Title: Measuring sediment fluxes in periglacial reservoirs using water samples, LISST and ADCP
Authors : Ehrbar, D.
Schmocker, L.
Vetsch, D.F.
Boes, R.M.
Döring, Michael
Proceedings: Proceedings of the 13th International Symposium on River Sedimentation, ISRS 2016, Stuttgart, Germany, 19-22 September 2016
Pages : 1118
Pages to: 1125
Conference details: 13th International Symposium on River Sedimentation, Stuttgart, Germany, 19-22 September 2016
Editors of the parent work: Wieprecht, Silke
Haun, Stefan
Weber, Karolin
Noack, Markus
Terheiden, Kristina
Publisher / Ed. Institution : CRC Press
Issue Date: 2017
License (according to publishing contract) : Licence according to publishing contract
Type of review: Peer review (Abstract)
Language : English
Subjects : ADP; Sediment; Hydropower
Subject (DDC) : 500: Natural sciences and mathematics
577: Ecology
Abstract: Climate change offers new perspectives for reservoirs near to the glacial environment. The reservoirs will benefit from increased water supply but are affected by increased sedimentation. Sediment transport was studied in Griessee. 61% of its catchment area is covered by glaciers. Particle size distribution (PSD) and suspended sediments concentration (SSC) were examined. Measurements were conducted with Niskin bottle sampler, laser in-situ scattering transmissometry (LISST) and acoustic Doppler current profiler (ADCP). They were compared with water samples. PSD and SSC show only minor fluctuations in the lake. The major part of the suspended sediments is silt, median diameters are between 5 and 10 μm. Average SSC is 80 mg/l. A minor turbidity current was detected with ADCP. LISST measurements were used for simultaneous measurement of PSD and SSC profiles. The combination of the three techniques was proven to be suitable for assessing sediment fluxes in periglacial reservoirs at high resolution.
Departement: Life Sciences und Facility Management
Organisational Unit: Institute of Natural Resource Sciences (IUNR)
Publication type: Conference Paper
ISBN: 978-1-138-02945-3
978-1-315-62320-7
URI: https://digitalcollection.zhaw.ch/handle/11475/8248
Appears in Collections:Publikationen Life Sciences und Facility Management

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