Water resources of rivers and estuaries have traditionally been managed for local societal demands, including municipal, agricultural, and industrial usages, as well as for transportation as navigational channels. However, as societal demands have changed including urban expansion, economic growth, cultural transition, etc., the land uses also should be changed, and the civil necessities of water have been diversified, and this has raised concerns about the ecology, environment, and water quality issues. This study attempted to address three water resource management issues in South Korean rivers and estuaries, which occurred recently due to the changes in societal demands for water and explained how the most advanced scientific research techniques had been applied. The main issues were 1) agricultural water security and ecological environment restoration in Nakdong River Estuary, 2) water and soil quality degradation due to industrial effluents in Hyeongsan River Estuary, and 3) utilization of rivers as waterways and water quality and ecology issues in the ARA waterway. To find solutions to conflicts of water resources, the series of numerical simulations validated by the field observations allowed 1) assessments of the impact and extent of salt intrusion upon the opening of estuary dam gates, 2) estuarine physical processes to investigate the influence of industrial effluent, and 3) analysis water quality variations resulting from changes in the function of artificial channels. These analyses are expected to provide appropriate and science-based strategies of regional water management.

中文翻译：

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响应社会需求变化的河口水资源高级流动模拟

河流和河口的水资源传统上是根据当地社会需求进行管理的，包括市政、农业和工业用途，以及航道运输。然而，随着城市扩张、经济增长、文化转型等社会需求的变化，土地用途也随之改变，民用水需求也随之多样化，引发了人们对生态、环境和水环境的关注。水质问题。本研究试图解决韩国河流和河口最近因社会用水需求变化而出现的三个水资源管理问题，并解释了如何应用最先进的科学研究技术。主要问题是1）洛东江口农业用水安全和生态环境恢复，2）庆山江口工业废水造成的水和土壤质量退化，3）河流作为水道的利用以及该地区的水质和生态问题ARA水道。为了找到水资源冲突的解决方案，通过现场观察验证的一系列数值模拟可以：1）评估盐分入侵对河口大坝闸门打开的影响和程度，2）河口物理过程以调查工业化的影响污水，3）分析人工渠道功能变化引起的水质变化。这些分析预计将为区域水资源管理提供适当且基于科学的战略。