Analysis of Geohydrologic Data by Kriging,
BATTELLE PACIFIC NORTHWEST LAB RICHLAND WA
Pagination or Media Count:
Hydrologic characterization of hazardous waste sites is an expensive and challenging task. Making efficient use of field data in modeling subsurface flow and transport can help private firms and government agencies control costs by achieving better results. Often, conventional approaches to geohydrologic data processing e.g., hand contoured maps are too subjective to provide the most efficient and accurate use of the data. The geostatistical interpolation technique, kriging, and an elementary streamtube hydraulic conductivity inverse algorithm have been successfully applied to characterize the flow system at a complex hazardous waste site. Kriging aided in identifying the need for additional field measurements, selecting optimal well locations, determining the effect of subjective inferences by geohydrologists on the groundwater flow system, establishing data validity, and producing best-fit contour plots from irregularly spaced field measurements. Subsequent field work and the numerical modeling of flow and chemical transport confirmed the value of the geostatistical efforts.