小流域と大流域からの流出の相互関係

Abstract

Although many observational researches on the experimental basin have been carried out inthe world, including our research, it is not confirmed whether the research results in the basin canbe extrapolated to estimate the runoff hydrograph from a large river basin, or not. This paperdescribes the relation between runoff hydrographs from a small basin (Ara experimental basin) andfrom a large basin (Ara River basin) including the small one.It is obtained under several assumptions that1) For the direct runoff whose runoff field is the surface of mountain slope, the hydrographfrom a large river basin can be calculated directly using the hydrograph from a small basin includedin it.2) For the indirect runoff whose runoff field is the underground, the runoff from a small basincan not be extrapolated directly to the one from the large river basin.