --- Condensation products (Chemistry) --- Elastomers --- Plasticity --- Pollutants --- Pollutants, Environmental --- Environmental Pollutant --- Pollutant --- Pollutant, Environmental --- Radiation Exposure --- Environmental Exposure --- Environmental Pollution --- Nanocrystalline Materials --- Nanocrystals --- Material, Nanocrystalline --- Materials, Nanocrystalline --- Nanocrystal --- Nanocrystalline Material --- Nanoparticle --- Mesoplastics --- Plastic Microparticles --- Plastic Nanoparticles --- Mesoplastic --- Microparticle, Plastic --- Microparticles, Plastic --- Microplastic --- Nanoparticle, Plastic --- Nanoparticles, Plastic --- Plastic Microparticle --- Plastic Nanoparticle --- Microspheres
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Atmospheric chemistry.. --- Atmospheric deposition. --- Mediterranean Region. --- Air pollutant deposition --- Atmospheric fallout --- Atmospheric pollutant deposition --- Deposition of air pollutants --- Deposition of atmospheric pollutants --- Fallout, Atmospheric --- Sedimentation and deposition --- Air --- Atmospheric science --- Chemistry, Physical and theoretical --- Pollution --- Circum-Mediterranean countries --- Mediterranean Area --- Mediterranean countries --- Mediterranean Sea Region
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Environmental health --- Environmental monitoring --- Environmental Exposure. --- Environmental Monitoring. --- Environmental Pollutants --- Environmental health. --- Environmental monitoring. --- analysis. --- Biomonitoring (Ecology) --- Ecological monitoring --- Environmental quality --- Monitoring, Environmental --- Health --- Health ecology --- Bio-Monitoring --- Biologic Monitoring --- Biomonitoring --- Environmental Surveillance --- Monitoring, Biological --- Biological Monitoring --- Bio Monitoring --- Monitoring, Biologic --- Surveillance, Environmental --- Exposure, Environmental --- Environmental Exposures --- Exposures, Environmental --- Measurement --- Monitoring --- Health aspects --- Environmental aspects --- Environmental Exposure --- Environmental Monitoring --- analysis --- Applied ecology --- Environmental engineering --- Pollution --- Public health --- Health risk assessment --- Pollutants, Environmental --- Radiation Exposure --- Environmental Pollution --- Environmental Restoration and Remediation --- Ecological Parameter Monitoring --- Sentinel Species --- Pollutants --- Wastewater-Based Epidemiological Monitoring --- Environmental Pollutant --- Pollutant --- Pollutant, Environmental --- Environmental Sciences
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Toxicology --- Reproduction --- Environmental Pollutants --- Reproductive toxicology --- drug effects --- adverse effects --- Toxicology. --- Toxicologie de la reproduction --- Reproductive toxicology. --- adverse effects. --- drug effects. --- Evidence Based Toxicology --- Evidence-Based Toxicology --- Toxinology --- Based Toxicologies, Evidence --- Based Toxicology, Evidence --- Evidence Based Toxicologies --- Evidence-Based Toxicologies --- Toxicologies, Evidence Based --- Toxicologies, Evidence-Based --- Toxicology, Evidence Based --- Toxicology, Evidence-Based --- Human Reproductive Index --- Human Reproductive Indexes --- Reproductive Period --- Human Reproductive Indices --- Index, Human Reproductive --- Indexes, Human Reproductive --- Indices, Human Reproductive --- Period, Reproductive --- Periods, Reproductive --- Reproductive Index, Human --- Reproductive Indices, Human --- Reproductive Periods --- Pollutants, Environmental --- Pharmacogenetics --- Radiation Exposure --- Environmental Exposure --- Environmental Pollution --- Pollutants --- Environmental Pollutant --- Pollutant --- Pollutant, Environmental --- Toxicologie. --- toxicology. --- Chemicals --- Medicine --- Pharmacology --- Poisoning --- Poisons
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Water quality bioassay --- Water --- Microbiological assay --- Toxicity testing --- Environmental Monitoring. --- Environmental Pollutants. --- Environmental Pollution. --- Water Pollutants. --- Water Pollution. --- Eau --- Dosage microbiologique --- Toxicité --- Écotoxicologie --- Environnement --- Pollution --- Toxicology --- Qualité --- Essais biologiques --- Toxicologie --- Surveillance --- Thermal Water Pollution --- Water Pollution, Thermal --- Pollution, Thermal Water --- Pollution, Water --- Pollutions, Thermal Water --- Pollutions, Water --- Thermal Water Pollutions --- Water Pollutions --- Water Pollutions, Thermal --- Pollutants, Water --- Pollution, Environmental --- Soil Pollution --- Pollution, Soil --- Pollutants, Environmental --- Bio-Monitoring --- Biologic Monitoring --- Biomonitoring --- Environmental Surveillance --- Monitoring, Biological --- Biological Monitoring --- Monitoring, Environmental --- Bio Monitoring --- Monitoring, Biologic --- Surveillance, Environmental --- Poisons --- Toxicological testing --- Toxicology testing --- Assay, Microbiological --- Microbial assay --- Testing --- Environmental Pollutants --- Radiation Exposure --- Environmental Exposure --- Environmental Pollution --- Environmental Restoration and Remediation --- Ecological Parameter Monitoring --- Toxicology, Experimental --- Biological assay --- Hydrology --- Analysis --- Pollutants --- Wastewater-Based Epidemiological Monitoring --- Environmental Pollutant --- Pollutant --- Pollutant, Environmental
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