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Interpreting sediment trap data in relation to the dominant sediment redistribution process in a lake

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Douglas, RW, Rippey, B and Gibson, CE (2002) Interpreting sediment trap data in relation to the dominant sediment redistribution process in a lake. ARCHIV FUR HYDROBIOLOGIE, 155 (4). pp. 529-539. [Journal article]

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Abstract

The total sedimentation rate (primary and secondary sedimentation) was measured in 5 lakes, using a time series sediment trap. The sediment trap had 12 sample bottles which were programmed to open at intervals from 3 to 12 hours, giving total deployment times from 36hrs to 6 days. The variation of total sedimentation rate during deployment in each lake was large, yet the mean total primary sedimentation rate for each lake was similar to annual primary sedimentation rates estimated by dated sediment cores taking into account the expected sediment redistribution process which causes secondary sedimentation. The results of this study emphasise the value of sediment traps for measuring the total sedimentation rate (and the secondary sedimentation rate, when the primary is known from sediment cores) when they are correctly designed and the data analysed in relation to the dominant sediment redistribution process in the lake. In many investigations, inaccuracies which sediment trap sedimentation rates have been associated with may not be due to any specific design flaw of the sediment trap. They may instead reflect the ability of the trap to measure the total sedimentation rate including specific short term events that are not represented in dated sediment cores.

Item Type:Journal article
Faculties and Schools:Faculty of Life and Health Sciences
Faculty of Life and Health Sciences > School of Environmental Sciences
Research Institutes and Groups:Environmental Sciences Research Institute
Environmental Sciences Research Institute > Freshwater Sciences
ID Code:12344
Deposited By:Dr Richard Douglas
Deposited On:09 Mar 2010 10:05
Last Modified:15 Jun 2011 11:16

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