<div class="csl-bib-body">
<div class="csl-entry">Thorez, S. A., Lemmin, U., Barry, D. A., & Blanckaert, K. (2023, October 12). <i>Hydro-sedimentary processes of a plunging hyperpycnal river plume revealed by synchronized remote imagery and gridded current measurements</i> [Conference Presentation]. Vienna Doctoral Programme on Water Resource Systems Annual Symposium 2023, Podersdorf, Austria. http://hdl.handle.net/20.500.12708/189753</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/189753
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dc.description.abstract
Most present conceptualizations of plunging river plumes are based on laterally confined laboratory experiments (representative of river-dammed reservoirs). Plunging in unconfined settings (typical for lakes) is understudied, especially in the field. Here, the dominant hydro-sedimentary processes of the Rhône River inflow into Lake Geneva were elucidated by synchronized time-lapse camera and boat-towed ADCP measurements. Hydrodynamic processes comply with laterally confined experiments in longitudinal direction. Contrarily, several hydrodynamic processes were measured for the first time in the lateral direction: lateral slumping due to excess density driving secondary flow cells, lateral convergence due to vertical divergence and a resulting sediment-rich triangle-shaped pattern at the surface near the inflow. An increase of the sediment concentration and flux in longitudinal direction indicates net sediment erosion under the investigated high discharge and sediment load conditions, suggesting transient storage of sediment under low discharge and sediment load conditions, and high morphological activity in the plunging area.
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dc.description.sponsorship
FWF Fonds zur Förderung der wissenschaftlichen Forschung (FWF)
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dc.language.iso
en
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dc.subject
Plunging
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dc.subject
Turbidity current
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dc.subject
Gravity current
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dc.subject
Sediment transport
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dc.subject
Entrainment
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dc.subject
Lake
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dc.subject
Reservoir
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dc.subject
Mixing processes
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dc.subject
Erosion
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dc.title
Hydro-sedimentary processes of a plunging hyperpycnal river plume revealed by synchronized remote imagery and gridded current measurements
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dc.type
Presentation
en
dc.type
Vortrag
de
dc.contributor.affiliation
École Polytechnique Fédérale de Lausanne, Switzerland
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dc.contributor.affiliation
École Polytechnique Fédérale de Lausanne, Switzerland
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dc.relation.grantno
I 6180-N
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dc.type.category
Conference Presentation
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tuw.project.title
Hyperpycnal sedimentladen river plumes in lakes
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tuw.researchTopic.id
E4
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tuw.researchTopic.name
Environmental Monitoring and Climate Adaptation
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tuw.researchTopic.value
100
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tuw.publication.orgunit
E222-01 - Forschungsbereich Wasserbau und Umwelthydraulik
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tuw.author.orcid
0000-0002-2282-2449
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tuw.author.orcid
0000-0001-8561-0665
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tuw.author.orcid
0000-0002-8621-0425
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tuw.author.orcid
0000-0002-6630-3683
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tuw.event.name
Vienna Doctoral Programme on Water Resource Systems Annual Symposium 2023
en
tuw.event.startdate
11-10-2023
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tuw.event.enddate
12-10-2023
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tuw.event.online
On Site
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tuw.event.type
Event for scientific audience
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tuw.event.place
Podersdorf
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tuw.event.country
AT
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tuw.event.institution
Vienna Doctoral Programme on Water Resource Systems
