Spatial and temporal distribution characteristics of rainfall in Daqing River Basin in the Haihe "23·7" basin-wide extreme flood
XU Xiao1, LIU Junmei1, ZHANG Jiantao1, JI Mingfeng2, ZHANG Kun3, SHI Shulan2
1. Beijing Water Planning Institute, Beijing 100048; 2. Beijing Hydrology Center, Beijing 100048; 3. Beijing Hydyaulic Research Institute, Beijing 100048
Abstract：The Haihe River Basin experienced catastrophic flood, known as the "23·7" flood, due to the very heavy rainfall caused by Typhoon Doksuri. The rainfall in Daqing River Basin is the highest. Based on the hourly rainfall data of stations in Daqing River Basin, the temporal and spatial distribution characteristics of rainfall are analyzed by Kriging interpolation method. The results show that most of the rain occurred in 48 h，there are 3~4 peaks in the catchment rainfall. The ratio of maximum rainfall to total rainfall of 1 h, 6 h, 24 h and 48 h is 7%, 23%, 59% and 92%. The heavy rainfall( rainfall per hour equal or greater than 20 mm) in the basin lasts for a long time, which ranged from 59 to 74 h. The Manshuihe Station had the longest duration of heavy rainfall, accounting for 20% of the total rainfall duration. The rainstorm center is not fixed, the rainstorm center at 15:00 and 17:00 on July 30 was located in the southwest of the basin, the rest of the rainstorm center was basically located in the north and east of the basin, and the rainstorm center at 24: 00 on July 31 was located in the southwest of the basin. The rainfall is unevenly distributed in the basin, The spatial distribution of 1 h, 6 h and 24 h maximum rainfall is basically the same. The high value area is located in the eastern part of the northern basin, the low value area is located in the southern basin, and the high value area of the 72 h maximum rainfall is distributed in the central part of the basin.
徐晓, 刘军梅, 张建涛, 季明锋, 张焜, 石树兰. 海河“23·7”流域性特大洪水大清河流域降雨时空分布特征[J]. 中国防汛抗旱, 2024, 34(1): 45-51.
XU Xiao, LIU Junmei, ZHANG Jiantao, JI Mingfeng, ZHANG Kun, SHI Shulan. Spatial and temporal distribution characteristics of rainfall in Daqing River Basin in the Haihe "23·7" basin-wide extreme flood. journal1, 2024, 34(1): 45-51.
[1] IPCC.Climate change 2021:The physical science basis. Contribution of Working Group I to the sixth assessment report of the intergovernmental panel on climate change[R].2021. [2] 孙林海,王凌,李威,等.2022年我国主要天气气候特征[J]. 中国防汛抗旱,2023,33(1):8-15,21. [3] Leng G Y,Tang Q H,Rayburg S.Climate change impacts on meteorological,agricultural and hydrological droughts in China[J].Global and Planetary Change,2015,126:23-34. [4] 李林,汪青春,张国胜,等. 黄河上游气候变化对地表水的影响[J]. 地理学报,2004(5):716-722. [5] 夏军强,董柏良,李启杰,等. 近年城市洪涝致灾的水动力学机理分析与减灾对策研究[J]. 中国防汛抗旱,2022,32(4):66-71. [6] 张午朝,高冰,马育军. 长江流域1961~2015年不同等级干旱时空变化分析[J]. 人民长江,2019,50(2):53-57. [7] 袁冯. 北京市暴雨分布规律与洪涝灾害峰现评估研究[D]. 北京:北京建筑大学,2020. [8] 王国荣,王令. 北京地区夏季短时强降水时空分布特征[J]. 暴雨灾害,2013,32(3):276-279. [9] 刘家宏,梅超,王佳,等. 北京市门头沟流域"23·7"特大暴雨洪水过程分析[J]. 中国防汛抗旱,2023,33(9):50-55. [10]郑祚芳,王在文,高华. 北京地区夏季极端降水变化特征及城市化的影响[J]. 气象,2013,39(12):1635-1641. [11]马京津,李书严,王冀. 北京市强降雨分区及重现期研究[J]. 气象, 2012,38(5):569-576. [12]Tabios G Q,Salas J D.A comparative analysis of techniques for spatial analysis precipitation[J].Journal of the American Water Resources Association,2007,21(3):365-380.
2024, Vol. 34 
