Abstract
The spatial and temporal distribution characteristics of rainstorm disaster in Sichuan Province were investigated by statistical analysis method based on 2002-2015 rainstorm disaster data of Sichuan Province. As shown by the results, the rainstorm disaster in Sichuan Province was distributed mainly in four regions including Liangshan Prefecture and Sichuan Basin during 2002-2015, and the rainstorm disaster distribution had a good corresponding relationship with the rainstorm center regions; in terms of annual variation trend, the variation of rainstorm disaster frequency showed a significant quasi-2-3-year oscillation period; in terms of monthly distribution, June, July and August saw the heaviest rainstorms; the high death toll from rainstorms was attributed to not only routine rainfall, occurrence time and terrain feature, but also the populace’s awareness of disaster prevention and the disaster prevention measures they adopted. The research result has important significance to improve the pertinence and practicability of decision-making meteorological services.
Highlights
Because of the significant difference in terrain between the eastern and western regions, rainstorm distribution in Sichuan Province has remarkable regional characteristics
The spatial and temporal distribution characteristics of rainstorm disaster in Sichuan Province were investigated by statistical analysis method based on 2002-2015 rainstorm disaster data of Sichuan Province
This paper detailed the spatial and temporal distribution characteristics of rainstorm disaster in Sichuan Province by statistical analysis method based on relevant cases of rainstorm and 2002-2015 rainstorm disaster data of Sichuan Province, coming to the following main conclusions: 1) Rainstorm disaster is distributed mainly in the northeastern Sichuan Basin including Dazhou and Bazhong, the northwestern basin including Mianyang and Ziyang, the southwestern basin including Ya’an, Meishan and Leshan, and the central Panzhihua-Xichang region
Summary
Because of the significant difference in terrain between the eastern and western regions, rainstorm distribution in Sichuan Province has remarkable regional characteristics. In order that decision-making service data can be more specific and practical, in this paper we did research into the spatial and temporal distribution characteristics of the rainstorm disaster occurring in Sichuan Province during 2002-2015, and investigated the possible causes of disaster formation based on the condition of the rainstorm disaster in Sichuan Province, in the hope of further developing a basic idea for the analysis of disastrous weather effects, to lay a solid foundation for the improvement of decision-making service efficiency and data compiling quality. Through the statistical analysis of relevant data, this paper has access to more serious areas of heavy rainstorms, to strengthen the monitoring of such areas, so as to make more accurate forecast of heavy rain, reducing the losses caused by rainstorms, and comprehensively protecting people’s property
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