Littoral Environment Observation Programby Andre Szuwalski, Shafer Kline & Warren, Overland, Park, KS, USA,
Ann Sherlock, Shafer Kline & Warren, Overland, Park, KS, USA,
Abstract: This paper presents a method for determining the longitudinal, transverse, and vertical dispersivities of a thick aquifer for a free convection tracer test using only measurements from three sampling points. A slug of tracer is injected instantaneously into an aquifer at a well upstream from the sampling wells and is transported downstream by the natural groundwater flow in the form of a three-dimensional plume. Concentration measurements made continously in the sampling wells as the plume passes are used to determine the dispersivities, as well as the direction of flow. The method described was carried out on a Hewlett-Packard 110 Microcomputer.
Subject Headings: Flow measurement | Aquifers | Probe instruments | Pumping tests | Wells (water) | Rivers and streams | Groundwater flow | Three-dimensional flow
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