抄録
Seawater tends to stratify because the sea surface is high temperature and the bottom is low temperature. Upper seawater with large amount of planktons and lower seawater of large amount of nutrient salts are mixed around this density stratified boundary by discharging the mixed water horizontally. So similar to the water flowed on a flat plate in the air, the flowing mixed water will follow the interfacial boundary. The flow entraining makes it possible to agitate large areas. This experimental investigation has been observed the behavior by changing saline density in a two-dimensional tank as the basic experiment of previous phenomenon, making the density stratified layers and jetting colored water from a nozzle. The sprayed water jet diffuses horizontally in the stratified layers according to that density. We have observed interesting behavior when water is sprayed in the different density layers. At first it diffuses up and down to reach the layer of same density as itself, then diffuses horizontally.
