Disaster Characteristics of Tornadoes in BeijingTianjinHebei Region
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    Abstract:

    The wind events caused by tornadoes from 1956 to 2016 in the BeijingTianjinHebei region are evaluated and classified by means of the expert evaluation method according to the Enhanced Fujita Scale, based on the weather reports, the Handbook of China Meteorological Disasters, the meteorological disaster database, local chronicles in archives centers and other relevant historical documents. The spatialtemporal distribution and disaster characteristics of tornadoes are analyzed through the methods of time series analysis, trend analysis and spatial analysis. The main results show that there were 188 tornadoes confirmed in the BeijingTianjinHebei region from 1956 to 2016. In the spatial distribution, there were two areas where tornadoes occurred mostly: Zhangbei County, Shangyi County, Guyuan County and Kangbao County of Zhangjiakou; the eastern part of BeijingTianjinHebei region, especially the coastal areas of Cangzhou, Tianjin, Tangshan and Qinhuangdao. In the temporal distributions, the highest occurrence frequency of tornadoes was the period of 1985 to 1993 and then tornadoes started to decrease after the 1990s. Tornadoes occurred mostly in summer, which accounts for 81.9%, and occurred mainly from 11:00 to 20:00. As for the 122 tornadoes with detail disaster records, based on the Enhanced Fujita (EF) Scale, the results of expert evaluation and classification are: 1 in EF4, 1 EF3, 14 EF2, 52 EF1 and 54 EF0.

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杜康云,顾光芹,许启慧,杨铭,刘金平,白璐瑶.京津冀区域龙卷风灾害特征分析[J].气象科技英文版,2019,47(1):140-146.

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History
  • Received:January 18,2018
  • Revised:October 23,2018
  • Adopted:
  • Online: February 27,2019
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