By Laurence Chery, Ghislain de Marsily
Through 2050, the call for for water to maintain global agriculture increases by seventy-five in line with cent in order to feed an predicted 9 billion population. elevated quantities of water may be required for irrigation and for business and family use. usual ecosystems should be threatened via the growth of agricultural land and through a discount in water availability, whereas weather switch will exacerbate the placement. administration of obtainable assets, quite groundwater, turns into extra serious and aquifers might want to be controlled for the good thing about all. those chosen papers have been first offered on the overseas organization of Hydrogeologists, Dijon 2006, and are divided into six issues: huge aquifers, source evaluation; huge aquifers, water salinity and evolution; karstic and carbonate aquifer structures; geothermal aquifer structures; aquifer illness reviews and aquifer tracking platforms and administration. the amount additionally features a brief biography of Henry Darcy and illustrates his contribution to technology. 5 invited contributions describe smooth equipment for estimating the hydraulic conductivity of aquifers.
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Additional info for Aquifer Systems Management: Selected Papers on Hydrogeology 10 (Selected Papers on Hydrogeology)
Hubbert MK (1969) The Theory of Ground-Water Motion and Related Papers, Hafner, New York. Marsaines C (1858) Notice nécrologique sur M. Darcy, Inspecteur Général des Ponts et Chaussées, Ann. Ponts Chaussées, Ser. 3, 15, 90–109. Narasimhan TN (2005) Hydrogeology in North America: past and future. Hydrogeology Journal, 13:7–24. Philip JR (1995) Desperately seeking Darcy in Dijon. Soil Sci. Soc. Am. , 59, 319–324. Poiseuille JL (1841) Recherches expérimentales sur le mouvement des liquides dans les tubes de tréspetits diamétres, comptes rendus, Acad.
According to Brown (2002a) Darcy wrote, “Before seeking the law for pipes that relates the gradient to the velocity, we will make an observation: it appears that at very-low velocity, in pipes of small diameter that the velocity increases proportionally to the gradient”. He later showed explicitly that his newly proposed pipe friction formula would reduce to equation (4) at low flow and small diameters. Darcy noted that this was a “rather remarkable result, since we arrived, Mr. Poiseuille and I, with this expression, by means of experiments made under completely different circumstances”.
In the text, Darcy provides details about the slope and cross section of the aqueduct and details of all the work involved and all costs for material and labour. 28 Aquifer Systems Management: Darcy’s legacy in a world of impending water shortage Figure 1. Profile of the Aqueduct that conveys the Rosoir Spring water to Dijon, Plate 2. In Chapter 2, Darcy discusses the internal distribution system, which consists of two reservoirs and a system of cast iron pipes that branch out into all neighbourhoods of the city to provide water to street fountains and private concessions.
Aquifer Systems Management: Selected Papers on Hydrogeology 10 (Selected Papers on Hydrogeology) by Laurence Chery, Ghislain de Marsily