A Study on the Characteristics of Water Balance of Japanese Lakes and their Classification

日本湖泊水平衡特征及其分类研究

• 批准号: 06680160
• 负责人: MORI Kazuki
• 金额: $ 0.7万
• 依托单位: Mie University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06680160/
• 关键词: Lake; Seepage Lake; Open Lake; Water Balance; Groundwater Seepage; Morphometry of Lake Basin; 閉塞湖; 降水量; 蒸発散量

The purpose of the study is to clarify the characteristics of water balance of Japanese lakes and to propose their classification according to the difference of the sorce of recharge and discharge. In the present paper, Japanese lakes have been classified based on the existence of inflowing and outflowing rivers. Some typical examples of water balance of the lake in which groundwater contribution is considrably large were also quantitatively examined. The results obtained are summarized as follows :1.333 Japanese lakes are classified into three categories, namely seepage lake, open lake and brackish lake. The ratio of seepage lake to all lakes is 38.7% in number and 24.0% in volume of lake basin.2.The number and the total volume of lake basin for each water balance category include 129 seepage lakes (10.88 km^3) , 177 open lakess (31.86 km^3) and 27 brackish lakes (2.55 km^3).3.Under the humid hydrometerological conditions like Japan, the water balance of seepage lake is characterized by the groundwater seepage from lake basin.4.The calculation of water balance for drainage area of each lake and the comparison with lakes under the tropical and arid climate are left for future studies.

研究的目的是阐明日本湖泊的水平衡特征，并根据补给和排放来源的不同提出日本湖泊的分类。本文根据流入和流出河流的存在，对日本湖泊进行了分类。并对地下水贡献率较大的几个典型湖泊水量平衡进行了定量研究。研究结果总结如下：将日本的1.333个湖泊划分为渗水湖、开阔湖和咸水湖三类。各水量平衡类型的湖盆数量和总面积分别为129个(10.88 km2)、177个(31.86 km2)和27个(2.55 km2)。3.在日本等湿润的水文气象条件下，渗水湖的水量平衡以湖盆地下水渗漏为特征。4.各湖的流域水量平衡计算及与热带、干旱气候下湖泊的比较有待进一步研究。