Geospatial Approach to Assess Flash Flood Vulnerability in a Coastal District of Bangladesh: Integrating the Multifaceted Dimension of Vulnerabilities DOI Creative Commons
Sajib Sarker, Israt Jahan, Xin Wang

et al.

ISPRS International Journal of Geo-Information, Journal Year: 2025, Volume and Issue: 14(5), P. 194 - 194

Published: May 6, 2025

Flash floods pose a significant threat to Bangladesh; in particular, on 20 August 2024, the Feni district experienced major flash flood, affecting more than 550,000 people and causing widespread damage. To effectively mitigate impacts of floods, it is essential conduct comprehensive flood vulnerability assessment, incorporating multiple triggering factors. This study aims assess District through unique approach, integrating various dimensions vulnerability. The utilizes geospatial methodology, employing formula developed by UNESCO-IHE. Four were analyzed: social, physical, economic, environmental. For each dimension, specific variables selected exposure, susceptibility, resilience. Principal Component Analysis (PCA) was used assign weights these variables. layers influencing factors integrated together create maps four dimensions. These then overlaid generate composite map. analysis revealed distinct spatial distribution across District. In terms environmental due about 14% total area falls into very highly vulnerable zone, whereas 13%, 8% 5% found be regarding economic physical aspects, respectively. map identified key hotspots, with most unions (the smallest administrative unit Bangladesh) being Pourashava (68% high), Sonagazi Paurashava (40% Nawabpur (32% while least areas Jailashkara (58% low), Anandapur (81% Darbarpur (82% low). results show that District’s susceptibility varies significantly throughout region, which provide crucial insights for policymakers local authorities order identify prioritize interventions areas, enhance resilience, implement adaptive strategies.

Language: Английский

Geospatial Approach to Assess Flash Flood Vulnerability in a Coastal District of Bangladesh: Integrating the Multifaceted Dimension of Vulnerabilities DOI Creative Commons
Sajib Sarker, Israt Jahan, Xin Wang

et al.

ISPRS International Journal of Geo-Information, Journal Year: 2025, Volume and Issue: 14(5), P. 194 - 194

Published: May 6, 2025

Flash floods pose a significant threat to Bangladesh; in particular, on 20 August 2024, the Feni district experienced major flash flood, affecting more than 550,000 people and causing widespread damage. To effectively mitigate impacts of floods, it is essential conduct comprehensive flood vulnerability assessment, incorporating multiple triggering factors. This study aims assess District through unique approach, integrating various dimensions vulnerability. The utilizes geospatial methodology, employing formula developed by UNESCO-IHE. Four were analyzed: social, physical, economic, environmental. For each dimension, specific variables selected exposure, susceptibility, resilience. Principal Component Analysis (PCA) was used assign weights these variables. layers influencing factors integrated together create maps four dimensions. These then overlaid generate composite map. analysis revealed distinct spatial distribution across District. In terms environmental due about 14% total area falls into very highly vulnerable zone, whereas 13%, 8% 5% found be regarding economic physical aspects, respectively. map identified key hotspots, with most unions (the smallest administrative unit Bangladesh) being Pourashava (68% high), Sonagazi Paurashava (40% Nawabpur (32% while least areas Jailashkara (58% low), Anandapur (81% Darbarpur (82% low). results show that District’s susceptibility varies significantly throughout region, which provide crucial insights for policymakers local authorities order identify prioritize interventions areas, enhance resilience, implement adaptive strategies.

Language: Английский

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