G-GRID: PROPOSED DEPLOYMENT OF MULTIDIMENSIONAL INFORMATION INFRASTRUCTURE FOR GROUNDWATER MAPPING IN THE UPPER US MIDWEST
A recently completed model for the Winnipeg region of Canada, however, demonstrated methods for creating a regional 3D geologic map through interpretation of large databases. This approach is now being coordinated with paleoclimatic research, regional characterization of subsurface material property heterogeneity using tools such as borehole geophysics, and geostatistical methods for quantitatively modeling heterogeneity of subsurface strata on a regional basis - in part through transfer of methods from the hydrocarbon industry. Large portions of these databases based on or containing hundreds of thousands of well records can already be viewed and interpreted visually with emerging visualization systems such as the GeoWall. But when appropriate interpolation and extrapolation methods are applied at the regional scale to the prediction of subsurface properties on a regular grid - a basic requirement for analysis - a multi-dimensional digital model beyond the capability of conventional computing resources can readily be generated. Our current efforts therefore are emphasizing methods for making both large groundwater databases and resultant models more available to users in a networked environment.