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首页> 外文期刊>Physics and chemistry of the earth >Spatiotemporal distribution of landing tropical cyclones and disaster impact analysis in coastal China during 1990-2016
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Spatiotemporal distribution of landing tropical cyclones and disaster impact analysis in coastal China during 1990-2016

机译：1990 - 2016年沿海地区着陆热带气旋和灾难影响分析的时空分布

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摘要

To assess the impact of tropical cyclones (hereafter as TCs) along the southeast coast of China, this study analyzed the spatiotemporal variation of TC-induced disasters, interannual variability of disasters and their intensities by using the data during 1990-2016. Economic losses were calculated by using the three disaster indices: based on the area of affected crops, number of collapsed buildings, and direct economic losses. Entropy method was used to improve the comprehensive disaster index impact model for the first time and use it in tropical cyclone disaster assessment. It is found that there was no obvious interannual variation in the total number of TCs affecting China, although low-intensity TCs decreased and high-intensity TCs increased significantly. Conditions in 2015 were used as a reference to convert the loss index. Results show that 1997 was a turning point in the combined disaster index. Moreover, interannual fluctuations were severe in the former period, but lower in the latter and smoother. According to the economic calculations from the three disaster indices, the economic value of collapsed buildings and affected crops tended to decrease over the interdecadal period, whereas there was an obvious increasing interdecadal trend in direct economic losses. This result indicates that the tropical cyclone induced disasters has gradually shifted from primary industry to secondary and tertiary industry. Results from this paper will provide science based support to policy makers to reduce the economic losses in natural disasters.
机译：为了评估热带气旋（以下，作为TCS）沿着中国东南沿岸的影响，本研究分析了TC引起的灾害的时空变化，通过在1990 - 2016年期间使用数据来利用数据造成灾害，灾害际变化及其强度。通过使用三个灾难指标计算经济损失：基于受影响作物，折叠建筑物数量和直接经济损失的面积。熵方法用于改善综合灾害指数影响模型的第一次，并在热带气旋灾害评估中使用它。结果发现，影响中国的TCS总数没有明显的持续变化，尽管低强度TCS减少，高强度TCS显着增加。 2015年的条件被用作转换损失指数的参考。结果表明，1997年是灾害指数中的转折点。此外，前期的续际波动严重，但后者较低，更平滑。根据三个灾难指数的经济计算，倒塌的建筑物的经济价值和受影响的农作物倾向于跨越间期间的减少，而直接经济损失存在明显的跨界跨界趋势。该结果表明，热带气旋诱导的灾害已经逐渐从主要行业转移到中学和第三产业。本文的结果将为政策制定者提供基于科学的支持，以减少自然灾害的经济损失。

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