Description: Das Projekt "NOIRAIGUE - Teilprojekt A: Beschreibung und Quantifizierung des Oberflaechen- und Grundwassersystems" wird vom Umweltbundesamt gefördert und von Universite de Neuchatel, Institut de Geologie, Centre d'Hydrogeologie durchgeführt. Colloids and particles are recognize as a major vector of pollutant transport. In this project, we focus on the influence of the water cycle on colloids and particles dynamic in a karstic aquifer covered by peat and agricultural land. We want to determine the hydro geological situations which deliver the most important fluxes of colloids. On one hand, we presently study the basin by field exploration and geophysical techniques to describe the major pass ways of water from atmosphere to spring. This should allow the delimitation of areas generating the most colloids. On the other hand we follow the particle distribution (PSD, from 0.05 to 60 mym) in water at different levels of the Noiraigue basin using many methods. The PSD is highly influenced by discharge both in the Bied brook and in the Noiraigue spring. More results should allow the description of the physical factors governing the movement of each size fraction of colloids. Complementary information: Noiraigue: Subproject A: 'Characterisation and quantification of the surface and groundwater system': Colloids and particles are recognized as a major vector of pollutant transport. In this project, we focus on the influence of the water cycle on colloids and particles dynamic in a karstic aquifer covered by peat and agricultural land. We want to determine the hydro geological situations which deliver the most important fluxes of colloids. On one hand, we presently study the basin by field exploration and geophysical techniques to describe the major pass ways of water from atmosphere to spring. This should allow the delimination of areas generating the most colloids. On the other hand, we follow the particle distribution (PSD, from 0.05 to 60 Nanometers) in water at different levels of the Noiraigue basin using many methods. The PSD is highly influenced by discharge both in the Bied brook and in the Noiraigue spring. More results should allow the description of the physical factors governing the moment of each size fraction of colloids. Noiraigue: Subproject B (B. Kubler): 'Organic and mineral colloidal particles in water from swamp soils to spring in karst system': Colloids and particles are recognized as a major vector of pollutant transport. This project aims to characterize these colloids in soil, groundwater and rivers of the Noiraigue spring basin. We determine the particle size distribution in water using many different methods (filtration, ultra centrifugation, laser sizer, chromatography, electronic microscopy) in order to perfect a methodology applicable to field.
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Bach ? Fluss ? Laser ? Mineralboden ? Bodenwasser ? Hydrogeologie ? Kolloid ? Partikelgrößenverteilung ? Quellwasser ? Torf ? Oberflächenwasser ? Karstwasser ? Wasserkreislauf ? Karstgebiet ? Ackerland ? Monitoring ? Naturwissenschaft ? Bestimmungsmethode ? Schadstoffausbreitung ? Studie ? Mikroorganismen ? Chromatografie ? Grundwasser ? Wasser ? Boden ? Zentrifugation ? Geologie ? Grundwasserleiter ? Atmosphäre ? Mineral ? Ökosystem ? Partikel ? Datenerhebung ? Landwirtschaftliche Fläche ? Quelle [Gewässer] ? problematic substances ? Wasserbewegung ? biogeochemical processes ? Noiraigue-Bassin ?
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 1993-01-01 - 1995-12-31
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