RCEM2017BACK TO ITALY10th Symposium on River,coastal and estuarine morphodynamicsTrento - PadovaSeptember 15 – 22, 2017

September 15 and 16 (Friday-Saturday)Pre-conference short courses in Trento

September 18 to 21 (Monday – Thursday)RCEM conference in Padova

Information and contactsrcem2017@unitn.it

PROGRAM

September 22 (Friday)Post-conference field trip on the braided Tagliamento River

Department of Civil, Environmentaland Mechanical Engineering

DIPARTIMENTO DI INGEGCIVILE,EDILE E AMBIENTDEPARTMENT OF CIVIL,AND ENVIRONMENTAL EDepartment of Civil, Environmental

and Mechanical Engineering

DIPARTIMENTO DI INGEGNERIACIVILE,EDILE E AMBIENTLEDEPARTMENT OF CIVIL, ARCHITECTURALAND ENVIRONMENTAL ENGINEERING

INDEX

1

Index

Organizing and scientific committees 2

Sponsorships & Partnerships 4

Maps 6

Pre-conference short courses 10

Timetable 11

Post-conference field trip 13

Oral session 14

Poster session 24

Poster list by first author 44

The University of Padova 47

Discovering Padova 51

ORGANIZING COMMITTEES

2

Organizing and scientific committees

Organizing Committee Co-Chairs

Stefano Lanzoni (University of Padova)

Guido Zolezzi (University of Trento)

Local organizing committee

Adami Luca (2)

Bertoldi Walter (2)

Bogoni Manuel (1)

Carniello Luca (1)

Chinellato Sara (4)

Crestani Elena (1)

D'Alpaos Andrea (3)

Defina Andrea (1)

Ghinassi Massimiliano (3)

Marani Marco (1)

Redolfi Marco (2)

Ruol Piero (1)

Sgarabotto Alessandro (1)

Surian Nicola (3)

Toffolon Marco (2)

Tubino Marco (2)

Viero Daniele Pietro (1)

Welber Matilde (2)

Zen Simone (2)

The Local organizing committee thanks the following contributors for the writing of the RCEM

program: Ferrazzi M. (1), Finottello A. (3), Lopez Dubon S. (1), Miniussi A. (1), Tommasini L. (3).

(1) Department of Civil, Environmental and Architectural Engineering, University of Padova, Italy.

(2) Department of Civil Environmental and Mechanical Engineering, University of Trento, Italy.

(3) Department of Geosciences, University of Padova, Italy.

(4) Communication and events Service, University of Trento, Italy.

ORGANIZING COMMITTEES

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Scientific committee/board

Allen Bateman (Universitat Politècnica de Catalunya)

Astrid Blom (Delft University of Technology)

Brad Murray (Duke University)

Carlos Alberto Vionnet (Universidad Nacional del Litoral & CONICET)

Daniel Calvete Manrique (Universitat Politècnica de Catalunya)

Giovanni Coco (University of Auckland)

Gary Parker (University of Illinois)

Huib de Swart (Utrecht University)

Gerardo M. E. Perillo (Universidad Nacional del Sur)

Jim Best (University of Illinois)

James Syvitski (University of Colorado Boulder)

Johan van de Koppel (Royal Netherlands Institute for Sea Research)

Jorge D. Abad (University of Pittsburgh)

Koen Blanckaert (École Polytechnique Fédérale de Lausanne)

Edgardo M. Latrubesse (University of Texas at Austin)

Marcelo Horacio Garcia (University of Illinois)

François Métivier (Institut de physique du globe de Paris)

Miwa Yokokawa (Institute of Technology, Osaka)

Nicholas Dodd (The University of Nottingham)

Stefano Lanzoni (University di Padova)

Susana Vinzón (COPPE/Federal University of Rio de Janeiro)

Ton Hoitink (Wageningen University & Research)

Vladimir Nikora (The University of Aberdeen)

Yasuyuki Shimizu (Hokkaido University)

Yarko Niño (Universidad de Chile)

Zhao-Yin Wang (Tsinghua University)

Guido Zolezzi (University di Trento)

ORAL SESSIONS

15

Bars and mixed sediment transport (Auditorium)

Chair: A. Blom & M. Redolfi

10.10 - 10.30

Morphodynamics of downstream fining in rivers with a unimodal sand-gravel feed Parker, G.

