Assessment of Storm Surge and Flood Inundation in Chittagong City of Bangladesh Based on ADCIRC and GIS

作     者：LIU Yuxin LI Songtao WANG Zhifeng LIU Yuxin;LI Songtao;WANG Zhifeng

作者机构：National Ocean Technology CenterTianjin 300110China Shandong Provincial Key Laboratory of Ocean Engineering&College of EngineeringOcean University of ChinaQingdao 266100China 

出 版 物：《Journal of Ocean University of China》 (中国海洋大学学报（英文版）)

年 卷 期：2023年第22卷第6期

页      面：1473-1486页

核心收录：

学科分类：07[理学] 0707[理学-海洋科学] 08[工学] 081501[工学-水文学及水资源] 0815[工学-水利工程] 

基　　金：funded by the National Key Research and Development Program of China(No.2016YFC1401103) Funds for the Central Universities(No.202165003) the Open Fund of Shandong Province Key Laboratory of Ocean Engineering,Ocean University of China(No.kloe201903) 

主　　题：typhoon storm surge extreme sea level inundation 

摘      要：Coastal flooding caused by tropical cyclones has long been a major threat to life,property,and infrastructure in coastal *** study assessed the risk of flooding in Chittagong,southeastern Bangladesh,under extreme sea level scenarios caused by high astronomical tides and storm *** Jelesnianski typhoon model and the ADvanced CIRCulation hydrodynamic model were used to simulate 91 typhoons that occurred in the Bay of Bengal between 1981 and 2017,and observational data were used for model *** inundation model was based on a digital elevation model and a seed spread algorithm,and a geographical information system was used to visualize the flood *** four scenarios,the changes in flood levels caused by sea level rise had no signifi-cant influence on the extent of flooding in *** flood levels of 8.82m(50-year storm surge without sea level rise)and 8.89 m(50-year storm surge with sea level rise),the maximum estimated area of inundation was 11.35 km^(2).The western coastal and southeastern river coastal plain areas of Chittagong have the highest risk of inundation due to their low-lying *** flood levels of 9.83m(100-year storm surge without sea level rise)and 9.97m(100-year storm surge with sea level rise),the maximum simulated flood extent was 36.44km^(2).Simulated floodwaters propagated in a south–north direction,and most of the northern areas of the city are at risk of inundation under these scenarios.