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Hydrochemistry of pore water from fine-grained sediments (clay, silt, peat) in the southern part of the western Belgian coastal plain: the Yser plain
Zeuwts, L.; Lebbe, L.; De Breuck, W. (1989). Hydrochemistry of pore water from fine-grained sediments (clay, silt, peat) in the southern part of the western Belgian coastal plain: the Yser plain, in: De Breuck, W. et al. (Ed.) Proceedings of the 10th Salt-Water Intrusion Meeting Ghent (Belgium), 16-20 May 1988. Natuurwetenschappelijk Tijdschrift, 70(1-4): pp. 95-106
In: De Breuck, W.; Walschot, L. (Ed.) (1989). Proceedings of the 10th Salt-Water Intrusion Meeting Ghent (Belgium), 16-20 May 1988. Natuurwetenschappelijk Tijdschrift, 70(1-4). Natuurwetenschappelijk Tijdschrift: Gent, Belgium. 408 pp., more
In: Natuurwetenschappelijk Tijdschrift. L. Walschot/Natuur- en Geneeskundige Vennootschap: Gent. ISSN 0770-1748, more
Peer reviewed article  

Available in  Authors 
Document type: Conference paper

Keywords
    Clays; Peat; Pore water; Sediments; Silt; Belgium, West Coast [Marine Regions]

Authors  Top 
  • Zeuwts, L.
  • Lebbe, L., more
  • De Breuck, W., more

Abstract
    In coastal areas, and certainly in the Belgian coastal plain, hydrochemical investigations are impeded by the presence of fine-grained sediments such as clay, silt and peat. Resistivity measurements in boreholes have, until present, only been calibrated for sandy formations. The relationship between the resistivity and the pore-water quality in fine-grained sediments is not clear. Representative groundwater samples from these formations are difficult to obtain. In this paper a fast and effective method for obtaining groundwater samples from fine-grained sediments is described: the high pressure filtration technique. The method is applied to a study area in the western Belgian coastal plain : the Yser plain. The pore-water samples thus obtained were used to calibrate the borehole resistivity measurements in fine-grained formations. The results of the chemical analysis of the pore-water samples have led to a better understanding of the chemical and physical processes influencing groundwater quality.

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