A SPATIAL AND TEMPORAL CONTINUOUS SURFACE-SUBSURFACE HYDROLOGIC MODEL

A hydrologic model integrating surface-subsurface processes was develo ped based on spatial and temporal continuity theory, The raster-based mass balance hydrologic model consists of several submodels which dete rmine spatial and temporal patterns in precipitation, surface flow, in filtration, subsurface flow, and the linkages between these submodels. Model parameters and variables are derived directly or indirectly fro m satellite remote sensing data, topographic maps, soil maps, literatu re, and weather station data and are stored in a Geographic Informatio n System (GIS) database used for visualization, Surface resolution of cells in the model is 20 m by 20 m (pixel resolution of the Systeme Pr obatoire d'Observation de la Terre (SPOT) satellite image) over a 2511 km(2) study area around the Crazy Mountains, Alaska, a watershed on t he Arctic Circle draining into the Yukon River, The outputs from this model illustrate the interaction of physical and biologic factors on t he partitioning of hydrologic components in a complex landscape.