2017 Fiscal Year Final Research Report
Investigation of groundwater quality and hydrology in non-volcanic mountains for the water resource development.
| Project/Area Number |
15K16113
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | University of Yamanashi |
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Principal Investigator |
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| Research Collaborator |
SHRESTHA Suresh Das トリブワン大学, 理学部・地質学科, 教授
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | 国際研究交流 / ネパール、カトマンズ盆地 / 安定同位体比 / 山体地下水 / 湧水 |
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| Outline of Final Research Achievements |
This study aimed to identify the groundwater quality and hydrological characteristics in non-volcanic mountains, using stable isotope and groundwater dating tracers. The study area selected was the Kathmandu valley in Nepal, which is surrounded by non-volcanic mountains. The positive relationship between the residence time and discharge volume in these springs were observed. These results suggested that the water budget of mountain groundwater is much affected by spring water volume and stability of annual discharges.
For the water quality in spring waters, the results suggested mountain springs have relatively less contamination by anthropogenic nitrogen compared with the groundwater in the city area. However, we detected site specific contamination by E-coli to the spring water, presumably loaded from small villages in the mountain area. This shows that the water quality surveys along with mountain groundwater are still necessary for water resource development.
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| Free Research Field |
水質学
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