SUBSURFACE RUNOFF CHARACTERISTICS FROM A FOREST HILLSLOPE SOIL PROFILE INCLUDING MACROPORES, HITACHI OHTA, JAPAN

Description of an experimental watershed with instrumentation details. Vertical distribution of penetrometric index is discussed along longitudinal axis of the slope. Analysis of rainfalls , the subsurface flow and the matric potential responses to storms. Interpretation of discharge components of flow, outflow and flux for each portion of soil. Schematic of the hydrological response depends of preferential flow systems during dry and wet conditions.