干旱地区农业研究Issue(4)：245-248,4.
基于 Copula 函数的关中河流水文丰枯遭遇特征分析
Analysis on coincidence characteristics of high and low streamflow in Central Shaanxi based on Copula function
摘要
Abstract
Taking the mainstreams of Weihe River ,Jinghe River and Heihe River in Central Shaanxi as examples , the coincidence relationship of high and low streamflow among different rivers was analyzed with Copula function .The re-sults showed that the synchronous frequency of normal flow year was the highest ,that of low flow year was the next ,and that of high flow year was the lowest .As far as the asynchronous frequency of flow was concerned ,the frequency of high-normal and normal-high flow ,high-low and low-high flow ,and normal-low and low-normal flow of two rivers was coin-cident approximately .The synchronous frequency (of 3 types) was higher than the asynchronous frequency (of 6 types) for the three rivers .The Copula function method is not only simple and convenient but also clear and applicable for ana-lyzing the coincidence relationship of streamflow among rivers .关键词
水资源/河川径流/丰枯遭遇/Copula函数Key words
water resource/river runoff/high and low streamflow/Copula function分类
农业科技引用本文复制引用
刘招,田智,乔长录,贾志峰..基于 Copula 函数的关中河流水文丰枯遭遇特征分析[J].干旱地区农业研究,2013,(4):245-248,4.基金项目
陕西省自然科学基础研究计划项目（2010JM5013）；国家自然科学基金项目（51009008）；高等学校学科创新引智计划项目 （）
