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HYPOTHESE DUPUIT [1 record]

Record 1 2010-03-12

English

Subject field(s)
  • Hydrology and Hydrography
  • Geology
CONT

The Dupuit assumption holds that groundwater moves horizontally in an unconfined aquifer, and that the groundwater discharge is proportional to the saturated aquifer thickness. It was first designed by Jules Dupuit in 1863 to simplify the groundwater flow equation for analytical solutions. The Dupuit assumption requires that the water table is relatively flat, and that the groundwater is hydrostatic ...

Key term(s)
  • Dupuit's assumption

French

Domaine(s)
  • Hydrologie et hydrographie
  • Géologie
CONT

Les structures géologiques confèrent la plupart du temps aux systèmes aquifères des conditions qui privilégient l'extension horizontale devant l'extension verticale. Ceci a pour conséquence que, à l'échelle régionale, la composante verticale de l'écoulement peut être le plus souvent négligée au profit des composantes horizontales ou subhorizontales. Cette approximation, connue des hydrogéologues sous le nom d'hypothèse de Dupuit, est justifiée par l'absence de variations significatives de la charge (ou cote piézométrique) le long de la verticale au sein d'un aquifère, ce qui permet de ramener à deux le nombre des variables d'espace dont dépend la fonction h.

Spanish

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