XU Ximeng,ZHENG Fenli,GUAN Yinghui,et al.Spatiotemporal Characteristics of Earthquake Disasters and Their Damages Within 2013 in China[J].Research of Soil and Water Conservation,2015,22(04):321-325.
2013年我国地震灾害时空特征与灾害损失分析
- Title:
- Spatiotemporal Characteristics of Earthquake Disasters and Their Damages Within 2013 in China
- 分类号:
- P315.9
- 摘要:
- 基于对2013年我国地震发生频次及受灾情况的统计，系统分析了地震灾害发生的时空分布特征，并探讨了各省区地震释放能量与地震灾害损失的差异性。结果表明：2013年我国大陆地区中强震异常活跃，特别是芦山地震造成了巨大的人员伤亡与经济损失。4.0级以上地震频次年内分布主要受较强余震次数的影响，而年内地震释放能量分布受控于强震。2013年我国地震发生频次在空间上呈现明显的地域分异特征，整体上呈现西密东疏的特点，特别是南北地震带上强震活跃，其中四川、云南及其交界地带是地震发生频次最多的区域。大多数省区的震级分布特征均为弱震数量多，强震数量少。地震造成的经济损失不仅与地震所释放的能量有关，也与区域经济发展水平有明显关系。四川、甘肃是受灾最严重的省区，人员伤亡与经济损失巨大，云南、吉林由于强震多，经济损失也较大。
- Abstract:
- Based on statistics of frequencies of earthquake disasters and their damages within 2013 in China, we analyzed the spatiotemporal distribution characteristics of earthquake disasters, and discussed the damage differences among provinces. The conclusions can be drawn as follows. Moderately strong earthquakes were abnormal active in 2013 in mainland China, especially the Lushan earthquake in Sichuan Province caused huge number of casualties and economic losses. The number of aftershock affected earthquake frequency on the time scale and the energy distribution released by earthquakes were influenced by macro earthquake. Most earthquakes happened in western China and macro earthquakes were active in Chinese North-South seismic belt, with a disciplinary spatial distribution. Most of earthquakes occurred in Sichuan, Yunnan and their border lands. Moderately strong earthquakes were also active in Jilin. In most provinces, slight earthquakes occurred more frequently while the great earthquakes were seldom. It can be found that the economic losses caused by quakes were associated with the energy liberation through earthquakes as well as the development condition of economy in different provinces. Damages in Sichuan and Gansu are the most severe in terms of casualties and property losses, followed by Yunnan and Jilin.
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备注/Memo
收稿日期:2014-08-30;改回日期:2014-09-30。
作者简介:徐锡蒙(1993-),男,河南卫辉人,博士研究生,主要从事土壤侵蚀与地质灾害研究。E-mail:xuxm@nwsuaf.edu.cn
通讯作者:郑粉莉(1960-),女,陕西蓝田人,教授,博士生导师,主要从事土壤侵蚀过程、预报和土壤侵蚀环境效应评价研究。E-mail:flzh@ms.iswc.ac.cn