1999 | OriginalPaper | Buchkapitel
Introduction
verfasst von : J. Bear, A. H.-D. Cheng
Erschienen in: Seawater Intrusion in Coastal Aquifers — Concepts, Methods and Practices
Verlag: Springer Netherlands
Enthalten in: Professional Book Archive
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Of all the water on earth, it is estimated that 99.4% (1.4 x 109 km3) is surface water. Groundwater occurs only as 0.6% (9 x 106 km3) of the total. However, of the vast amount of surface water, most of it is in the form of saltwater in oceans and inland seas (97%). Fresh surface water accounts for only 2% of the total volume of water.