抄録
The neighboring three lakes on the north shore of Kamikoshiki Island, which are all cut off from the sea by a common gravel bar, have a wide chlorinity range from about 1 to 18 ‰. Lake Kaiike, in the middle of these lakes, presents many interesting phenomena due to the stratified condition of the deeper seawater layer covered by less saline water. Comparison with the adjacent two lakes (Namakoike, Kazakiike) suggests that the stratified condition of Lake Kaiike appears only during a limited period of its transition from a freely connected state with the sea to a poorly communicated state with the sea.