10.30 – 10.50

Gravel motion and channel evolution due to sand supply to gravel-beds: preliminary results Miwa, H., Yamada, K.

10.50 – 11.10

Dynamics of a fine and coarse sediment mixture using a medical CT scan Camenen, B., Perret, E., Brunelle, C.B., Francus, P., Des Roches, M., Daigle, L.F.

11.10 – 11.30

Stochastic bedload transport model in mountain streams Ancey, C., Bohorquez, P.

11.30 – 12.00 COFFEE BREAK

Chair: L. Adami & G.Stecca

12.00 – 12.20

Bedload transport and particle motion statistics: insights from direct numerical simulations and stochastic models Gonzalez, C., Richter, D.H., Bolster, D., Calantoni, J., Escauriaza, C.

12.20 – 12.40

Interaction of dunes and bars in lowland rivers de Ruijsscher, T.V., Naqshband, S., Hoitink, A.J.F.

12.40 – 13.00

Stratigraphic feedbacks on alternate bar morphology Brown, R.A., Nelson, P.A.

13.00 – 13.20

Influence of the graded sediment distribution and sediment supply on river bar patterns and dynamics Cordier, F., Tassi, P., Claude, N., Crosato, A., Rodrigues, S., Pham van Bang, D.

RCEM2017BACK TO ITALY10th Symposium on River,coastal and estuarine morphodynamicsTrento - PadovaSeptember 15 – 22, 2017

September 15 and 16 (Friday-Saturday)Pre-conference short courses in Trento

September 18 to 21 (Monday – Thursday)RCEM conference in Padova

Information and contactsrcem2017@unitn.it

PROGRAM

September 22 (Friday)Post-conference field trip on the braided Tagliamento River

Department of Civil, Environmentaland Mechanical Engineering

DIPARTIMENTO DI INGEGCIVILE,EDILE E AMBIENTDEPARTMENT OF CIVIL,AND ENVIRONMENTAL EDepartment of Civil, Environmental

and Mechanical Engineering

DIPARTIMENTO DI INGEGNERIACIVILE,EDILE E AMBIENTLEDEPARTMENT OF CIVIL, ARCHITECTURALAND ENVIRONMENTAL ENGINEERING

RCEM2017 BACK TO ITALY10th Symposium on River, coastal and estuarine morphodynamicsTrento - PadovaSeptember 15 – 22, 2017

Department of Civil, Environmentaland Mechanical Engineering

DIPARTIMENTO DI INGEGNERIA CIVILE, EDILE E AMBIENTALEDEPARTMENT OF CIVIL, ARCHITECTURAL AND ENVIRONMENTAL ENGINEERING

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RCEM 2017 - Back to Italy

The 10th Symposium on River, Coastal and

Estuarine Morphodynamics

Trento-Padova15-22 September 2017

Book of Abstracts

Edited by:

Stefano Lanzoni, Marco Redolfi

and Guido Zolezzi

All rights reserved. No part of this book may be reproduced in any form, by photostat, micro-form, retrieval system, or any other means, without prior written permission of the editors.Proceedings of the event RCEM2017 10th Symposium on River, Coastal and Estuarine Mor-phodynamics – Trento – Padova 15-22 September 2017/ editors Stefano Lanzoni, Marco Redolfiand Guido Zolezzi

ISBN: 978-88-8443-752-5© 2017 by RCEM2017 Organizing Commitee

II

RCEM 2017 - Back to ItalyThe 10th Symposium on River, Coastal and Estuarine Morphodynamics

