2-DIMENSIONAL DISPERSIVITY ESTIMATION USING TRACER EXPERIMENT DATA

This paper presents two analytical methods for estimating longitudinal and transversal dispersivities for a two-dimensional plume generated by a slug tracer injection in a uniform ground-water flow field. The first method requires the mapped plume area measurements at a given time after the tracer sources are injected. The second method requires concentration versus time data from one sampling well through which the plume passes. Detailed example calculations and comparisons with other procedures show that the methods presented herein represent improvements in both accuracy and ease of use over previous methods.