2013 Fiscal Year Final Research Report
Development of new imaging method of hydraulic conductivity structure
| Project/Area Number |
23501241
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Geography
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| Research Institution | Kyoto University |
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Principal Investigator |
TADA-NORI Goto 京都大学, 工学(系)研究科(研究院), 准教授 (90303685)
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| Co-Investigator(Renkei-kenkyūsha) |
TSUJIMURA Maki 筑波大学, 生命環境科学研究科, 教授 (10273301)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 水文学 / 自然電位 / 透水構造 / インバージョン / 地下水位 / 比抵抗 / 流動電位 / 透水係数 |
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| Research Abstract |
Understanding of groundwater flow pattern is big issue in science, engineering and agriculture. We focus on the self potential (natural electrical potential) on the surface, which can be generated by groundwater flow. In this study, we developed the numerical forward codes for calculations of the groundwater flow and self-potential distributions. An inverse scheme of hydraulic structure by using the self-potential data is also constructed. The numerical feasibility studies strongly suggested the possibility to image the subsurface hydraulic heterogeneity. Then, we adopted our numerical technique for analyzing the real field data of self-potential. As a result, we succeed in getting a reasonable hydraulic structures from the self-potential data. Our new scheme for analysis of self-potential will be helpful for understanding the subsurface fluid flow.
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