成層の発達した海峡の流動構造と内部波の発生機構

抄録

Field measurements of current and density fluctuations were conducted at the mouth of Mutsu Bay in the end of August, 1999 and 2000. In both years, the physical characteristics are almost similar, however the slopes of water level at the Tsugaru Strait connecting the Japan Sea to Pacific Ocean are much different. The detailed mechanisms are discussed on the basis of 3-D numerical simulation using ODEM after the model can simulate the primary feature of field observation results. Both field surveys and numerical simulation clarify that flow and density structures in Tsugaru Strait has a great influence on the occurrence and development of internal waves.