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Extreme rainfall has been frequent in recent years, leading to disasters such as urban flooding, flash floods and mudslides. Since long duration rainfall is often accompanied with large rainfall amount, its disaster causing ability cannot be ignored. The rainfall pattern has a large impact on the disasters caused by rainfall, and it is of great significance to carry out the research on rainfall pattern of long duration rainfall for disaster prevention and mitigation. Cangxi county in Sichuan Province is taken as the study area. Based on the hourly rainfall data at the Cangxi station from 2013 to 2022, 33 long duration rainfall events are classified into 7 different rainfall patterns by using the integrated rain peak location coefficients and the concentration trend indexes. And then the time-range distributions of each typical rainfall pattern are determined. The results show that the long duration rainfall in the region is mainly concentrated rainfall with peaks at the front or center, and the probability of scattered and uniform rainfall is small. The rainfall distribution of different rainfall types is obviously different in the early stage of the rainfall. So, it is possible to predict the rainfall types in the middle and early stages of the whole rainfall by combining the meteorological data, which can provide a scientific basis for the related protection work.
[1] 欧淑芳，叶兴成，王飞，等.P&C雨型在城市排水计算中的适用性分析[J].水电能源科学，2018,36(2):32-35.
[2] 谭盛杰，林炳章，林刚.短历时暴雨高风险区划图及其应用[J].水电能源科学，2014,32(12):14-16.
[3] 舒章康，李文鑫，张建云，等.中国极端降水和高温历史变化及未来趋势 [J].中国工程科学，2022,24(5):116-125.
[4] HUFF F A.Time distribution of rainfall in heavy storms [J].Water resources research,1967,3(4):1007-1019.
[5] ZIEGLER A D,NEGISHI J N,SIDLE R C,et al.Impacts of logging disturbance on hillslope saturated hydraulic conductivity in a tropical forest in Peninsular Malaysia [J].Catena,2006,67(2):89-104.
[6] DUNKERLEY D.Intra-event intermittency of rainfall:an analysis of the metrics of rain and no-rain periods [J].Hydrological processes,2015,29(15):3294-3305.
[7] DUNKERLEY D.Identifying individual rain events from pluviograph records:A review with analysis of data from an Australian dryland site [J].Hydrological processes,2008,22(26):5024-5036.
[8] BONTA J V,RAO A R.Factors affecting the identification of independent storm events [J].Journal of hydrology,1988,98(3/4):275-293.
[9] BONTA J V.Characterizing and estimating spatial and temporal variability of times between storms [J].Transactions of the ASAE,2001,44(6):1593-1601.
[10] RESTREPO-POSADA P J,EAGLESON P S.Identification of independent rainstorms [J].Journal of hydrology,1982,55(1-4):303-319.
[11] WANG A Q,QU N L,CHEN Y F,et al.A 60-minute design rainstorm for the urban area of yangpu district,Shanghai,China [J].Water,2018,10(3):312.
[12] 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，2015,34(4):302-308.
[13] 王光明，廖玉芳，曾向红，等.湖南短历时暴雨雨型分析 [J].暴雨灾害，2017,36(1):86-90.
[14] 庄智福，王珂清，杨杰，等.镇江市新一代暴雨强度公式研制及雨型设计 [J].气象科学，2015,35(4):506-513.
[15] 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(1):42-47.
[16] 刘美琪.基于特征雨型的山洪灾害雨量预警模式研究 [D].郑州：郑州大学，2019.
[17] 殷水清，王文婷.土壤侵蚀研究中降雨过程随机模拟综述 [J].地理科学进展，2020,39(10):1747-1757.
[18] 黄吉霖，蒋青松，朱滔，等.基于局部回归的城市特征降雨研究 [J].中国给水排水，2022,38(17):131-138.
[19] 四川省水利厅.四川省中小流域暴雨洪水计算手册 [M].成都：四川省水利厅，1984.
Basic Information:
DOI：10.20040/j.cnki.1000-7709.2024.20231653
China Classification Code:P426.6
Citation Information:
[1]YANG Zhi,XIA Chun-hua,LIU Lu ,et al.Research on Rainfall Pattern of Long Duration Rainfall Based on Characteristic Parameters[J].Water Resources and Power,2024,42(09):66-69.DOI:10.20040/j.cnki.1000-7709.2024.20231653.
Fund Information:
四川省交通运输科技项目(2022ZL06)
2024-07-24
2024-07-24
2024-07-24