Changes in Sediment Sources following Wildfire in Mountainous Terrain: A Paired–Catchment Approach,British Columbia,Canada |
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| Authors: | Philip N Owens William H Blake Ellen L Petticrew |
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| Institution: | (1) National Soil Resources Institute, Cranfield University, North Wyke Research Station, Okehampton, Devon, EX20 2SB, UK;(2) School of Geography, University of Plymouth, Drake Circus, Plymouth, Devon, PL4 8AA, UK |
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| Abstract: | This paper describes a study examining the potential of mineral magnetic, geochemical and organic properties to determine
if a 2003 wildfire in a catchment in British Columbia, Canada, caused a change in the sources of the suspended sediment transported
in the channel relative to a nearby unburnt (reference) catchment. The results show that some of the properties offer the
potential to determine sediment sources in the unburnt catchment. However, the 2003 wildfire modified the concentrations of
some properties and this can either compromise or enhance their ability as tracers in the burnt catchment. At present, the
source tracing results are inconclusive. This has implications for the use of certain properties as fingerprints and raises
important issues about approaches to sediment source identification. |
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| Keywords: | sediment sources fingerprinting wildfire mineral magnetics geochemistry |
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