Role of landscape parameters in riverine run-off,and sediment and organic matter yield on Disko Island,West Greenland |
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| Authors: | Morten Rasch Niels Nielsen Christian Christiansen Thomas Balstrøm Robert Gilbert Joseph Desloges |
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| Institution: | 1. Institute of Geography, University of Copenhagen , ?ster Voldgade 10, DK-1350 , Copenhagen K. E-mail: mr@geogr.ku.dk nn@geogr.ku.dk cc@geogr.ku.dk tb@geogr.ku.dk;2. Department of Geography , Queen's University , Kingston , Ontario , Canada , K7L3N6 E-mail: gilbertr@qsilver.queensu.ca;3. Department of Geography , University of Toronto , Toronto , Ontario , Canada , M5S 3G3 E-mail: desloges@geog.utoronto.ca |
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| Abstract: | Measurements of discharge and suspended sediment and organic matter yield from nine different drainage basins on the island Disko in central West Greenland were carried out in the period 19–30 July 1997. A series of landscape properties (glacier cover, altitude, slope, aspect and vegetation cover) were measured for each drainage basin from a digital elevation model and a satellite image. Principal Component Analysis and regression statistics have been used to examine which landscape parameters dominate the measured discharges and yields. It is concluded that differences in suspended sediment and organic matter yield between the drainage basins can be explained by the measured morphometric properties while differences in water run-off can not. Glacier cover percentage and percent area above 800 m a.s.l. were the most important parameters influencing suspended sediment and organic matter yield in the drainage basins on Disko during the study period. |
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| Keywords: | Landscape discharge sediment transport multivariate statistics Disko Greenland |
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