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TitleA catalogue of potential natural oil seeps in the marine environment of Hudson Bay-Hudson Strait and Foxe Channel from 2015-2017 RADARSAT-2 imagery analysis
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AuthorBeauchemin, M; Tolszczuk-Leclerc, S; Decker, V; Muise, P; Khurshid, S K; Hennessy, D
SourceGeomatics Canada, Open File 44, 2018, 28 pages, https://doi.org/10.4095/308463
Year2018
PublisherNatural Resources Canada
Documentopen file
Lang.English
Mediaon-line; digital
File formatreadme
File formatpdf (Adobe® Reader®); rtf; dbf (ESRI® ArcExplorer(TM), ArcReader(TM)); shp (ESRI® ArcExplorer(TM), ArcReader(TM)); xml (ESRI® ArcExplorer(TM), ArcReader(TM))
ProvinceNorthern offshore region
NTS24N; 24O; 24P; 25; 33M; 33N; 34C; 34D; 34E; 34F; 34I; 34J; 34K; 34L; 34M; 34N; 34O; 34P; 36; 37A; 37B; 37C; 37D; 43M; 43N; 43O; 43P; 44; 45; 46; 47A; 47D; 54A; 54F; 54G; 54H; 54I; 54J; 54K; 54L; 54M; 54N; 54O; 54P; 55A; 55B; 55C; 55D; 55E; 55F; 55G; 55H; 55I; 55J; 55K; 55O; 55P; 56A
AreaHudson Bay; Hudson Strait; Foxe Channel; Foxe Basin
Lat/Long WENS -95.0000 -64.0000 70.0000 55.0000
Subjectsgeophysics; marine geology; fossil fuels; hydrocarbons; hydrocarbon potential; remote sensing; satellite imagery; radar methods; mapping techniques; oil slicks; oil seeps; marine environments; RADARSAT-2; algorithms; wind speed; chlorophyll-a; geographical information systems applications; data processing; Paleozoic; Devonian; Silurian; Ordovician
Illustrationslocation maps; flow diagrams; tables; satellite images
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Location
 
Natural Resources Canada Library - Ottawa (Earth Sciences)
 
ProgramMethodology, Remote Sensing Science
Released2018 07 27
AbstractWe report results from the analysis of Radarsat-2 images for the detection of suspected oil slicks in the marine environment of Hudson Bay/Strait and Foxe Channel. 1278 images were acquired during the falls of 2015, 2016 and 2017. The potential slick candidates were identified using two methods: visual interpretation and semi-automated interpretation. The visual method is similar to the ones described in Decker et al. (2013a, b). The semi-automated approach is based on a suite of algorithms designed to detect and characterize dark areas. Both methods make use of wind speed and chlorophyll-a data. A total number of 33 oil slicks candidates are reported with their locations and corresponding images. The ultimate goal of the multi-temporal aspect of the project was to look for persistence over time of seep candidates concentrated over a same region in order to assist in finding regions with a greater likelihood of oil seep origin. The current survey does not convincingly support the oil seep origin of any detected dark spot but may help future works focus on the few areas that show more dense occurrences of slick candidates.
Summary(Plain Language Summary, not published)
Offshore hydrocarbon seeps are sometimes known to occur in association with oil producing basins. There are known natural oil seeps in Canada's offshore basins, but they are relatively unstudied when compared to seeps from other areas around the world. In the Canadian Arctic, a limited number of systematic surveys (in the public domain) have been carried out for determining natural baselines of seeps or to assist with identifying prospective petroleum systems. This report presents results of an assessment using a particular type of satellite imagery -- Synthetic Aperture Radar (SAR). RADARSAT-2 SAR imagery was collected over a period of 3 summers to detect possible oil seeps in Hudson Bay/Strait and Foxe Channel. From the 1278 scenes analysed, 33 suspect targets have been identified. RADARSAT-2 SAR images and positions of the suspect targets are provided.
GEOSCAN ID308463