湖北浠水核電站周邊地區龍卷風特征
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湖北省氣象局重點項目“湖北省氣候變化監測分析業務系統研制(QYZ201009)”資助


Characteristics of Tornadoes around a Nuclear Power Staion in Hubei
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    摘要:

    根據湖北省浠水核電站周邊300 km×300 km區域范圍內1964—2007年龍卷風資料,對龍卷風的時間分布和災害特征進行了分析。結果表明:龍卷風有明顯的時間分布,一年之中主要集中在春、夏兩季,秋、冬季無龍卷風發生,以7月最多;一天之中,午后至傍晚最多,集中在16:00—18:59之間,龍卷風平均持續時間27 min。近44年,21世紀頭7年中龍卷風出現最為頻繁。龍卷風出現時,蒲福風力等級一般在10級以上,集中出現在12級;富士達風力等級集中出現在F0、F1級,F2級以上出現的幾率較小。龍卷風多以自西向東方向移動,影響寬度平均120 km,平均帶長2166 km。龍卷風災害主要是風災,往往伴有冰雹、暴雨、雷擊,破壞力極強。

    Abstract:

    The characteristics of tornado events around the Xishui nuclear power plant of Hubei Province from 1964 to 2007 are analyzed based on the data from the area of 300 km×300 km around the nuclear power plant in the ways such as meteorological station records, climate impact assessment reports, etc. The results indicate that: there was apparent temporal distribution in those tornado events, such as daily, monthly, and decadal scale variation. The tornadoes concentrated mostly in spring and summer, especially in July, and occurred frequently from midday to early evening, especially at afternoon; however, there was seldom tornado occurred in autumn and winter. The average lasting time for all tornadoes is 27 min. During the past 44 years, tornadoes appeared most frequently in the first seven years of the 21st century. The wind speed grade is mostly 10 on the Beaufort scale, concentrated around 12. The most frequent moving direction of the tornadoes is from west to east, and the average affected width is 120 km, and the average affected length is 2166 km. The most severe tornadoinduced disaster is that induced by the extremely strong wind, which mostly accompanies hailstones, heavy rainfall, and lighting strikes.

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馬德栗,陳正洪,靳寧,郭渠.湖北浠水核電站周邊地區龍卷風特征[J].氣象科技,2011,39(4):520~524

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  • 收稿日期:2010-03-25
  • 定稿日期:2010-06-23
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