鎮(zhèn)江市新一代暴雨強度公式研制及雨型設計

doi:10.3969/2015jms.0028

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鎮(zhèn)江市新一代暴雨強度公式研制及雨型設計
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                        10.3969/2015jms.0028
                    
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基金項目:國家自然科學基金資助項目(41405092);江蘇省青年氣象科研基金(Q201404)

Research on new generation rainstorm intensity formula and design of rainfall hyetograph in Zhenjiang

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用鎮(zhèn)江市1980—2013年連續(xù)34 a的降水觀測資料,通過數(shù)據審核處理建立暴雨統(tǒng)計樣本。對鎮(zhèn)江市近34 a的暴雨特征進行統(tǒng)計分析,發(fā)現(xiàn)其存在較為顯著的階段性變化特征,具備開展新一代暴雨強度公式研制的必要?；诖?采用年最大值法展開修訂,基于皮爾遜III型分布確定概率曲線并進行參數(shù)推求,研制了鎮(zhèn)江市新一代暴雨強度公式。在此基礎上,開展鎮(zhèn)江市短歷時暴雨雨型設計研究。統(tǒng)計發(fā)現(xiàn):短歷時暴雨以單峰型分布為主,其雨峰位置大部分出現(xiàn)在整個暴雨過程的前半段。進而采用芝加哥法雨型進行雨型設計,確定雨峰位置系數(shù),得到鎮(zhèn)江市短歷時暴雨的雨型設計過程,短歷時暴雨的瞬時雨強最高達5.9 mm/min,過程累計降水最高達105 mm。

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Based on the precipitation data from 1980 to 2013 in Zhenjiang, the reliable rainstorm statistics sample was collected through audits of data quality. The statistical analysis on the rainstorm characteristics of Zhenjiang over recent decades found that the rainstorm obvious variation characteristics in phase exists, which is necessary to conduct the new generation rainstorm intensity formula research. The revision of rainstorm intensity formula in Zhenjiang was carried out by the annual maximum value method, the probability curves were followed by Pearson-III distribution, the formula parameters were calculated, so the new rainstorm intensity formula of Zhenjiang has been deducted. On this basis, the statistical analysis on rainfall hyetograph found that the short duration rainstorm presents unimodal distribution and the peak position appears in the first half rainstorm process. Moreover, the peak position coefficient was calculated and the rainfall hyetograph of short duration storm was designed by the Chicago hyetograph. The results showed that the maximum instantaneous rainstorm intensity can reach 5.9 mm/min and the maximum accumulated rainfall can reach 105 mm.

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莊智福,王珂清,楊杰,陳兵,朱海濤.鎮(zhèn)江市新一代暴雨強度公式研制及雨型設計.氣象科學,2015,35(4):506-513 ZHUANG Zhifu, WANG Keqing, YANG Jie, CHEN Bing, ZHU Haitao. Research on new generation rainstorm intensity formula and design of rainfall hyetograph in Zhenjiang. Journal of the Meteorological Sciences,2015,35(4):506-513

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收稿日期:2014-12-31
最后修改日期:2015-03-20
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在線發(fā)布日期: 2015-09-11
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