Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/144246
Title: Evaluating pluvial flood hazard for highly urbanised cities : a case study of the Pearl River Delta region in China
Authors: Jian, Wei
Li, Shanshan
Lai, Chengguang
Wang, Zhaoli
Cheng, Xiangju
Lo, Edmond Yat-Man
Pan, Tso-Chien
Keywords: Science
Issue Date: 2020
Source: Jian, W., Li, S., Lai, C., Wang, Z., Cheng, X., Lo, E. Y.-M., & Pan, T.-C. (2020). Evaluating pluvial flood hazard for highly urbanised cities: a case study of the Pearl River Delta region in China. Natural Hazards, 67(10), 1603-1609. doi:10.1007/s11069-020-04372-3
Project: Sino-Singapore International Joint Research Institute (Project No. 205-A017020) 
National Key R&D Program of China (2018YFC1508200) 
Journal: Natural Hazards 
Abstract: Rapid urbanisation and economic growth in developing Asian countries have exacerbated their exposure to flood hazards, particularly evident in low-lying urban cities that are currently facing increasing risks from extreme precipitations, likely made worse by the impending climate change. We present a set of simplified indices representative of the characteristics of rainfall-runoff process for evaluating pluvial flood hazard using the fuzzy comprehensive evaluation method. The highly urbanised Pearl River Delta (PRD) region in southern China is studied as an example of mapping the regional pluvial flood hazard and assessing the socio-economic exposure at risk. The developed hazard map captures the broad patterns of high flood hazard zones when compared with reported surface water flooding hotspots and the PRD riverine flood map from the 2015 Global Assessment Report. Further analysis on the regional socio-economic profiles suggests that most PRD cities are faced with large flood loss potential, with estimates of approximate 23 million people and 2.4 trillion RMB Gross Domestic Product (GDP) exposed to high flood hazard. Mega cities Guangzhou and Shenzhen top the ranking with over 20% to 40% of their dense urban settlements in the high flood hazard zone. This highlights the impact of human activities on the natural surface runoff process, and the need for robust flood hazard assessment for better understanding and design of holistic solutions towards more adequate flood mitigation systems for continuous urbanisation and future climate conditions.
URI: https://hdl.handle.net/10356/144246
ISSN: 0921-030X
DOI: 10.1007/s11069-020-04372-3
Rights: © 2020 Springer Science+Business Media. This is a post-peer-review, pre-copyedit version of an article published in Natural Hazards. The final authenticated version is available online at http://dx.doi.org/10.1007/s11069-020-04372-3
Fulltext Permission: embargo_20211023
Fulltext Availability: With Fulltext
Appears in Collections:ICRM Journal Articles

Files in This Item:
File Description SizeFormat 
Evaluating pluvial flood hazard for highly urbanised cities (Authors Accepted Manuscript, 2020).pdf
  Until 2021-10-23
Author's Accepted Manuscript2.86 MBAdobe PDFUnder embargo until Oct 23, 2021

Page view(s)

25
Updated on Nov 30, 2020

Google ScholarTM

Check

Altmetric


Plumx

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.