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Observed run-off and suspended sediment dynamics from a minor glacierized basin in south-west Greenland

Observed run-off and suspended sediment dynamics from a minor glacierized basin in south-west Greenland
Observed run-off and suspended sediment dynamics from a minor glacierized basin in south-west Greenland
This study examined run-off and suspended sediment dynamics in a minor glacierized basin in south-west Greenland. A discharge (Q), turbidity (Tu) and air temperature (Tair) record was maintained for 26 days from 25 July 2009 to 19 August 2009 which was supplemented by 335 water samples analysed for suspended sediment concentration (SSC). Clear diurnal fluctuations in Tair, Q and SSC were observed. Mean Tair rose from 10.2 °C in a sunny clear Phase 1 (days 1–14) to 10.8 °C in a cloudy Phase 2 (days 15–25), mean Q increased from 3.4 m3/s in Phase 1 to 4.8 m3/s in Phase 2 and this significant increase in Q may be explained by fresh snowfall higher on the glaciers melting. Mean sampled SSC was 23 mg/l while mean predicted SSC increased from 34 mg/l in Phase 1 to 45 mg/l in Phase 2 and is assumed to be a direct result of the increased Q in Phase 2 entraining fine sediment from higher up channel banks and bars. The SSC, suspended sediment load and SSY estimated in this study are compared with a growing and updated database of sediment studies in Greenland (where data from sediment transport studies in 16 locations around Greenland are collated).
0016-7223
Stott, Tim
8f40cfc2-11f8-4752-969b-f0da43a6214e
Nuttall, Anne-Marie
10eb3347-7afb-42f1-8dc9-563ab301f6ed
Biggs, Eloise M.
f0afed06-18ac-4a4d-841c-36ea4ff8a3b4
Stott, Tim
8f40cfc2-11f8-4752-969b-f0da43a6214e
Nuttall, Anne-Marie
10eb3347-7afb-42f1-8dc9-563ab301f6ed
Biggs, Eloise M.
f0afed06-18ac-4a4d-841c-36ea4ff8a3b4

Stott, Tim, Nuttall, Anne-Marie and Biggs, Eloise M. (2014) Observed run-off and suspended sediment dynamics from a minor glacierized basin in south-west Greenland. Geografisk Tidsskrift-Danish Journal of Geography. (doi:10.1080/00167223.2013.862911).

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Abstract

This study examined run-off and suspended sediment dynamics in a minor glacierized basin in south-west Greenland. A discharge (Q), turbidity (Tu) and air temperature (Tair) record was maintained for 26 days from 25 July 2009 to 19 August 2009 which was supplemented by 335 water samples analysed for suspended sediment concentration (SSC). Clear diurnal fluctuations in Tair, Q and SSC were observed. Mean Tair rose from 10.2 °C in a sunny clear Phase 1 (days 1–14) to 10.8 °C in a cloudy Phase 2 (days 15–25), mean Q increased from 3.4 m3/s in Phase 1 to 4.8 m3/s in Phase 2 and this significant increase in Q may be explained by fresh snowfall higher on the glaciers melting. Mean sampled SSC was 23 mg/l while mean predicted SSC increased from 34 mg/l in Phase 1 to 45 mg/l in Phase 2 and is assumed to be a direct result of the increased Q in Phase 2 entraining fine sediment from higher up channel banks and bars. The SSC, suspended sediment load and SSY estimated in this study are compared with a growing and updated database of sediment studies in Greenland (where data from sediment transport studies in 16 locations around Greenland are collated).

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e-pub ahead of print date: 24 January 2014
Published date: January 2014
Organisations: Global Env Change & Earth Observation

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Local EPrints ID: 361677
URI: http://eprints.soton.ac.uk/id/eprint/361677
ISSN: 0016-7223
PURE UUID: fe41bc02-78ff-4a99-bc41-fcd02ac632d4

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Date deposited: 30 Jan 2014 11:05
Last modified: 14 Mar 2024 15:54

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Contributors

Author: Tim Stott
Author: Anne-Marie Nuttall
Author: Eloise M. Biggs

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