| 同位素信息确定Philip入渗模型稳定入渗率 |
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| 引用本文： | 王涛,包为民.同位素信息确定Philip入渗模型稳定入渗率[J].水科学进展,2011,22(4):479-483. |
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| 作者姓名： | 王涛 包为民 |
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| 作者单位： | 1.中国水电顾问集团成都勘测设计研究院 四川成都 610072; |
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| 基金项目： | 国家自然科学基金资助项目(50679024;40901015)~~ |
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| 摘 要： | 通过流域水循环中各要素同位素含量的测定,扩大建模信息利用量,增加确定模型参数所需信息,提高参数可识别性,可在一定程度上减少参数的不确定性.以仅有两个参数且物理意义明确的Philip入渗模型为例,利用同位素信息确定Philip入渗模型参数稳定入渗率,并通过室内降雨入渗实验来检验同位素信息确定模型参数结果.结果表明,利用同位素信息确定的Philip入渗模型稳定入渗率与实测值接近.氢氧稳定同位素的分析精度对利用同位素信息确定模型参数结果有一定影响.
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| 关 键 词： | 同位素信息 Philip入渗模型 参数确定 |
| 收稿时间： | 2010-09-08 |
Estimating the steady-state infiltration rate in Philip's equation using isotopic information |
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| WANG Tao,BAO Wei-min.Estimating the steady-state infiltration rate in Philip's equation using isotopic information[J].Advances in Water Science,2011,22(4):479-483. |
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| Authors: | WANG Tao BAO Wei-min |
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| Institution: | 1.HydroChina Chengdu Engineering Corporation, Chengdu 610072, China;2.State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China |
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| Abstract: | Uncertainties associate with parameter estimation in modeling the water cycle can be reduced to a certain extent by expanding the utilization of modeling information and increasing the amount of data for parameter estimation.This is done through collecting and using the isotopic composition of water within the water cycle in model identifieation.In this study,the isotopic information is used to estimate the steady-state infiltration rate in Philip's two-parameter equation and the estimated parameters are validated through the indoor experimental data.The result shows that the estimated steady-state infiltration rate is in food agreement with the measurement.Analytical previsions of hydrogen and oxygen stable isotopes will have some impact on parameter estimation using isotopic information. |
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| Keywords: | isotopic information Philip infiltration model parameter estimation |
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