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TitleMapping water bodies using SAR imagery - an application over the Spiritwood valley aquifer, Manitoba
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AuthorLi, J; Wang, S
SourceGeomatics Canada, Open File 31, 2017, 13 pages, https://doi.org/10.4095/300213
Year2017
PublisherNatural Resources Canada
Documentopen file
Lang.English
Mediaon-line; digital
File formatpdf
ProvinceManitoba
NTS62G/03; 62G/04; 62G/05; 62G/06
AreaKillarney; Holmfield; Cartwright; North Dakota; Canada; United States
Lat/Long WENS-100.0000 -99.0000 49.5000 49.0000
Subjectshydrogeology; environmental geology; geophysics; remote sensing; satellite imagery; radar imagery; surface waters; lakes; resource management; ecosystems; climate; mapping techniques; Spiritwood Buried Valley; Spiritwood Valley Aquifer; Radarsat-2; synthetic aperture radar (SAR); climate change
Illustrationssatellite images; flow charts; histograms; tables
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Location
 
Natural Resources Canada Library - Ottawa (Earth Sciences)
 
ProgramAquifer Assessment & support to mapping, Groundwater Geoscience
ProgramRemote Sensing Science
Released2017 04 12
AbstractCanada has over 2 million lakes covering a total area of 0.9 million km2. The inland water bodies play a critical role in water cycles, water resources, social economic including fisheries and recreation. However, these inland aquatic ecosystems are under increasing pressure and big changes from increasing human activities and changing climate. To better understand the aquatic ecosystem dynamics and effectively manage the inland water bodies, it is essential to have up-to-date information of their spatial and temporal variability. Synthetic Aperture Radar (SAR), unlike optical sensors, is able to penetrate cloud, haze and smoke, and hence observe the earth's surface in all weather conditions day and night. SAR imagery is an effective method for mapping water bodies. This open file details the algorithms and their implementations for a novel method for mapping water bodies using SAR imageries. This method is completely automatic and less computational intensive, thus suitable for large-scale applications. A test of this method over the Spiritwood valley in Manitoba using Radarsat-2/SAR data shows a high accuracy in delineating water bodies. This study provides a tool for mapping national scale inland water bodies and monitoring their dynamic changes in a near-real time environment.
Summary(Plain Language Summary, not published)
The inland water bodies play a critical role in water resources and social economic. However they are under increasing pressure and big changes from increasing human activities and changing climate. To better understand the aquatic ecosystem dynamics and effectively manage the inland water bodies, it is essential to have up-to-date information of their variability. SAR, unlike optical sensors, can observe the earth's surface in all weather conditions day and night. SAR imagery is an effective method for mapping water bodies. This open file details the algorithms and their implementations for a novel method for mapping water bodies using SAR imageries. This method is completely automatic and less computational intensive, thus suitable for large scale applications. A test of this method over the Spritiwood valley in Manitoba using Radarsat-2/SAR data shows a high accuracy in mapping water bodies. This study provides a tool for mapping national scale inland water bodies and monitoring their dynamic changes in a near-real time environment.
GEOSCAN ID300213