中国防汛抗旱2024，Vol.34Issue(2)：50-55,6.DOI:10.16867/j.issn.1673-9264.2023084
基于Sentinel-1和Sentinel-2影像的河南扶沟县洪涝灾害遥感监测评估研究
Remote sensing monitoring and evaluation of flood disaster in Fugou County of Henan Province based on Sentinel-1 and Sentinel-2 images
摘要
Abstract
Flood disasters are the most important of the types of natural disasters with high frequency and wide impact,posing a serious threat to social and economic development and the safety of people's lives and property.The experiment selected Fugou County of Zhoukou City,which was heavy hit by the"7.20"exceptionally heavy rainstorm event in Henan Province as the research area,selected the sentinel-1 and Sentinel-2 images before and after the flood disaster as the main data sources,used the SVM to classify the land use of the sentinel-2 image before the disaster and quickly extracted the water body area during and after the disaster on the Sentinel-1 image based on the SDWI dual polarization water index method,and combined with the GIS to evaluate the disaster situation in the research area.The results show that:①The overall accuracy of the land use classification map extracted based on the SVM is 95.85%.②The results of the water body range extracted using the SDWI water body index method show that the water body area during and after the disaster is 36.468 km2 and 18.770 km2,and the overall accuracy is 97.6%and 95.4%.③The extraction results show that Caoli Township was the most seriously affected with the maximum water body change area of 12.63 km2.关键词
Sentinel-1/Sentinel-2/洪涝灾害/水体指数SDWI/灾情评估/河南郑州"7·20"特大暴雨Key words
Sentinel-1/Sentinel-2/flood disaster/SDWI water body index/disaster assessment/"7·20"extremely heavy rainstorm in Zhengzhou,Henan Province分类
资源环境引用本文复制引用
姜晗兵,邓文彬..基于Sentinel-1和Sentinel-2影像的河南扶沟县洪涝灾害遥感监测评估研究[J].中国防汛抗旱,2024,34(2):50-55,6.基金项目
新疆维吾尔自治区自然科学基金(2022D01C55). （2022D01C55）
