J54/B1-102 Vertical scale: 300

22-2/J54-2/1-4 Contour interval: 15

down to 400 metres 22/I55-8/1 Contour interval: 5

22-1/H50-4/3

22-1/E52-14/7 Vertical scale: 50

Legacy product - no abstract available

Legacy product - no abstract available

The groundwater modelling sub-committee set up by the Steering Committee in June 1980, met in October and recommended that a preliminary model of the Basin should be attempted; it should contain 3 layers, with a 10 x 10 grid (300 nodes) and have the aim of increasing theaccuracy of solutions at later stages by decreasing the grid size. The sub-committee proposed that a whole basin model be attempted by the South Australian Department of Mines & Energy using a finite element method, and by the Water Resources Commission of New South Wales using a finite difference approach; the methods could then be compared before a more elaborate model was tried.

Tarawa is a coral atoll in the Gilbert Islands; it consists of a number of low islands, several of which contain discrete freshwater lenses overlying salt water. Resistivity depth probes indicate that the largest untapped lens is on the northern island of Buariki, and that this lens is up to 29m thick. The total safe yield of the Tarawa freshwater lenses is probably more than 12 1/s,and there is scope for the present groundwater development system of infiltration galleries to be extended.

Legacy product - no abstract available