Organizing Committee Co-Chairs

Stefano Lanzoni1

Guido Zolezzi2

Local organizing committee

Adami Luca2

Bertoldi Walter2

Carniello Luca1

Chinellato SaraCrestani Elena1

D’Alpaos Andrea3

Defina Andrea1

Ghinassi Massimiliano3

Marani Marco1

Redolfi Marco2

Ruol Piero1

Surian Nicola3

Toffolon Marco2

Tubino Marco2

Viero Daniele Pietro1

Welber Matilde2

Zen Simone2

1 Department of Civil, Environmental and Architectural Engineering, University of Padova,Italy2 Department of Civil Environmental and Mechanical Engineering, University of Trento, Italy3 Department of Geosciences, University of Padova, Italy4 Communication and Events Service, University of Trento, Italy

III

IV

INDEX

This index is organized as follows:

• first, abstract selected for oral contributions and keynotes are listed, following thechronological order of the conference presentations;

• afterwards, abstracts selected for poster presentations are listed, grouped by broadthematic areas, and in alphabetical order by first author within each thematic area.

The broad thematic areas are: “Coasts”, “Estuaries”, “Rivers”, “Tidal environments”.A complete list of all contributors to RCEM 2017 in alphabetical order is reported atthe end of the book.

ORAL PRESENTATIONS

Monday, 18 September

Keynote: Integrating models and data toward a comprehensive characteri-zation of hydro-eco-morpho-dynamics in a system of shallow coastal baysPatricia L. Wiberg 3

COASTAL MORPHODYNAMICS

Shoreline changes along the coast of the Sanquianga Natural Park, Colombian Pa-

cific Ocean

Cuervo G.V. and Castrillon C. 35

A Preliminary Investigation of Spit Dynamics at Pagham Harbour, UKTownend I.H., Scott C.R. and Warken N. 36

Laboratory experiments on the hysteresis of wave-generated ripplesJin C., Coco G. and Tinoco R.O. 37

Formation and destruction events of shoreline sand wavesArriaga J., Falques A. and Ribas F. 38

On sand waves and sandy moundsPorcile G., Blondeaux P. and Vittori G. 39

Vegetation impact on bed morphology: Laboratory studies on arrays of rigidcylinders on a sandy bed under combined flowsTinoco R.O. and Coco G. 40

Linear Stability Analysis of Bed Waves Formed by Turbidity Currents withthe Simple Mixing Length Turbulent ModelIzumi N. and Hagisawa S. 41

Coastal recovery: a numerical investigationLeonardi N., Li X. and Donatelli C. 42

V

BARS AND MIXED SEDIMENT TRANSPORT

Morphodynamics of Downstream Fining in Rivers with a Unimodal Sand-Gravel FeedSyvitski J.P., Cohen S. and Best J.L. 43

Gravel motion and channel evolution due to sand supply to gravel-beds:preliminary resultsMiwa H. and Yamada K. 44

Dynamics of a fine and coarse sediment mixture using a medical CT scanCamenen B., Perret E., Brunelle C.B., Francus P., Des Roches M. and Daigle L.F. 45

Stochastic bedload transport model in mountain streamsAncey C. and Bohorquez P. 46

Bedload Transport and Particle Motion Statistics: Insights from Direct Nu-merical Simulations and Stochastic ModelsGonzalez C., Richter D.H, Bolster D., Calantoni J. and Escauriaza C. 47

Interaction of dunes and bars in lowland riversde Ruijsscher T.V., Naqshband S. and Hoitink A.J.F. 48

Stratigraphic Feedbacks on Alternate Bar MorphologyBrown R.A. and Nelson P.A. 49

Influence of the graded sediment distribution and sediment supply on riverbar patterns and dynamicsCordier F., Tassi P., Claude N., Crosato A., Rodrigues S. and Pham van Bang D. 50

ESTUARIES

The shape of alluvial estuariesSavenije H.H.G. 51

Estuary scale experiments with saltmarsh vegetationLokhorst I.R., van Buiten G., de Lange S.I., Braat L., Leuven J.R.F.W.

and Kleinhans M.G. 52

Finescale turbulence within mangrove root systems: A comparison betweentropical and subtropical environmentsMullarney J.C., Horstman E.M., Bryan K.R., Norris B.K. and Henderson S.M. 53

Scaling of estuary biogeomorphodynamics in the Metronome tidal facilityKleinhans M.G., Braat L., Leuven J.R.F.W. and Lokhorst I.R. 54

