不同指标在水文干旱重现期分析中的应用  

Application of Different Indexes in Hydrological Drought Reproduction Period Analysis

作　　者：马勇骥 曾凡永[1] 李君 MA Yong-ji;ZENG Fan-yong;LI Jun(Nantong Branch of Jiangsu Province Hydrology and Water Resources Survey Bureau,Nantong Jiangsu 226006, China;Nantong Jiuwei Harbor Water Conservancy Project Management Institute,Nantong Jiangsu 226006, China)

机构地区：[1]江苏省水文水资源勘测局南通分局,江苏南通226006 [2]南通市九圩港水利工程管理所,江苏南通226006

出　　处：《科技视界》2017年第23期9-12,共4页Science & Technology Vision

摘　　要：本文介绍了三种水文干旱指标,阐述了水文干旱重现期计算的原理与方法,利用樟树水文站1970-2009年旬径流系列进行实例研究,其结果表明:(1)各指标对水文干旱的识别效果较为一致;(2)三个指标得出干旱历时进行拟合均可采用指数分布,干旱历时拟合函数的选择存在不同;(3)径流距平指标与SDI指数应用于基于Copula函数的干旱重现期计算效果相对较好,Z指数相对较差。In this paper,three kinds of hydrological and drought indices are introduced,and the principle and method of hydrological drought recurrence period are expounded.Using the runoff series of Camphor Hydrological Station from1970to2009for example,the results show that:(1)(2)The exponential distribution can be obtained by fitting the drought duration with the three indexes,and the choice of fitting function of drought duration varies;(3)The runoff anomaly index and SDI index are applied to the study based on Copula The function of the drought return period calculation effect is relatively good,Z index is relatively poor.

关 键 词：水文干旱 干旱指标 诊断分析 干旱频率 

分 类 号：P333.3[天文地球—水文科学]