<div class="csl-bib-body">
<div class="csl-entry">Zhang, X., Thorez, S., Barry, D. A., Lemmin, U., & Blanckaert, K. (2025, May 2). <i>Characteristics of turbidity current events in Lake Geneva, Switzerland</i> [Poster Presentation]. EGU General Assembly 2025, Wien, Austria. https://doi.org/10.34726/11899</div>
</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/226852
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dc.identifier.uri
https://doi.org/10.34726/11899
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dc.description.abstract
Turbidity currents represent a distinctive type of subaqueous density currents, characterized by a density excess that is due to the sediment load. Turbidity currents are important in lakes, reservoirs and oceans and have implications on hazard management, reservoir sedimentation and water quality. The existence of turbidity currents has been inferred in the 19th century from the existence of canyons on lake bottoms and in the 20th century from successive cable breaks of telecommunication cables on the ocean floor. From the 1990s on, Acoustic Doppler Current Profiler’s (ADCP) have allowed measuring vertical profiles of the velocity in turbidity currents. Most measurements were made in oceanic environments, however, and detailed measurements in lakes remain very scarce.
This study reports field measurements of turbidity currents in Lake Geneva, Switzerland, performed in 2016, 2017, 2018 and 2022. The measurements cover a broad range of control parameters and include an entire hydrological year. Additional data were obtained from simultaneous measurements with high-resolution thermistors in vertical profiles or along the lake bottom.
A total of twenty one turbidity current events were identified over the measurement period. For each event, characteristics such as the average and maximum flow velocity, the height, the duration and the dispatched volume of water were extracted from the ADCP velocity record. In addition, the suspended sediment concentration was estimated from the ADCP backscatter record and yielded estimations of the dispatched sediment volume.
The twenty one turbidity currents can essentially be separated in three classes: strong short-term events with velocities above 1 m s-1 that last up to approximately 24 hours, weak long-term events with velocities below 0.3 m s-1 that last several days, and weak short-term events with velocities below 1 m s-1 that last less than 12 hours.
en
dc.language.iso
en
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dc.rights.uri
http://rightsstatements.org/vocab/InC/1.0/
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dc.subject
Turbidity currents
en
dc.subject
ADCP
en
dc.subject
Lake Geneva
en
dc.title
Characteristics of turbidity current events in Lake Geneva, Switzerland
en
dc.type
Presentation
en
dc.type
Vortrag
de
dc.rights.license
Urheberrechtsschutz
de
dc.rights.license
In Copyright
en
dc.identifier.doi
10.34726/11899
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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.type.category
Poster Presentation
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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.linking
https://doi.org/10.5194/egusphere-egu25-9181
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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
-
tuw.author.orcid
0000-0002-6630-3683
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dc.rights.identifier
Urheberrechtsschutz
de
dc.rights.identifier
In Copyright
en
tuw.event.name
EGU General Assembly 2025
en
tuw.event.startdate
27-04-2025
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tuw.event.enddate
02-05-2025
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tuw.event.online
Hybrid
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tuw.event.type
Event for scientific audience
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tuw.event.place
Wien
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tuw.event.country
AT
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tuw.event.presenter
Zhang, Xiguo
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wb.sciencebranch
Bauingenieurwesen
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wb.sciencebranch
Umwelttechnik
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wb.sciencebranch
Hydrologie
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wb.sciencebranch.oefos
2011
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wb.sciencebranch.oefos
2071
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wb.sciencebranch.oefos
1053
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wb.sciencebranch.value
30
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wb.sciencebranch.value
20
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wb.sciencebranch.value
50
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item.fulltext
with Fulltext
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item.grantfulltext
open
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item.openairecristype
http://purl.org/coar/resource_type/c_18co
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item.cerifentitytype
Publications
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item.languageiso639-1
en
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item.openairetype
conference poster not in proceedings
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item.openaccessfulltext
Open Access
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item.mimetype
application/pdf
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crisitem.author.dept
E222-01 - Forschungsbereich Wasserbau
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crisitem.author.dept
E222-01 - Forschungsbereich Wasserbau
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crisitem.author.dept
École Polytechnique Fédérale de Lausanne
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crisitem.author.dept
École Polytechnique Fédérale de Lausanne
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crisitem.author.dept
E222-01 - Forschungsbereich Wasserbau
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crisitem.author.orcid
0000-0002-2282-2449
-
crisitem.author.orcid
0000-0001-8561-0665
-
crisitem.author.orcid
0000-0002-6630-3683
-
crisitem.author.parentorg
E222 - Institut für Wasserbau und Ingenieurhydrologie
-
crisitem.author.parentorg
E222 - Institut für Wasserbau und Ingenieurhydrologie
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crisitem.author.parentorg
E222 - Institut für Wasserbau und Ingenieurhydrologie
