Development in Estuary Engineering

河口工程工作组（EEWG）举行会议，讨论以下主要议题：“明石大桥塔的海流观测”和“河口水动力学三维数值模型的竞争”。根据1997年至1999年的会议讨论，编写了“研究项目（科研补助金（B）（1））”报告。在1999年10月举行的海岸工程JSCE会议上介绍了研究结果，举办了有关河口工程的论坛等，使EEWG的活动得到了许多研究人员的了解。此外，我们还讨论了东京湾、大坂湾和伊势湾等河口的水环境和生态环境今后应如何起源。讨论的内容如下：1.氮、磷等营养盐在河口的物质输运过程2.基于“美国港务局”理念的海岸带环境管理的可能性。改善环境和生态的缓解技术4。河口浮游生物和底栖生物生态系统

Meetings of Estuary Engineering Working Group (EEWG) were held to discuss the following principal subjects; "Current observations from tower of the Akashi Bridge", and "Competition of three-dimensional numerical models for hydrodynamics in estuary". Report for "research project (grant-in-aid for scientific research (B) (1))" was written up based on the discussions of the meetings from 1997 to 1999. The presentation of findings in the conference of Coastal Engineering, JSCE held on October 1999, the implement of forums concerning Estuary Engineering, and so on were conducted so that the activities of EEWG have many researchers known. Further, we discussed how water environment and ecological environment in estuary such as Tokyo Bay, Osaka Bay, and Ise Bay ought to be originated in the future. The contents of the discussion are as follows :1. Mass transport process of nutrients in estuary such as nitrogen and phosphorous2. Possibility of coastal zone environmental management based on the idea of "Port Authority of USA"3. Mitigation technologies for environmental and ecological improvements4. Ecosystem of plankton and benthos in estuary