Description of an indirect method (IDPR) to determine spatial distribution of infiltration and runoff and its hydrogeological applications to the French territory

摘要

It is commonly accepted in geospatial analysis that automated calculation of thalweg networks from a digital elevation model produces a theoretical flow system that overall represents the branching of in-place hydrographic networks. However, in detail this theoretical network is too different from the natural river network to substitute for the systematic digitization of rivers. Numerous papers seek to optimize numeric calculations to reduce this discrepancy but none has proposed to use this difference as data specific to the context under study.