Bedload Transport As An Indicator
Of Contemporary Transformations Of
Arctic Fluvial Systems
Author(s)
W. Kociuba, G. Janicki, K. Siwek & A. Gluza
Abstract
The article presents results of measurements of bedload transport rate, performed
during the ablation season 2010 in the gravel-bed Scott River catchment
(Svalbard). The study revealed temporal and spatial variability of bedload
transport rate. It varied from 0.04 10-2 to 1.45 g m−1 s−1 at individual
measurement sites. Channel-mean bedload transport rate (qa) amounted to
0.09 g m−1 s−1, and the mean value at individual sites varied from 0.004 to
0.16 g m−1 s−1 for a 24-hour interval. In the period analysed, the river discharged
a total of approx. 1834 kg of bedload, with mean daily bedload transport rate
(Qb) of approx. 63 kg day-1. The volume and rate of bedload transport were
dependent on hydrodynamic conditions and stream regime, directly related to
weather. Also the effect of Scott Glacier retreat on discharge rate was
emphasised, along with the indicative character of bedload transport rate. It
responds to changes in the tempo and magnitude of processes in a glacial
catchment quite rapidly, and therefore can be treated as a good indicator of
transformations occurring in the arctic zone.
Keywords: arctic fluvial system, the Scott River catchment, bedload transport
rate, Svalbard.
1 Introduction
Bedload transport rate can be an important indicator of contemporary
transformations of fluvial catchments of the arctic zone, along with thoroughly
researched indicators such as glacier mass balance [e.g. 1–4], water balance [5]
or thickness of active permafrost layer [e.g. 6–8]. Scarcity of papers on the
Keywords
arctic fluvial system, the Scott River catchment, bedload transport
rate, Svalbard.
Related Book
Other papers in this volume
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