Abstract
Bay environment is closely related to its stratified intensity. In this study, with the stratified intensity expressed by potential energy in water column, investigations have been carried out for the relationships between the stratified intensity and the stratification of water temperature and salinity as well as the dissolved oxygen of bottom in Uranouchi Bay. These results are described as follows.
(1) Things to weaken the stratified intensity in the bay are considered to be its internal wave other than its tidal stream and convection.
(2) It is possible for the stratification in Uranouchi Bay to control it by utilizing its tidal energy effectively.
(3) The salinity stratification is dominant in the stratified intensity of the bay comparing to the water temperature stratification.
(4) Water temperature stratification and salinity stratification can be evaluated by a density stratified intensity attributing to its water temperature and salinity respectively.
(5) The stratified intensity is a very effective index as far as the increase and decrease mechanism of dissolved oxygen (DO) of bottom is considered.
