By Laurence Chery, Ghislain de Marsily
By means of 2050, the call for for water to maintain international agriculture increases by seventy-five in keeping with cent in order to feed an envisioned 9 billion population. elevated quantities of water may be required for irrigation and for commercial and family use. traditional ecosystems could be threatened by means of the growth of agricultural land and through a discount in water availability, whereas weather swap will exacerbate the location. administration of accessible assets, really groundwater, turns into extra severe and aquifers might want to be controlled for the advantage of all. those chosen papers have been first provided on the foreign organization of Hydrogeologists, Dijon 2006, and are divided into six topics: huge aquifers, source evaluation; huge aquifers, water salinity and evolution; karstic and carbonate aquifer structures; geothermal aquifer structures; aquifer illness reports and aquifer tracking platforms and administration. the quantity additionally features a brief biography of Henry Darcy and illustrates his contribution to technology. 5 invited contributions describe sleek equipment for estimating the hydraulic conductivity of aquifers.
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Extra info for Aquifer Systems Management: Selected Papers on Hydrogeology 10 (Selected Papers on Hydrogeology)
Since Fanning worked in terms of radius instead of diameter in his friction analyses, the Fanning f values are 1⁄4 of the Darcy f values. Darcy’s contribution to understanding of pipe flow friction losses and the improved Prony pipe friction coefficients is acknowledged in the joint naming of the Darcy-Weisbach equation. In his 1857 report, Darcy also made the first accurate measurements of turbulent pipe velocity distributions and provided the very first evidence of the existence of the fluid boundary layer (Darcy, 1857) which were made possible using his improved Pitot tube designs.
There are many other fascinating pieces of scientific, social, and historical information throughout the monograph and the illustrative plates are amazing pieces of engineering artwork. The original Darcy monograph was some 680 pages long and contained 28 plates of figures in a separate atlas. While much of the material in it addresses the Dijon water supply, Darcy also discussed several other topics including groundwater, sand filters and pipe manufacture. Darcy’s monograph shows how he approached the design and construction of the Dijon water supply system by choosing the water source, building an aqueduct and designing the water distribution system.
In Darcy’s time, hydrogeology was still arguing about the Greek water cycle which moved water from the sea to the continents and Father Paramelle’s famous book “The art of discovering springs” (1856, 1859) was the best seller, not Darcy’s (de Marsily, 2003). Unlike Darcy’s engineering views, Paramelle’s work is a much more descriptive and “naturalistic” contribution that is quite different to that of Darcy (1856). Darcy’s discussions of Father Paramelle’s exploration for springs and the ancient Greek hydrologic cycle are well written and perceptive.
Aquifer Systems Management: Selected Papers on Hydrogeology 10 (Selected Papers on Hydrogeology) by Laurence Chery, Ghislain de Marsily