利用断头树估计2016年6月23日阜宁县龙卷风强度与尺度

王蕾; 许东峰

doi:10.3969/j.issn.1001-909X.2017.04.003

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海洋学研究 ›› 2017, Vol. 35 ›› Issue (4) : 20-33. DOI: 10.3969/j.issn.1001-909X.2017.04.003

研究论文

利用断头树估计2016年6月23日阜宁县龙卷风强度与尺度

王蕾^1,2, 许东峰^*1,2

作者信息 +

Estimating the strength and scale of tornado in Funing County in June 23, 2016 by the data of broken trees

WANG Lei^1,2, XU Dong-feng^*1,2

Author information +

文章历史 +

摘要

2016年6月23日在盐城市阜宁县附近发生特大龙卷风事件,人员财产损失惨重。本文利用天气图和多普勒雷达图等气象资料,对此次龙卷风的产生机制进行分析,再根据受灾相对较严重的5个地区断头树情况的调查资料,以“大风中风速达到约42 m/s时,大风经过的树林中折断树的百分比急剧升高到50%”为依据,来估计风速达到42 m/s的龙卷风范围。调查结果显示:大气不稳定层结,冷、暖湿空气交汇,风的垂直风切变是此次龙卷风的重要诱发因子;此次龙卷风风速达到42 m/s的影响范围的长度至少达到20 km,最大宽度至少达到952 m。

Abstract

A violent tornado occurred in Funing County, Yancheng City in June 23, 2016, causing heavy casualties and enormous property loss. Based on meteorological data, such as weather maps and doppler weather radar maps, the mechanism of the tornado was analyzed. Then the range of wind speed exceeding 42 m/s was estimated based on the conclusion inferred by other author that “when the wind speed reaches about 42 m/s in the gale, the percentage of broken trees in the woods rises sharply to 50%”, according to the investigation data of the broken trees in the five areas where the disaster was relatively serious. The results show that atmospheric unstable stratification, cold, warm and humid air intersection, wind vertical shear can induce tornadoes; the length of range of the tornado wind speed exceeding 42 m/s is at least 20 km, and the maximum width is at least 952 m.

导出引用

王蕾, 许东峰. 利用断头树估计2016年6月23日阜宁县龙卷风强度与尺度[J]. 海洋学研究. 2017, 35(4): 20-33 https://doi.org/10.3969/j.issn.1001-909X.2017.04.003

WANG Lei, XU Dong-feng. Estimating the strength and scale of tornado in Funing County in June 23, 2016 by the data of broken trees[J]. Journal of Marine Sciences. 2017, 35(4): 20-33 https://doi.org/10.3969/j.issn.1001-909X.2017.04.003

中图分类号： P445

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