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Geophysical surveys for ground water evaluation, Royal Coast Development, Corporation Golf Course, Island of Hawaii
|dc.description.abstract||"The primary objective of the geophysical survey was to determine the elevation and thickness of the lens of fresh water floating on salt water. The generalized objectives for utilizing geophysical surveys for ground water evaluations on volcanic islands are illustrated in Figure 1-1. The volcanic rocks are generally highly permeable and this allows rainwater to percolate with little impedance directly downward through the island mass. Fresh water in these settings is found in two environments: 1. Dike-confined waters -- Typically, above the rift zone, intrusive dikes originating from a magma source below can form ground water dams, and behind these natural dams significant quantities of ground water can be stored. 2. Basal fresh water -- The high permeability of the volcanic rocks allows sea water to enter freely under the island, and a delicate balance is reached where a lens of fresh water floats on sea water."|
|dc.description.sponsorship||Tom Nance Water Resources Engineering|
|dc.publisher||Blackhawk Geosciences, Inc.|
|dc.publisher||Tom Nance Water Resource Engineering|
|dc.title||Geophysical surveys for ground water evaluation, Royal Coast Development, Corporation Golf Course, Island of Hawaii|
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Tom Nance Water Resource Engineering
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