RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2018, Vol. 27 >> Issue (03): 583-.doi: 10.11870/cjlyzyyhj201803014

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Variation Characteristics of the HazardInducing Tropical #br# Cyclones and Their Direct Economic Loss in the Coastal #br# Region of Southeastern China During 1986-2015

CHEN Xue1, WANG Yanjun1, WEN Shanshan2,5, SU Buda 1,2,3, #br# ZHAO Jing1,GAO Chao4， JIANG Tong 1,3   

  1. (1.Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information
    Science & Technology, Nanjing 210044, China;2. State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology
    and Geography, Chinese Academy of Sciences, Urumqi 830011, China;3. National Climate Center, China Meteorological
    Administration, Beijing 100081, China; 4.Department of Geography & Spatial Informention Techniques,
    Ningho University Ningbo 315211,China；5. University of Chinese Academy of Sciences, Beijing 100049, China)
  • Online:2018-03-20

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Abstract:

Hazardinducing tropical cyclones are defined as those causing economic losses. Based on the direct economic losses, socioeconomic data, and track data of 180 hazardinducing tropical cyclones that occurred in the provinces of Zhejiang, Fujian and Guangdong during 1986-2015, this study analyzes the spatiotemporal distribution of the frequency, direct economic losses, wind speed and precipitation of the hazardinducing tropical cyclones in coastal region of southeastern China. 1) The results reveal that the total frequency of the hazardinducing tropical cyclones in these three provinces have shown an increasing trend during 1986-2015. The highest frequency was found in Guangdong Province. Comparatively lower frequency was found in Zhejiang Province, while the frequency of those tropical cyclones with intensity higher than typhoon has shown a significant rising trend. 2）The total direct economic losses caused by the hazardinducing tropical cyclones in these three provinces have been increasing during 1986-2015. However, the percentages of the direct economic losses to regional GDP in these provinces have all been decreasing to different extents during 1986-2015, with that of Guangdong declining the most. Zhejiang province suffered the greatest direct economic loss, while the direct economic loss in Fujian province was relatively small. 3) The direct economic losses of the hazardinducing tropical cyclones are closely related to the wind speed and the rainfall. The influence of wind speed was significant in Guangdong, while the rainfall has significant impacts in Zhejiang. The eastern and southern Zhejiang, northeastern Fujian as well as the eastern and southwestern Guangdong have been affected frequently by the hazardinducing tropical cyclones with high wind speed and precipitation, and thus suffered the most serious direct economic losses. This study provides references for the disaster prevention and mitigation policies of tropical cyclone in the coastal region of southeastern China.
 

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