基于夜间灯光数据的地震损失和经济恢复的评估
Assessment of Earthquake Losses and Economic Recovery Based on Nighttime Light Data
叶倩 1佟歆1
作者信息
摘要
地震灾害及其灾后重建对人类社会产生了深远影响,地震间接经济损失不仅影响区域经济复苏政策,也关系到国家层面的经济援助.由于经济活动的跨区域性和数据获取的难度,间接经济损失调查难以覆盖所有经济活动.然而,一个地区的夜间灯光(NighttimeLight,NTL)可以反映该地区的经济活动.重点介绍2023年土耳其哈塔伊省地震造成的间接经济损失以及基于夜间光图像的恢复重建进展评价.首先,基于震前数据,建立国内生产总值(Gross Domestic Product,GDP)夜间灯光参数的函数关系.其次,通过地震后灾区夜间光衰减来评估地震的间接损失对比直接损失,计算各个地区损失经济.最后,对以灯光亮度损失为特征的灾害损失、经济损失、人口影响区进行统计评价.
Abstract
Earthquake disasters and their post-disaster reconstruction have a profound impact on human society,and indirect economic losses from earthquakes affect not only regional economic recovery policies,but also are re-lated to economic assistance at the national level.Due to the cross-regional nature of economic activities and the difficulty of data acquisition,it is difficult for indirect economic loss surveys to cover all economic activities.How-ever,Nighttime Light(NTL)in a region can reflect its economic activities.This project mainly introduces the indi-rect economic losses caused by the earthquake in Hatay Province,Turkey in 2023,as well as the evaluation of the progress of recovery and reconstruction based on nighttime light images.First,a functional relationship between the Gross Domestic Product(GDP)and the nighttime light parameter is established based on pre-earthquake data.Sec-ond,the indirect losses of the earthquake are evaluated by the attenuation of nighttime light in the disaster areas af-ter the earthquake and compared with its direct losses,and the loss economy of each region is calculated.Finally,di-saster losses,economic losses and population impact areas characterized by light brightness losses are statistically evaluated.
关键词
夜间灯光/经济损失/人口影响/灾后重建Key words
Nighttime light/Economic loss/Population impact/Post-disaster reconstruction引用本文复制引用
基金项目
大学生创新创业省级项目(S202311775030)
出版年
2024
NETL
NSTL
万方数据