| 利用断头树估计2016年6月23日阜宁县龙卷风强度与尺度 |
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| 引用本文： | 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. |
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| 作者姓名： | 王蕾 许东峰 |
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| 作者单位： | 1.卫星海洋环境动力学国家重点实验室,浙江 杭州 310012; 2.国家海洋局 第二海洋研究所,浙江 杭州 310012 |
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| 基金项目： | 国家重点基础研究发展计划(“973”计划)项目资助(2014CB441501);国家自然科学基金项目资助(41406021);国家重点研发计划重点专项项目资助(2016YFC0304105);卫星海洋环境动力学国家重点实验室自主课题资助(SOEDZZ1704,SOEDZZ1505) |
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| 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。
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| 关 键 词： | 龙卷风 断头树 风速 影响范围 |
| 收稿时间： | 2017-05-31 |
Estimating the strength and scale of tornado in Funing County in June 23, 2016 by the data of broken trees |
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| 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. |
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| Authors: | WANG Lei XU Dong-feng |
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| Affiliation: | 1. State Key Laboratory of Satellite Ocean Environmental Dynamics, Hangzhou 310012, China; 2. Second Institute of Oceanography, SOA, Hangzhou 310012, China |
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| 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. |
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| Keywords: | tornado broken trees wind speed range of influence |
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