Gridded flood depth estimates from satellite-derived inundations
- Canada's RADARSAT missions improve the potential to study past flood events; however, existing tools to derive flood depths from this remote-sensing data do not correct for errors, leading to poor estimates. To provide more accurate gridded depth estimates of historical flooding, a new tool is proposed that integrates Height Above Nearest Drainage and Cost Allocation algorithms. This tool is tested against two trusted, hydraulically derived, gridded depths of recent floods in Canada. This validation shows the proposed tool outperforms existing tools and can provide more accurate estimates from minimal data without the need for complex physics-based models or expert judgement. With improvements in remote-sensing data, the tool proposed here can provide flood researchers and emergency managers accurate depths in near-real time.
Author details: | Seth BryantORCiD, Heather McGrath, Mathieu BoudreaultORCiDGND |
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DOI: | https://doi.org/10.5194/nhess-22-1437-2022 |
ISSN: | 1561-8633 |
ISSN: | 1684-9981 |
Title of parent work (English): | Natural hazards and earth system sciences |
Publisher: | European Geophysical Society |
Place of publishing: | Katlenburg-Lindau |
Publication type: | Article |
Language: | English |
Date of first publication: | 2022/04/21 |
Publication year: | 2022 |
Release date: | 2024/06/06 |
Volume: | 22 |
Issue: | 4 |
Number of pages: | 14 |
First page: | 1437 |
Last Page: | 1450 |
Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Umweltwissenschaften und Geographie |
DDC classification: | 5 Naturwissenschaften und Mathematik / 55 Geowissenschaften, Geologie / 550 Geowissenschaften |
Peer review: | Referiert |
Publishing method: | Open Access / Gold Open-Access |
DOAJ gelistet | |
License (German): | CC-BY - Namensnennung 4.0 International |