CAJ | 학술논문

　　引入Copula函数方法，对关中地区几条主要河流径流的丰枯遭遇特性及规律进行研究，分别选取渭河、泾河和黑河径流系列作为代表，对其两两间的丰枯遭遇状况进行了分析。结果表明：在丰枯同步频率中，两条河流间同平的频率大于同枯的频率和同丰的频率，同丰的频率最小；在各河流的丰枯异步频率中，两河流的丰平与平丰、丰枯与枯丰、平枯与枯平遭遇的概率基本一致；各河流间的丰枯遭遇概率、丰枯同步（共3种类型）频率略大于丰枯异步（共6种类型）频率。研究表明，Copula函数方法概念明确，适用性强，简便易用。
　　인입Copula함수방법，대관중지구궤조주요하류경류적봉고조우특성급규률진행연구，분별선취위하、경하화흑하경류계렬작위대표，대기량량간적봉고조우상황진행료분석。결과표명：재봉고동보빈솔중，량조하류간동평적빈솔대우동고적빈솔화동봉적빈솔，동봉적빈솔최소；재각하류적봉고이보빈솔중，량하류적봉평여평봉、봉고여고봉、평고여고평조우적개솔기본일치；각하류간적봉고조우개솔、봉고동보（공3충류형）빈솔략대우봉고이보（공6충류형）빈솔。연구표명，Copula함수방법개념명학，괄용성강，간편역용。
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 .