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soils (1)
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soils
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soils (1)
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Tinglev Denmark
Multifrequency Airborne EM Surveys—A Tool for Aquifer Vulnerability Mapping
Introduction: Vulnerability Maps Based on Electrical Conductivity Concepts for vulnerability maps The vulnerability of an aquifer can be defined by “How severe are the likely consequences of pollution loading?” (Lobo-Ferreira, 1997). The lateral distribution of the vulnerability, as shown in vulnerability maps, is an important parameter for groundwater management and planning. To ensure the water supply for coming generations, vulnerability mapping should not be restricted to areas with aquifers actually in use. This is the message of the new groundwater regulations of the European Community Commission which require wide mapping of aquifers, water quality, and vulnerability.
Review of Dispersivities for Transport Modeling in Soils
Abstract The lower limit of this chapter is within the Langhian (as explained in Chapter 12) corresponding to the base of the Hodde Formation and corresponding levels in onshore areas, except that, in the Netherlands and adjacent areas, the lowest Breda Formation, predating this level, is included. In the northern North Sea, this interval corresponds to the lower part of the Nordland Group, but owing to discrepancies in the de?nition of the base of the Nordland Group elsewhere, summarized below, the highest part of the Lark Formation is also included. The base of the Calabrian has been chosen as the upper limit. Although this is within the Early Pleistocene, it corresponds approximately to a well-marked seismic reflector throughout much of the North Sea, and to a foraminiferid zonal boundary that is documented throughout the Basin. In addition, the earliest Pleistocene (Gelasian) was for a long period classi?ed as Late Pliocene, and has often generally been included in Tertiary rather than Quaternary studies in offshore areas.