摘要
根据流量值与流域空间特征值之间的相关关系来构建区域化流量历时曲线,以流量历时曲线取代常规的流量过程作为流域降雨径流模型参数优化的目标函数,分析该方法的可行性与模拟精度。由东江流域中的11个子流域所组成的研究区域能得到精度良好的区域化流量历时曲线,以TOPMODEL模型作为流域降雨径流模型,用区域化流量历时曲线作为优化目标函数,验证流域星丰和岳城的计算结果表明该方法是可行的,能得到较为满意的模拟精度,可以将该方法应用于广大的无资料地区推求日径流过程。
Regional flow duration curves are generated by using the relation of discharge and watershed characteristics. In traditional procedures of rainfall runoff model calibration, an observed stream flow hydrograph is ordinarily adapted as the objective function for model calibration. The feasibility and simulation precision of the method are deeply analyzed. The regional flow duration curves are developed by the study region made of the 11 catchments, and the calculation results are satisfactory. The flow duration curves are utilized as a new objective function for TOPMODEL model parameter calibration. The calculation results of Xingfeng and Yuecheng catchment show that the method is feasible, and it may obtain the satisfying simulation precision. The method may be applied in daily flow hydrograph simulation for other ungauged region.
出处
《水力发电学报》
EI
CSCD
北大核心
2007年第4期29-35,共7页
Journal of Hydroelectric Engineering
基金
武汉大学水资源与水电工程科学国家重点实验室开放基金资助项目(2005B019)
教育部新世纪优秀人才支持计划资助项目(NCET-05-0483)
国家自然科学基金资助项目(50309002)
南京师范大学虚拟地理环境教育部重点实验室开放基金资助项目(JK20050305)
