DISPRESION PATTERNS OF RIVER WATER IN LAKE BIWA

Abstract

An observation of river water dispersion was carried out in Lake BIWA a few times in 1972. We observed the temperature and electric conductivity as tracers of the river water. The dispersion patterns could be classified in the following three cases. Case 1 : The river water flows into the lake and disperses in the upper layer of the lake water. Case 2: The river water flows parallel to the coast with the longshore currents made by the wind and breaking of the incident waves. Case 3: The river water sinks at the river mouth and disperses along the lake bottom.