Download Methods in Karst Hydrogeology by David Drew, Nico Goldscheider PDF

By David Drew, Nico Goldscheider

Filling a spot within the karst literature, this booklet describes tools fabulous to be used in karst terrains. those contain tools which are uncomplicated to all hydrogeological reports, akin to hydraulic investigations, hydrochemistry, geophysics, isotope chemistry and modelling, with the emphasis put on their software to karst structures. many of the chapters of this booklet are written by way of specialists in the entire various tools. lots of the chapters are multi-authored, and the authors comprise hydrogeologists who're skilled in comparing quite a few karst environments and who jointly, supply a balanced view of all of the karst equipment.

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The thickness of this zone ranges between decimetres and tens of metres. The main hydraulic functions of epikarst are water storage and concentration of flow (Fig. 5) (Klimchouk 1997, Mangin 1975). Karst features can also be subdivided into destructive or dissolutional landforms that predominantly result from carbonate dissolution, and depositional or constructive forms that form by carbonate precipitation. Another classification distinguishes negative (concave) and positive (convex) landforms.

7. Possible interpretation of flow responses; for explanation see text (from Perrin 2003). g. TDS, nitrates, stable isotopes, radon or TOC have highly contrasting behaviour in soil, epikarst or shafts). g. Fig. 8, Perrin 2003, Perrin et al. 2003b). However, as infiltration in karst is highly heterogeneous in space (from one water pathway to the other) and in time (depending on the flow conditions), it is not straightforward to extrapolate the results at catchment scale. The selection of water inlets depends on the aim of the investigation.

They are often vertical and normal to the bedding planes but can also be inclined and have a sinuous shape. 4. Hydrogeological function of normal faults in a limestone-marl sequence. Dependent on the displacement, closed faults may form a hydraulic barrier (a) or connect different aquifers (b). The presence and permeability of the filling material decides whether an open fault acts as a hydraulic barrier (c) or connects several aquifers (d). Similar schemes can be set up for other types of faults.

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