气象与环境学报Issue(3)：31-37,7.DOI:10.3969/j.issn.1673-503X.2014.03.005
2013年黑龙江省夏季洪涝灾害成因分析
Forming reasons of flood disaster in summer of 2013 in Heilongjiang province
摘要
Abstract
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.关键词
降水/三江流域/洪涝灾害Key words
Precipitation/Three rivers valley/Flood disaster分类
天文与地球科学引用本文复制引用
李永生,张健,于梅,班晋..2013年黑龙江省夏季洪涝灾害成因分析[J].气象与环境学报,2014,(3):31-37,7.基金项目
黑龙江省气象局2014年科技研究项目（HQ2014018）资助。 （）
