辽宁师范大学学报（自然科学版）
遼寧師範大學學報（自然科學版）
료녕사범대학학보（자연과학판）
Journal of Liaoning Normal University (Natural Science Edition)
2015年
3期
408-414
,共7页
Copula函数%暴雨要素%重现期%辽宁省
Copula函數%暴雨要素%重現期%遼寧省
Copula함수%폭우요소%중현기%요녕성
Copula function%rainstorm factors%return period%Liaoning Province
选取纬度相近的宽甸、建平和营口站1955—2012年降水数据，引入Copula函数，对辽宁省不同气候类型区暴雨要素进行联合特征分析。结果表明：（1）暴雨单要素拟合中，广义极值分布比较通用，暴雨比和暴雨强度适合同时用于反映暴雨特征，暴雨日数只适用于反映半湿润山区的暴雨特征，暴雨量适用于反映半湿润平原区和半干旱区的暴雨特征；（2）不同地貌、不同气候区，联合暴雨多个要素的Copula函数的类型不尽相同， Clayton Copula函数适合用于联合反映半湿润山地区和半干旱区的暴雨，Frank Copula函数适合用于反映半湿润平原区的暴雨联合特征；（3）辽宁省暴雨的联合重现周期从东部半湿润的山区向西部半干旱区逐渐延长，而同现重现周期则从西部干旱区向东部半湿润山区延长，即二者表现出相反的趋势。
選取緯度相近的寬甸、建平和營口站1955—2012年降水數據，引入Copula函數，對遼寧省不同氣候類型區暴雨要素進行聯閤特徵分析。結果錶明：（1）暴雨單要素擬閤中，廣義極值分佈比較通用，暴雨比和暴雨彊度適閤同時用于反映暴雨特徵，暴雨日數隻適用于反映半濕潤山區的暴雨特徵，暴雨量適用于反映半濕潤平原區和半榦旱區的暴雨特徵；（2）不同地貌、不同氣候區，聯閤暴雨多箇要素的Copula函數的類型不儘相同， Clayton Copula函數適閤用于聯閤反映半濕潤山地區和半榦旱區的暴雨，Frank Copula函數適閤用于反映半濕潤平原區的暴雨聯閤特徵；（3）遼寧省暴雨的聯閤重現週期從東部半濕潤的山區嚮西部半榦旱區逐漸延長，而同現重現週期則從西部榦旱區嚮東部半濕潤山區延長，即二者錶現齣相反的趨勢。
선취위도상근적관전、건평화영구참1955—2012년강수수거，인입Copula함수，대요녕성불동기후류형구폭우요소진행연합특정분석。결과표명：（1）폭우단요소의합중，엄의겁치분포비교통용，폭우비화폭우강도괄합동시용우반영폭우특정，폭우일수지괄용우반영반습윤산구적폭우특정，폭우량괄용우반영반습윤평원구화반간한구적폭우특정；（2）불동지모、불동기후구，연합폭우다개요소적Copula함수적류형불진상동， Clayton Copula함수괄합용우연합반영반습윤산지구화반간한구적폭우，Frank Copula함수괄합용우반영반습윤평원구적폭우연합특정；（3）요녕성폭우적연합중현주기종동부반습윤적산구향서부반간한구축점연장，이동현중현주기칙종서부간한구향동부반습윤산구연장，즉이자표현출상반적추세。
By selecting similar latitude meteorological data on Kuandian ,Jianping ,and Yingkou Sta‐tions from 1955 to 2012 ,we analyse the joint characteristic of rainstorm factors on different climate zones in Liaoning Province by introducing the copula function .The results show that :(1)In the fit‐ting of rainstorm single elements ,the generalized extreme value distribution is general ,rainstorm in‐tensity (I) and rainstorm contribution(R) suitable used to reflect the features rainstorm ,rainstorm days (D50 ) is applicable only in the semi‐humid mountain ,rainstorm amount(P50 ) is applicable to re‐flect the features rainstorm in semi‐humid plains area and semi‐arid zone;(2)The Copula function for joint of rainstorm factors is different in Liaoning Province that have different physiognomy and differ‐ent climate zones ,Clayton Copula function is suitable to use in reflecting the features of joint rain‐storm factors in semi‐humid mountain and semi‐arid areas ,Frank Copula function is suitable to use in reflecting the features of joint rainstorm factors in semi‐humid plains area ;(3 )Joint return period gradually extend form the eastern semi‐humid mountain to the western semi‐arid areas in Liaoning Province .Co‐occurrenc return period show the opposite trend .It extend gradually from the western semi‐arid areas to the eastern semi‐humid mountain in Liaoning Province .
