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TitleLe climat et les très grands feux à la Baie de James
DownloadDownload (whole publication)
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorArseneault, D; Erni, S; Héon, J; Bégin, Y
SourceUtilisation des archives naturelles pour la reconstitution du passé hydro-climatique; by Bégin, C; Nicault, A; Bégin, Y; Geological Survey of Canada, Open File 8768, 2021 p. 71-77, Open Access logo Open Access
PublisherNatural Resources Canada
Documentopen file
Mediaon-line; digital
RelatedThis publication is contained in Utilisation des archives naturelles pour la reconstitution du passé hydro-climatique
File formatpdf
NTS33C/11; 33C/14
AreaEeyou Istchee Baie-James; Rivière Broadback; Radisson; Complexe La Grande
Lat/Long WENS -77.5000 -77.0000 53.0000 52.5000
Subjectsenvironmental geology; hydrogeology; Nature and Environment; Science and Technology; Economics and Industry; Recent; climatology; paleoclimatology; hydrologic environment; energy resources; hydroelectric power; watersheds; paleoenvironment; mapping techniques; Le projet ARCHIVES; Methodology; Climate change; Hydrology; Boreal ecosystems; Forests; Forest fires; Infrastructures; Phanerozoic; Cenozoic; Quaternary
Illustrationslocation maps; sketch maps; photographs; profiles; time series; plots
ProgramClimate Change Geoscience Extreme Events
Released2021 06 28
AbstractThe James Bay area in northern Québec is characterised by frequent and large wildfires and is one of the most fire-prone regions of the entire North American boreal zone. This region also comprises several anthropogenic infrastructures, mostly related to the La Grande Hydroelectric Complex. Within the frame of the ARCHIVES project, we have developed a new approach in order to simultaneously reconstruct fire size and fire-free intervals of the last 200 years. Our objectives where: 1- to reconstruct fire size and identify large fire and severe drought years; 2- to verify whether or not the risk of burning and infrastructure vulnerability increase with fuel recovery and time since last fire. Our results reveal a fire regime shift at the beginning of the 20th century, from the absence of large fire year (1850-1915), to the regular recurrence of very large fire years (1915-2013). Following this shift, the probability of burning has increased with time since last fire, such that the risk of burning and infrastructure vulnerability would be quantifiable from maps of forest age.

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