| Project/Area Number |
25660195
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Rural environmental engineering/Planning
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| Research Institution | National Agriculture and Food Research Organization |
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Principal Investigator |
YOSHINAGA ikuo 独立行政法人農業・食品産業技術総合研究機構, 農村工学研究所・水利工学研究領域, 主任研究員 (50414420)
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
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| Keywords | 研究質定量化・予測 / 農業水利・灌漑排水 / 放射性セシウム / ガンマ線 / GNSS / リアルタイム / 底質 / ため池 / 底泥 |
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| Outline of Final Research Achievements |
We developed a simple field survey system for gamma ray emitted from radioactive cesium accumulated in reservoir bottom sediment. The system is composed of a CsI analyzer in waterproof acryl box, a global navigation satellite system (GNSS) receiver, and a trace drawing software. The software can draw spatial distribution of gamma ray by checking csv files saved by the CsI analyzer and tracing log file saved by the GNSS receiver in real time. The system enable to understand spatial distribution and hot spots of gamma ray in bottom sediments. The concentration of radioactive cesium can be calculated from the gamma ray values by a correlation curve obtained in same water bodies.
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