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dc.contributor.author
Zhao, K.
dc.contributor.author
Gong, Z.
dc.contributor.author
Xu, F.
dc.contributor.author
Zhou, Z.
dc.contributor.author
Zhang, C.K.
dc.contributor.author
Perillo, Gerardo Miguel E.
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dc.contributor.author
Coco, G.
dc.date.available
2020-03-16T21:07:51Z
dc.date.issued
2019-11
dc.identifier.citation
Zhao, K.; Gong, Z.; Xu, F.; Zhou, Z.; Zhang, C.K.; et al.; The Role of Collapsed Bank Soil on Tidal Channel Evolution: A Process-Based Model Involving Bank Collapse and Sediment Dynamics; American Geophysical Union; Water Resources Research; 55; 11; 11-2019; 9051-9071
dc.identifier.issn
0043-1397
dc.identifier.uri
http://hdl.handle.net/11336/99717
dc.description.abstract
We develop a process-based model to simulate the geomorphodynamic evolution of tidal channels, considering hydrodynamics, flow-induced bank erosion, gravity-induced bank collapse, and sediment dynamics. A stress-deformation analysis and the Mohr-Coulomb criterion, calibrated through previous laboratory experiments, are included in a model simulating bank collapse. Results show that collapsed bank soil plays a primary role in the dynamics of bank retreat. For bank collapse with small bank height, tensile failure in the middle of the bank (Stage I), tensile failure on the bank top (Stage II), and sectional cracking from bank top to the toe (Stage III) are present sequentially before bank collapse occurs. A significant linear relation is observed between bank height and the contribution of bank collapse to bank retreat. Contrary to flow-induced bank erosion, bank collapse prevents further widening since the collapsed bank soil protects the bank from direct bank erosion. The bank profile is linear or slightly convex, and the planimetric shape of tidal channels (gradually decreasing in width landward) is similar when approaching equilibrium, regardless of the consideration of bank erosion and collapse. Moreover, the simulated width-to-depth ratio in all runs is comparable with observations from the Venice Lagoon. This indicates that the equilibrium configuration of tidal channels depends on hydrodynamic conditions and sediment properties, while bank erosion and collapse greatly affect the transient behavior (before equilibrium) of the tidal channels. Overall, this contribution highlights the importance of collapsed bank soil in investigating tidal channel morphodynamics using a combined perspective of geotechnics and soil mechanics.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Geophysical Union
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
BANK COLLAPSE
dc.subject
COLLAPSED BANK SOIL
dc.subject
NUMERICAL MODELING
dc.subject
TIDAL CHANNELS
dc.subject.classification
Oceanografía, Hidrología, Recursos Hídricos
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
The Role of Collapsed Bank Soil on Tidal Channel Evolution: A Process-Based Model Involving Bank Collapse and Sediment Dynamics
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-02-26T19:31:06Z
dc.journal.volume
55
dc.journal.number
11
dc.journal.pagination
9051-9071
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
Washington DC
dc.description.fil
Fil: Zhao, K.. Hohai University; China
dc.description.fil
Fil: Gong, Z.. Hohai University; China
dc.description.fil
Fil: Xu, F.. East China Normal University; China
dc.description.fil
Fil: Zhou, Z.. Hohai University; China
dc.description.fil
Fil: Zhang, C.K.. Hohai University; China
dc.description.fil
Fil: Perillo, Gerardo Miguel E.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; Argentina
dc.description.fil
Fil: Coco, G.. University of Auckland; Nueva Zelanda
dc.journal.title
Water Resources Research
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1029/2019WR025514
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2019WR025514
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