Coupling Effects of Unsteady River Discharges and Wave Energy on MouthBar MorphodynamicsGao W., Shao D. and Wang Z.B. 55

VI

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Stochastic bedload transport model in mountain streams

C. Ancey1 and P. Bohorquez2

1 Environmental Hydraulics Laboratory, Ecole Polytechnique Fédérale de Lausanne, Lausanne 1015, Switzerland.christophe.ancey@epfl.ch

2 Área de Mecánica de Fluidos, Departamento de Ingeniería Mecánica y Minera, CEACTierra, Universidad de Jaén,Campus de las Lagunillas, 23071 Jaén, Spain. patricio.bohorquez@ujaen.es

1. IntroductionDescribing bedload transport as a stochastic process is anidea that emerged in the 1930s with the pioneering workof Einstein. For a long time, the stochastic approach at-tracted marginal attention, but the situation has radicallychanged over the last decade with the recent advances inthe theory of bedload transport and high-resolution mea-surements of sediment transport rates. This paper outlinesthe main achievements in our approach to bedload trans-port in mountain streams under low to moderate flow con-ditions.

2. Sediment transport as a stochastic processThe building block of our approach is an Eulerian de-scription of the number N of moving particles in a fixedvolume. An evolution equation for N can be derived us-ing the framework of birth death Markov process (Anceyet al., 2008). By generalizing this equation to an array ofadjacent volumes, we end up with a stochastic formula-tion of the mass balance equation for the bedload (Anceyand Heyman, 2014). The number of moving particles perunit streambed area is called “particle activity” γ . In ourapproach, γ is a random variable, which varies with timeas a result of entrainment, deposition, and transport. Un-der steady state conditions, the model is able to capturethe salient features of sediment transport (i.e., the proba-bility distribution function of transport rate, its autocorre-lation time) (Ancey et al., 2008). An ensemble-averagedequation can also be derived

∂tc+ up∂xc = λ −κc+D∂xxc

where c = 〈γ〉 is the ensemble-averaged particle activity,D particle diffusivity (which may include scale-dependentnonlocal effects), up particle velocity, and λ − κc is thenet result between entrainment and deposition (Ancey andHeyman, 2014; Ancey et al., 2015).

3. Coupling with the water streamThere is naturally a strong coupling between transportedsediment, bed morphology, and flow conditions, whichcan be described using the shallow water equations sup-plemented by the stochastic mass balance equation (thatcan be considered a stochastic Exner equation). We there-fore refer to the resulting system of equations as the Saint-Venant–Exner equations (SVEE) (Bohorquez and Ancey,2015, 2016).

4. Comparison with laboratory dataWe present laboratory applications on steep slope (Froudenumbers & 1) that are representative of conditions inmountain gravel-bed rivers. Well-controlled experimentsshow large fluctuations of the bedload transport rate un-der constant supply of water and sediment. Three theo-

retical or numerical problems have been studied to under-stand how the input parameters of the model affect themodel outputs: (i) the derivation of the stochastic evo-lution equation for the number of moving particles overfixed plane beds, which leads to exact analytical solu-tions of the particle activity fluctuation; (ii) the nonlinearsimulation of the ensemble-averaged SVEE, which suc-cessfully captures the anti-dune regime observed experi-mentally; (iii) the nonlinear simulation of the stochasticSVEE, which is considered a major challenge.

5. ConclusionsThe solution to the stochastic SVEE captures all the phys-ical phenomena observed experimentally. The chaoticfluctuations of the sediment transport rate reflect the com-plex interactions between stochastic fluctuations of parti-cle displacements and the nonuniform water flow result-ing from bed form development. The part played by par-ticle diffusion is also evaluated in our numerical simula-tions. Contrary to common belief (within the computa-tional hydraulics community), including diffusion (in thegoverning equation of c) improves the predictive capabil-ity of the model. In mountain streams, stochastic modelsperform thus better than deterministic approaches at cap-turing not only the average sediment transport rate, butalso its standard deviation and higher-order moments.

