Urban waterlogging resilience assessment and postdisaster recovery monitoring using NPP-VIIRS nighttime light data: A case study of the ?July 20, 2021? heavy rainstorm in Zhengzhou City, China
Authors:Liu, Yaohui Liu, Wenyi Lin, Yu Zhang, Xinyu Zhou, Jie Wei, Benyong Nie, Gaozhong Gross, Lutz
Volume:90
DOI:10.1016/j.ijdrr.2023.103649
Published:2023
Document Type:Article
Abstract:In recent years, with the acceleration of urbanization and abnormal changes in the overall cli-mate, cities have been increasingly threatened and affected by disasters. Assessing and improving urban resilience, as well as postdisaster recovery monitoring, are of great significance for rele-vant municipal departments. Taking the heavy rainstorm event that occurred on July 20, 2021, in Zhengzhou City as an example, this study explored the resilience and postdisaster recovery of Zhengzhou City based on remote sensing data and other multisource data. First, we calculated the resilience assessment index and built an assessment model. Then, we analyzed and evaluated the resilience. Finally, based on NPP-VIIRS nighttime light data, we verified the accuracy of the re-silience results and dynamically monitored the postdisaster recovery process. The results show that the overall resilience of Zhengzhou City to waterlogging disasters is low in the southwest and high in the northeast. The changing trend of the nighttime light brightness following the disaster was consistent with the resilience assessment results. Then, due to rescue work, the light index in-creased briefly in July; Due to the serious impact of the disaster, the facilities were damaged, and the light index was reduced in August. With the development of recovery work, the disaster -influenced and light index areas gradually recovered and exceeded the predisaster level. Corre-sponding urban resilience strategies were proposed based on the assessment results. This study can provide a scientific basis and reference for relevant aspects such as disaster prevention, re-covery, and reconstruction in Zhengzhou City and other cities.
Author Information
Corresponding Author:Zhou, J (corresponding author), 1 Huayanli,Yayun St, Beijing, Peoples R China.
Reprint Address:Zhou, J (corresponding author), 1 Huayanli,Yayun St, Beijing, Peoples R China.
Addresses:[Liu, Yaohui; Liu, Wenyi; Lin, Yu; Zhang, Xinyu] Shandong Jianzhu Univ, Sch Surveying & Geoinformat, Jinan 250101, Peoples R China; [Liu, Yaohui] Shandong Univ Sci & Technol, Coll Geodesy & Geomatics, Qingdao 266590, Peoples R China; [Liu, Yaohui; Zhou, Jie; Wei, Benyong; Nie, Gaozhong] China Earthquake Adm, Inst Geol, Beijing 100029, Peoples R China; [Liu, Yaohui; Gross, Lutz] Univ Queensland, Sch Earth & Environm Sci, Brisbane, Qld 4072, Australia; [Zhou, Jie; Nie, Gaozhong] China Earthquake Adm, Key Lab Seism & Volcan Hazards, Beijing 100029, Peoples R China; [Zhou, Jie] 1 Huayanli,Yayun St, Beijing, Peoples R China
E-mail Addresses:liuyaohui20@sdjzu.edu.cn; liuyaohui20@sdjzu.edu.cn; 2022165107@stu.sdjzu.edu.cn; 2022165111@stu.sdjzu.edu.cn; zhoujie@ies.ac.cn; bywei1982@163.com; niegz@ies.ac.cn; l.gross@uq.edu.au