滋賀県大谷川源頭部斜面にみられる微起伏の成因に関する研究第1報

Abstract

Cone penetration test with light-weight apparatus, observation of soil moisture potential with non-recording tensiometers and monitoring of displacement in the topsoil horizons with an exten-someter were carried out in a small experimental basin at the headwaters of the Otani River Basin, Shiga Prefecture. Although the current results are not very conclusive, it is suggested that the characteristic microtopographical features accompanying a small depression and neighbouring crest are suggested to have evolved by the effect of infiltration and seepage of rain water in the soil horizons.