灾害学2018，Vol.33Issue(1)：12-18,22,8.DOI:10.3969/j.issn.1000-811X.2018.01.003
2003-2013年汶川地震极重灾区夜间灯光年际变化分析
Analysis of the Inter-annual Variation of Nighttime Lights in the Most Affected Area of Wenchuan Earthquake from 2003 to 2013
摘要
Abstract
Because natural disasters often cause serious damage to the lights source carriers in disaster affected area,and then the lights source carriers will be repaired or newly built along with the restoration and reconstruction process.Therefore,the nighttime lights changes can reflect the impact of major natural disasters on the socio-economic.Based on DMSP-OLS nighttime lights data,analysis the inter-annual variation characteristics of nighttime lights distribution area and intensity in the most affected area of Wenchuan earthquake,and compare with the interannual variation of regional GDP and total investment in fixed assets,and also explore the correlation between nighttime lights changes and disaster losses.The research shows that the inter-annual variability of the nighttime lights distribution area and intensity are positively correlated with the annual changes of regional GDP and total investment in fixed assets in the most affected area of Wenchuan earthquake from 2003 to 2013,and the result also showing that the Sum of Nighttime Lights (SNL) and the Sum of Nighttime Lights Value (SNLV) in the disaster year are lower than those in the previous year,and continue to decrease in the first year after the disaster,and then the SNL and SNLV increase sharply and peaked in the second year after the disaster;At the same time,the reduction of SNL and SNLV have a significant correlation with the disaster indicators such as death and missing population,mortality and missing rate,and collapse rate of houses.关键词
汶川地震/灾害/夜间灯光/遥感/DMSP-OLSKey words
Wenchuan earthquake/disaster/nighttime light/remote sensing/DMSP-OLS分类
资源环境引用本文复制引用
张宝军..2003-2013年汶川地震极重灾区夜间灯光年际变化分析[J].灾害学,2018,33(1):12-18,22,8.基金项目
国家质检公益性行业科研专项项目(201510211) （201510211）
国家自然科学基金项目(913241027) （913241027）
