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Updated Radioisotope Studies in Zimbabwean Ground Waters
Author(s) -
Wurzel Peter
Publication year - 1983
Publication title -
groundwater
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.84
H-Index - 94
eISSN - 1745-6584
pISSN - 0017-467X
DOI - 10.1111/j.1745-6584.1983.tb00767.x
Subject(s) - alluvium , groundwater , geology , throughflow , borehole , alluvial plain , hydrology (agriculture) , dilution , floodplain , environmental science , geochemistry , soil science , geomorphology , geotechnical engineering , geography , paleontology , physics , cartography , thermodynamics
The Sabi Valley alluvial plain is the largest tract of alluvium in Zimbabwe. The ground‐water hydrology of the alluvial plain was studied by three independent methods: the classical approach of potentiometric surface construction and pump test analyses, the use of in‐borehole velocity and direction measurements with artificial radioactive isotopes applied to the point‐dilution techniques, and a natural and thermonuclear tritium survey. The three methods of approach produce remarkably close values for the ground‐water throughflow within the plain. A safe yield figure of 2.5 cubic metres/sec is currently used with confidence for the ground‐water reservoir as a result of this study.