CAJ | 학술논문

利用1961-2013年逐日降水资料及NCEP/NCAR再分析资料，分析2013年黑龙江省境内三江流域及支流发生大洪水的原因，并对盛夏降水异常成因进行了分析。结果表明：2013年黑龙江省境内三江流域及其支流发生大洪水的原因为前期降水偏多，使土壤湿度大，流域内蓄水较大；同时，夏季降水偏多，降水时段集中，暴雨频次多于常年；多座大中型承担防洪任务的水库超汛限水位运行，为保护水库堤坝的安全，泄洪量加大。黑龙江省盛夏降水偏多的主要原因为东北冷涡活动频繁且路径偏北；850 hPa水汽输送充足；200 hPa东亚高空西风急流位置异常，东亚夏季风偏强；500 hPa欧亚纬向环流弱，西太平洋副热带高压阶段性异常偏北，鄂霍次克海地区阻塞高压明显，黑龙江地区上空盛夏为负距平控制。
이용1961-2013년축일강수자료급NCEP/NCAR재분석자료，분석2013년흑룡강성경내삼강류역급지류발생대홍수적원인，병대성하강수이상성인진행료분석。결과표명：2013년흑룡강성경내삼강류역급기지류발생대홍수적원인위전기강수편다，사토양습도대，류역내축수교대；동시，하계강수편다，강수시단집중，폭우빈차다우상년；다좌대중형승담방홍임무적수고초신한수위운행，위보호수고제패적안전，설홍량가대。흑룡강성성하강수편다적주요원인위동북랭와활동빈번차로경편북；850 hPa수기수송충족；200 hPa동아고공서풍급류위치이상，동아하계풍편강；500 hPa구아위향배류약，서태평양부열대고압계단성이상편북，악곽차극해지구조새고압명현，흑룡강지구상공성하위부거평공제。
Based on the daily precipitation and NCEP/NCAR reanalysis data from 1961 to 2013,the forming rea-sons of flood and summer precipitation anomaly were analyzed in the three rivers valley and their tributaries of Heilongjiang province in 20 1 3 .The results show that the overmuch former precipitation is the main reason of flood and leads to high soil humidity and overfull water storage in the valley in 2013.At the same time,the rainstorm frequency is higher in 2013 than in the other years because of abundant and concentrative summer rainfall.The wa-ter storage capacity in many large and medium sizes reservoirs undertaking the flood control task exceeds the nor-mal standard,so flood discharge increases in order to protect the safety of reservoir dam.The main reasons causing the more summer precipitation in Heilongjiang province are that the northeast cold vortex is active and its path is north-moving;water vapor transport is sufficient at 850 hPa;the location of the East Asian westerly jet is abnormal at 200 hPa and the East Asian summer monsoon is strong.At 500 hPa,the Eurasian zonal circulation is weak;the west Pacific subtropical high is abnormally north-moving in some stages;the Okhotsk blocking high is obvious;it is controlled by the height field in midsummer over the Heilongjiang region.