2010 Fiscal Year Final Research Report
Study on Interval Estimation Method for Effluent Loads from a Catchment
| Project/Area Number |
20580263
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Irrigation, drainage and rural engineering/Rural planning
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| Research Institution | Kobe University |
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Principal Investigator |
TADA Akio Kobe University, 農学研究科, 准教授 (00263400)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 面源負荷量 / 区間推定 / ブートストラップ / サンプリング戦略 / USGS Load Estimator / バイアス修正 / SALT法 / Tobitモデル |
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| Research Abstract |
This study is aimed at seeking the adequate interval estimate method of effluent loading from diffuse source, such as forested or agricultural catchment. A configuration of confidence interval was based on the bootstrap method. As a results, the best performance was attained with the interval estimation method that combined periodical sampling with 7 parameters model of USGS Load Estimator applying bias correction by composite method for dissolved ions. In contrast, the best performance was achieved with the interval estimation method that combined probabilistic SALT sampling with power type loading-discharge rate regression model applying no bias correction for suspended solids. However the interval estimation method for dissolved ions still has rooms for improvement.
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