基于动态聚类分析和模糊模式识别法的北京城区汛期降雨时空分布规律研究
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摘要
以北京城区近十几年汛期50场暴雨过程为样本,利用动态聚类分析和模糊模式识别方法对单站雨型和降雨整体空间分布特征进行了研究,得到北京城区汛期最容易发生的雨型以及时空分布规律。结果表明,北京城区汛期主要发生前单峰型雨,峰值集中且极值雨量大,容易造成内涝积水。发生双峰型雨的次数较少,且极值雨量较小,对内涝积水影响相对较小。
Dynamic cluster analysis and fuzzy pattern recognition method were used to study the spatial distribution characteristics of rain pattern and rainfall at single station, based on the 50 typical rainstorm processes in Beijing City during the flood periods in recent years. The results show that the unimodal type is mainly temporal pattern. The maximum precipitation is concentrated and the extreme value rainfall is large, which is easy to cause waterlogging. The bimodal type is seldom.
Dynamic cluster analysis and fuzzy pattern recognition method were used to study the spatial distribution characteristics of rain pattern and rainfall at single station, based on the 50 typical rainstorm processes in Beijing City during the flood periods in recent years. The results show that the unimodal type is mainly temporal pattern. The maximum precipitation is concentrated and the extreme value rainfall is large, which is easy to cause waterlogging. The bimodal type is seldom.
引文
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[2]岑国平,沈晋,范荣生.城市设计暴雨雨型研究[J].水科学进展,1998,(3):41-46.(CEN Guoping, SHEN Jin, FAN Rongsheng. Research onrainfall pattern of urban design storm[J]. Advances in Water Science,1998,(3):41-46.(in Chinese))
[3] Keifer C J, Chu H H. Synthetic storm pattern for drainage design[J].Journal of Hydraulics Division ASCE, 1957,83(HY4):1-25.
[4] D F Kibler. Urban stormwater hydrology[A]. American GeophysicalUnion’s Water Resources Monograph 7[C], 1982:48-60.
[5]汪子棚,王亚娟,白国营,等.北京市暴雨分区研究[J].北京水务,2011,(5):8-11.(WANG Zipeng, WANG Yajuan, BAI Guoying, et al.Study on the zoning of rainstorm in Beijing[J]. Beijing Water,2011,(5):8-11.(in Chinese))
[6]王彬雁,赵琳娜,巩远发,等.北京降雨过程分型特征及短历时降雨重现期研究[J].暴雨灾害, 2015,(12):302-308.(WANG Binyan, ZHAOLinna, GONG Yuanfa, et al, Characteristics of temporal pattern andreturn period of short-duration rainfall at Beijing observatory[J].Torrential Rain and Disasters, 2015,(12):302-308.(in Chinese))
[7]刘伟东,尤焕苓,任国玉,等.北京地区精细化的降水变化特征[J].气候与环境研究,2014,(1):61-68.(LIU Weidong, YOU Huanling, RENGuoyu, et al. Subtle precipitation characteristics in Beijing area[J].Climate and Environmental Research, 2014,(1):61-68.(in Chinese))
[8]李建,宇如聪,王建捷.北京市夏季降水的日变化特征[J].科学通报,2008,(7):829-832.(LI Jian, YU Rucong, WANG Jianjie. Diurnal vari-ation characteristics of summer precipitation in Beijing[J]. Sciencein China, 2008,(7):829-832.(in Chinese))