Spatial and temporal variations of river-ice break-up, Mackenzie River Basin, Canada

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dc.contributor.authorDe Rham, Laurent Paul
dc.contributor.supervisorProwse, Terry Donald
dc.date.accessioned2009-08-26T15:36:11Z
dc.date.available2009-08-26T15:36:11Z
dc.date.copyright2006en
dc.date.issued2009-08-26T15:36:11Z
dc.degree.departmentDepartment of Geography
dc.degree.levelMaster of Science M.Sc.en
dc.description.abstractHydrological data extracted directly from Water Survey of Canada archives covering the 1913-2002 time period is used to assess river ice break-up in the Mackenzie River basin. A return-period analysis indicates that 13 (14) of 28 sites in the basin are dominated by peak water-levels occurring during the spring break-up (open-water) period. One location has a mixed signal. A map of flooding regimes is discussed in terms of physical, hydrological and climatic controls. Annual break-up is found to progress from south to north, over a period representing ~¼ of the year. Average annual duration is ~8 weeks. The at site break-up period, recognized as the most dynamic time of the year on cold-regions river systems is found to last from 4 days to 4 weeks. Break-up timing (1966-1995) is found to be occurring earlier in the western portions of the basin (~3 days/decade), concurrent with late 20th century warming.en
dc.identifier.urihttp://hdl.handle.net/1828/1609
dc.languageEnglisheng
dc.language.isoenen
dc.rightsAvailable to the World Wide Weben
dc.subjectSpring break-upen
dc.subjectReturn-period assessmenten
dc.subjectMackenzie River basinen
dc.subjectFloodingen
dc.subjectMann-Kendallen
dc.subjectclimate changeen
dc.subject.lcshUVic Subject Index::Humanities and Social Sciences::Social Sciences::Geographyen
dc.subject.lcshUVic Subject Index::Sciences and Engineering::Earth and Ocean Sciences::Hydrologyen
dc.subject.lcshUVic Subject Index::Sciences and Engineering::Earth and Ocean Sciences::Hydrologyen
dc.titleSpatial and temporal variations of river-ice break-up, Mackenzie River Basin, Canadaen
dc.typeThesisen

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