AcknowledgmentsP.B. was supported by Grant CGL2015-70736-R(MINECO/FEDER, UE).

ReferencesAncey, C., Bohorquez, P., and Heyman, J. (2015).

Stochastic interpretation of the advection diffusionequation and its relevance to bed load transport. J. Geo-

phys. Res:Earth Surf., 120:2529–2551.Ancey, C., Davison, A. C., Böhm, T., Jodeau, M., and

Frey, P. (2008). Entrainment and motion of coarse par-ticles in a shallow water stream down a steep slope. J.

Fluid Mech., 595:83–114.Ancey, C. and Heyman, J. (2014). A microstructural

approach to bed load transport: mean behaviour andfluctuations of particle transport rates. J. Fluid Mech.,744:129–168.

Bohorquez, P. and Ancey, C. (2015). Stochastic-deterministic modeling of bed load transport in shallowwaterflow over erodible slope: Linear stability analysisand numerical simulation. Adv. Water Resour., 83:36–54.

Bohorquez, P. and Ancey, C. (2016). Particle diffusion innon-equilibrium bedload transport simulations. Appl.

Math. Model., 40:7474–7492.

INDEX OF AUTHORS

Aalto, R. 255Abad, J.D. 59, 187, 219, 220, 255Abou-Habib, M. 177Adami, L. 147, 253Adduce, C. 97, 111Akiyama, Y. 148Alaeipour, A. 100Albernaz, M.B. 122Alexander J.S. 149Amaris, G. 123Amitrano, D. 222Ancey, C. 46, 169, 193Antoine, G. 150Antoniazza, G. 92Arkesteijn, L. 151Armanini, A. 152Arnez, K. 153Arriaga J. 38Arroyo-Gomez, M. 220Ashley, T. 161Ashmore, P. 172, 262Ashton, A. 29Ata, R. 59, 125Avila, H. 123Baar, A.W. 154Bakker, M. 92Balachandar, S. 109Bangen, S. 204Barbaro, G. 162Barkwith, A. 101Bascheck, B. 198Bateman, A. 124, 174Bau, V. 155Bayat, E. 251Bellafiore, D. 69Belliard, J.-P. 274Bendoni, M. 289Berezowsky, M. 156Berni, C. 157Bertagni, M.B. 80Bertin, X. 86, 278, 280Bertoldi, W. 81, 93, 147, 237Besio, G. 115Besmier, A.L. 200Best, J.L. 43, 73, 185Billi, P. 103Binh, D.V. 125

Blom, A. 94, 151, 158, 166, 178Blondeaux, P. 25, 39, 121Boelens, T. 57, 275Boes, R.M. 77, 245, 259Bogoni, D. 61Bogoni, M. 159, 271Bohorquez, P. 46Bolster, D. 47, 181Bombardier, J. 186Bouma, T.J. 13, 83, 129, 182, 294Braat, L. 52, 54, 122, 126, 127, 133Brasington, J. 5Briganti, R. 115Brivio, L. 281Brivois, O. 112Brocchini, M. 23Brown, R.A. 49, 230Brunelle, C.B. 45, 160Bryan, K.R. 53, 276Bryk, A.B. 60Bruckner, M.Z.M. 127Buckman, L. 114Buffet, A. 157Buscombe, D. 161, 183, 204Cabrera, J. 219Cainello, L. 58Calantoni, J. 47, 181Caleffi, V. 95Callaway, R.M. 283Calliari, B. 155Calvani, G. 78Calvete, D. 102, 104, 110Camenen, B. 45, 157, 160, 210, 254Camporeale, C. 80, 256, 257Canale, C. 162Candel, J.H.J. 163Canestrelli, A. 281Cantelli, A. 159Caponi, F. 77Carbonari, C. 168Cardot, R. 164, 224Carleo, L. 240Carlson, B. 67Carniello, L. 274, 281, 290, 293, 297Carraro, F. 95Carrillo R. 217Castellanos, B. 267

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Information and contacts

rcem2017@unitn.it

Under the patronage of:

http://events.unitn.it/en/rcem17

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