The Fluctuation of the Cold Weather Disasters in Guangxi Based on Wavelet Theory Subtitle as needed
- 作者：Yu wenjinZhang XIaolingHuang mingliXie taoQiu Xinfa
- 会议时间：2014-07-18
- 关键词：low-temperature rain ; wavelet analysis ; weather fluctuations ; Guangxi
- 作者单位：Nanjing University of Information Science & Technology,Nanjing 210044,china
- 母体文献：南海资源环境与海疆权益学术研讨会、第十五届海峡两岸地貌学研讨会暨中国第四纪研究会海岸海洋专业委员会、中国地理学会海洋地理专业委员会2014联合学术年会论文集
- 会议名称：南海资源环境与海疆权益学术研讨会、第十五届海峡两岸地貌学研讨会暨中国第四纪研究会海岸海洋专业委员会、中国地理学会海洋地理专业委员会2014联合学术年会
- 会议地点：南宁
- 主办单位：中国地理学会海洋地理专业委员会
- 语种：chi
摘要
Based on the analysis of the 52-year climatic data from four typical stations in Guangxi with the method of Morlet wavelet, the frequency features of the cold rainy weather in Guangxi have been investigated.The results show that the average temperature between February and April in Guangxi increases gradually, the annual number of cold rainy days decreases gradually and the end dates of this kind of weather have become earlier; the average temperature of Guangxi between February and April has the robust periods of 30 years, 18-19years, 12 years and 3 years,and among them, the 30-year period is dominant.The annual number of cold rainy days has the robust periods of 30 years, 10 years and 2-5 years, but the dominant period is different with the value decreasing southward; (3) the robust period of the average temperature and the annual number of cold rainy days in Guangxi between February and April is consistent in the large-scale (30a) oscillations.These results show the advantage of the wavelet theory in the research on the frequency structure of the disaster weathers.