水利水电科技进展2017，Vol.37Issue(2)：1-6,6.DOI:10.3880/j.issn.1006-7647.2017.02.001
单元嵌套网格产汇流理论
Theory of runoff yield and confluence by grid inlaid in watershed basic unit
摘要
Abstract
A method for dividing watershed by grid inlaid in watershed basic unit is discussed. As big data can precisely describe space distribution of rainfall and spatial variability of underlying surface, a calculation method based on big data, considering effects of space distribution of rainfall and spatial variability of underlying surface on runoff yield and confluence, is proposed. Through an introduction of "grid drop", the physical nature of watershed instantaneous unit hydrograph is revealed, and the theory of geomorphologic instantaneous unit hydrograph by Rodriguez-Iturbe and Valdes is supplemented. In addition, the limitations of the isochronism line method and the unit hydrograph method are investigated. It can be concluded that the proposed theory of runoff yield and confluence by grid inlaid overcomes the disadvantage and assimilates the advantages of the two methods mentioned above, and provides a possibility of unifying the two methods.关键词
流域基本单元/网格水滴/流域产汇流/大数据/流域地貌瞬时单位线/等流时线Key words
watershed basic unit/grid drop/runoff yield and confluence/big data/geomorphologic instantaneous unit hydrograph of watershed/isochronism line分类
天文与地球科学引用本文复制引用
芮孝芳..单元嵌套网格产汇流理论[J].水利水电科技进展,2017,37(2):1-6,6.基金项目
国家自然科学重点基金(41130369,41430855) （41130369,41430855）
