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Studies on Groundwater Flow System of Mt.Fuji.

富士山地下水流系统研究。

基本信息

批准号：
04302064
负责人：
TAKAYAMA Shigemi
金额：
$ 6.46万
依托单位：
University of Tsukuba
依托单位国家：
日本
项目类别：
Grant-in-Aid for Co-operative Research (A)
财政年份：
1992
资助国家：
日本
起止时间：
1992 至 1994
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-04302064/
关键词：
Mt.Fuji Groundwater flow Spring Tritium Stable Isotope

项目摘要

As 1994 fiscal year is the final round of this project study, all investigators endeavored to finish their study. For that purpose, they completed the analysis of obtained water samples and contemplated on the results of investigations. Each investigator made a report of what they have done for the last three years and a preliminary report will be published in near future.The results of surveys conducted are summarized as follws ;1) The distribution of springs in and around the Mt.Fuji is shown in a map and from the map these springs are found to be distributed in restricted area.2) The mechanism of formation of water temperature of springs is elucidated and the effect of the heat from the interior of the earth is considered to be negligibly small.3) The studied area is divided into three regions from the results of analysis of water quality. The groundwater which is rich in NO is considered to be under the effect of artificial contamination due to human activity and the other two groups of groundwater are derived from the chemical components of the mother rocks of Mt.Fuji.4) Based on the study of composition of stable isotope, the altitude of groundwater recharge is estimated and the dominant source of groundwater recharge is derived from the rainfall on the mountain slopes of altitudes at 1000m and 2000m or 2400m.5) The highest concentration of tritium in the grounwater is 13TU and this fact proves that these are some old residual water which is recharged earlier times.The average concentration of tritium of spring water is less than 10TU.For further details, refer to the report papers which will be published at the end of the March, 1995.

由于1994财政年度是本项目研究的最后一轮，所有研究人员必须完成他们的研究。为此，他们完成了对所获得的水样的分析，并对调查结果进行了考虑。每名调查员均就过去三年的工作作出报告，初步报告将于近期发表。1）富士山及其周边地区的泉水分布如地图所示，从地图上可以看出这些泉水分布在有限的区域内。2）阐明了温泉水温的形成机制，认为来自地球内部的热量的影响很小。3）根据水质分析结果，将研究区划分为三个区。富含NO的地下水被认为是受到人类活动人为污染的影响，另外两组地下水则来源于富士山母岩的化学成分。4）在稳定同位素组成研究的基础上，估算了地下水补给的海拔高度，并指出地下水补给的主要来源是（5）泉水中氚的最高浓度为13TU，说明这是一种补给较早的老残水，泉水中氚的平均浓度小于10TU，详见1995年3月底发表的报告。