The Water Cycle
The lithosphere, oceans and the atmosphere form the largest reservoirs on earth. The main link between these reservoirs is the hydrological cycle, which provides fresh-water for humans, continental ecosystem functions, weathering, and sediment transport and is co-responsible for the temperature equilibration on earth. The driving force of the water cycle is solar radiation, contributing with an average of 1024 J/year to water evaporation; for comparison, the European Community consumes about 7×1019 J/year of energy.
KeywordsHydraulic Conductivity Groundwater Recharge Unsaturated Zone Water Cycle Vadose Zone
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