GEOSCAN Search Results: Fastlink


TitleGridded flood depth estimates from satellite-derived inundations
AuthorBryant, S; McGrath, HORCID logo; Boudreault, M
SourceNatural Hazards and Earth System Sciences vol. 22, issue 4, 2022 p. 1437-1450, Open Access
logo Open Access
Alt SeriesNatural Resources Canada, Contribution Series 20220080
PublisherEuropean Geosciences Union
Mediapaper; digital; on-line
File formatpdf
ProvinceNew Brunswick
Lat/Long WENS -72.0000 -64.0000 48.0000 44.0000
Subjectsenvironmental geology; satellite imagery; satellites; radar imagery; floods; flood potential
Illustrationsdiagrams; location maps; satellite imagery; tables; charts; plots
ProgramGeobase 2.0 High Resolution Data Exploitation
Released2022 04 21
AbstractCanada'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.
Summary(Plain Language Summary, not published)
Method to create flood depth raster using HRDEM and satellite derived flood extents

Date modified: