2012 Fiscal Year Final Research Report
The shallow groundwater exploration by Groundwater Aeration Sound in semi-arid grassland
| Project/Area Number |
22700854
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Geography
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| Research Institution | Niigata University (2011-2012)
Tottori University (2010) |
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Principal Investigator |
KAWAI Takayuki 新潟大学, 災害・復興科学研究所, 特任助教 (20437536)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 地下流水音 / 自由地下水 / 半乾燥草原地帯 / 水資源探査 |
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| Research Abstract |
This study provides a new method of groundwater exploration using groundwater aeration sound. The groundwater aeration sound (GAS) is that a kind of elastic wave generated around the vicinity of the saturated / unsaturated boundary. We conducted a survey using the existing wells in the dry grasslands of Mongolia. As the results, there was the logarithmic relationship between the GAS level and groundwater level. In addition, there was a difference in GAS distribution depending on geological conditions. With this relational equation, we investigated the GAS survey to estimate continuous groundwater level on a slope. As a result, we got a valid result on hydrogeology. Moreover, at the point where the groundwater level was shallow, there was much water-loving vegetation.
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