辽宁省场次暴雨时空分布特征研究
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摘要
基于辽宁省基础水文数据库,选取资料完整可靠的481处雨量站作为代表站,筛选出1965～2014年间最大点降水量超过200mm的超标准暴雨124场,采用线性倾向估计、M-K检验、小波分析、克里金插值等技术,系统分析了辽宁省场次暴雨时空分布特征。结果表明,辽宁省超标准暴雨年发生次数在0～6次/年之间,年际变化基本持平,并呈现出3～5、13～15年2个主要周期;年内尺度上,超标准暴雨集中发生于7～8月,且主峰降水多集中于24h之内;空间分布上,暴雨中心多位于东南部地区,出现频次由东南部向西北部递减。暴雨中心位于辽西地区的场次暴雨多发生于7月;暴雨中心位于辽东地区的场次暴雨在7、8月均有发生,且位于东南部地区的暴雨多发生于8月。
Based on the database of hydrological information in Liaoning Province,this paper selected 481 rainfall stations as the representative station,and screened out 124 heavy rainstorms with the maximum point precipitation exceeding 200 mm in 1965-2014 years.The methods such as linear tendency estimation,M-K test,wavelet analysis and Kriging interpolation were used to analyze the spatial and temporal characteristics of the heavy rainstorms.The results show that the annual occurrence number of heavy rain is between 0-6 times/year.The interannual changes are basically flat,which has 2 major cycles of 3-5 and 13-15 years.In the annual scale,the exceeded standard rainstorms usually occurred in July-August,and the main peak precipitation is mostly concentrated within 24 h.On the spatial characteristics,the rainstorm center is mostly located in the southeast of Liaoning Province,and the rainstorm frequency gradually decreased from southeast to northwest.The rainstorms which the rainstorm center located in the western region mostly occurred in July,and the rainstorms which the rainstorm center located in the western eastern region occurred in both July and August.Specially,the rainstorms which the rainstorm center located in the Southeastern region mostly occurred in August.
Based on the database of hydrological information in Liaoning Province,this paper selected 481 rainfall stations as the representative station,and screened out 124 heavy rainstorms with the maximum point precipitation exceeding 200 mm in 1965-2014 years.The methods such as linear tendency estimation,M-K test,wavelet analysis and Kriging interpolation were used to analyze the spatial and temporal characteristics of the heavy rainstorms.The results show that the annual occurrence number of heavy rain is between 0-6 times/year.The interannual changes are basically flat,which has 2 major cycles of 3-5 and 13-15 years.In the annual scale,the exceeded standard rainstorms usually occurred in July-August,and the main peak precipitation is mostly concentrated within 24 h.On the spatial characteristics,the rainstorm center is mostly located in the southeast of Liaoning Province,and the rainstorm frequency gradually decreased from southeast to northwest.The rainstorms which the rainstorm center located in the western region mostly occurred in July,and the rainstorms which the rainstorm center located in the western eastern region occurred in both July and August.Specially,the rainstorms which the rainstorm center located in the Southeastern region mostly occurred in August.
引文
[1]陈海山.辽宁省洪涝灾害分析及防洪减灾对策研究[J].中国防汛抗旱,2016,25(4):54-56.
[2]李广霞,陈传雷,才奎志.辽宁夏季降水变化特征分析[J].气象与环境科学,2008,31(2):31-34.
[3]周晓宇,赵春雨,张新宜,等.1961~2009年辽宁省气温、降水变化特征及突变分析[J].干旱区资源与环境,2013,27(10):87-93.
[4]郭国洋,任学慧.近50年辽宁省暴雨特征时空分析[J].兰州文理学院学报:自然科学版,2017,31(6):46-54.
[5]杨青,韩秀君,高松影.1960~2011年辽宁省大暴雨时空分布特性[J].气象与环境学报,2015,31(1):34-42.
[6]何丽娟.辽宁省致灾暴雨特性分析[J].水利建设与管理,2012(11):78-80.
[7]陈文杰,黄国如.海南岛极端暴雨事件的时空演变规律分析[J].水电能源科学,2015,33(8):1-4,83.
[8]康婷婷,陆桂华,侯保灯.中国年最大致洪暴雨落区随机性分析[J].水电能源科学,2012,30(8):1-4,62.
[2]李广霞,陈传雷,才奎志.辽宁夏季降水变化特征分析[J].气象与环境科学,2008,31(2):31-34.
[3]周晓宇,赵春雨,张新宜,等.1961~2009年辽宁省气温、降水变化特征及突变分析[J].干旱区资源与环境,2013,27(10):87-93.
[4]郭国洋,任学慧.近50年辽宁省暴雨特征时空分析[J].兰州文理学院学报:自然科学版,2017,31(6):46-54.
[5]杨青,韩秀君,高松影.1960~2011年辽宁省大暴雨时空分布特性[J].气象与环境学报,2015,31(1):34-42.
[6]何丽娟.辽宁省致灾暴雨特性分析[J].水利建设与管理,2012(11):78-80.
[7]陈文杰,黄国如.海南岛极端暴雨事件的时空演变规律分析[J].水电能源科学,2015,33(8):1-4,83.
[8]康婷婷,陆桂华,侯保灯.中国年最大致洪暴雨落区随机性分析[J].水电能源科学,2012,30(8):1-4,62.