Study on characteristics of the bottom cold water and its influences on ocean environment in coastal waters of Japan Sea

为揭示日本海近岸海域底部冷层形成的特征，进行了观测和资料分析。若狭湾的观测结果表明，在分层期间，冷水间歇性地侵入底层。通过对日本海近岸海域历史资料的分析，发现若浅湾底冷层是在多年的时间里由陆架斜坡区向其内部发展的，并揭示了底冷层对渔场水温和环境分层过程的影响。

In order to reveal characteristics of a bottom cold layer developing in coastal waters of Japan Sea, observations and data analyses were conducted. The result of the observations which conducted in Wakasa Bay showed that cold water intruded intermittently in the bottom layer during the stratification period. The results of the data analyses with historical data collecting in coastal waters of Japan Sea indicated that the bottom cold layer developed from the shelf slope region to the inner part of the Wakasa Bay in many years, and it revealed that the bottom cold layer affected the stratification process in water temperature and environment in fishing grounds.