Transport and deposition of fine sediment in a channel partly covered by flexible vegetation

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en Box, Walter Västilä, Kaisa Järvelä, Juha 2018-10-16T08:56:35Z 2018-10-16T08:56:35Z 2018-09-05
dc.identifier.citation Box , W , Västilä , K & Järvelä , J 2018 , ' Transport and deposition of fine sediment in a channel partly covered by flexible vegetation ' E3S Web of Conferences , vol 40 , 02016 . DOI: 10.1051/e3sconf/20184002016 en
dc.identifier.issn 2100-014X
dc.identifier.other PURE UUID: ca20a6fc-f0be-47fc-ab5c-5c836def4e53
dc.identifier.other PURE ITEMURL:
dc.identifier.other PURE LINK:
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dc.description.abstract Riparian plants exert flow resistance and largely influence the flow structure, which affects erosion, deposition and transport processes of fine sediments. Predicting these vegetative effects is important for flood, sediment and nutrient management. However, predictions on the fate of sediments are complicated by uncertainties associated with the suitable parameterization of natural plants and the associated effects on the turbulent flow field and on the variables in the transport equations. The aim of this study is to quantify deposition and transport of fine sandy sediment in a partly vegetated channel under laboratory conditions. Care was taken to reproduce conditions typical of vegetated floodplain flows including dense flexible grassy understory as a starting point. The experiments were conducted in a flume that is specifically designed to recirculate fine sediment. We measured suspended sediment concentrations with optical turbidity sensors and determined patterns of net deposition over the vegetated parts of the cross section. The flow field was determined with acoustic Doppler velocimetry. Our investigations are intended to improve future predictions of fine sediment storage and transport in natural or constructed vegetated channels, and the first results reported herein were useful in designing further, on-going experiments with complex combinations of vegetation and channel geometry. Key words: sediment transport, suspended sediment, deposition, riparian vegetation, flow field. en
dc.format.extent 8
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries E3S Web of Conferences en
dc.relation.ispartofseries Volume 40 en
dc.rights openAccess en
dc.subject.other Environmental Science(all) en
dc.subject.other Energy(all) en
dc.subject.other Earth and Planetary Sciences(all) en
dc.subject.other 218 Environmental engineering en
dc.title Transport and deposition of fine sediment in a channel partly covered by flexible vegetation en
dc.type Conference article fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Built Environment
dc.subject.keyword sediment transport
dc.subject.keyword suspended sediment
dc.subject.keyword deposition
dc.subject.keyword riparian vegetation
dc.subject.keyword flow field
dc.subject.keyword Environmental Science(all)
dc.subject.keyword Energy(all)
dc.subject.keyword Earth and Planetary Sciences(all)
dc.subject.keyword 218 Environmental engineering
dc.identifier.urn URN:NBN:fi:aalto-201810165396
dc.identifier.doi 10.1051/e3sconf/20184002016
dc.type.version publishedVersion

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