摘要
文章在实验室模拟岩溶地下水系统泉流量衰减过程的基础上,针对建模过程中存在的有色噪声问题,提出利用Cochrane-Orcutt迭代法与自相关相容协方差识别和消减建模过程中有色噪声,确定裂隙-管道介质岩溶泉衰减流量具有三阶自相关特征,并成功建立裂隙-管道介质中岩溶泉流量的向量自回归(VAR)方程,提高了模型精度。
Based on the laboratory simulation of the spring flow attenuation in fissure-conduit media of a groundwater system, the Cochrane-Orcutt iteration method combined with the Heteroskedasticity and Autocorrelation Consistent Covariances was used to identify and decrease the colored noises during the linear model developing process. The analysis of the Heteroskedasticity and Autocorrelation Consistent Covariances shows that the discharge of a spring in the fissure-conduit media has the characteristics of three order lag correlation. A vector autoregressive model for spring flow of the fissure-conduit media has been established and the model results have a relatively high simulation precision.
出处
《水文地质工程地质》
CAS
CSCD
北大核心
2009年第3期29-32,38,共5页
Hydrogeology & Engineering Geology
基金
973计划“西南喀斯特山地石漠化与适应性生态系统调控”(2006CB403200)
教育部“长江学者和创新团队发展计划”“大气、陆面、水文过程耦合机理研究”(IRT0717)联合资助
