LeHavreV1, PascalFrancis, Corpus, bibRecord, 000151

Modelling sand/mud transport and morphodynamics in the Seine river mouth (France) : an attempt using a process-based approach

Identifieur interne : 000151 ( PascalFrancis/Corpus ); précédent : 000150; suivant : 000152

Modelling sand/mud transport and morphodynamics in the Seine river mouth (France) : an attempt using a process-based approach

Auteurs : B. Waeles ; P. Le Hir ; P. Lesueur ; N. Delsinne

Source :

Hydrobiologia : (The Hague) [ 0018-8158 ] ; 2007.

RBID : Pascal:07-0428936

Descripteurs français

Pascal (Inist)
- Modélisation, Sable, Vase, Boue, Transport, France, Sédiment, Hydrobiologie, Milieu aquatique, Rivière Seine.

English descriptors

KwdEn :
- Aquatic environment, France, Hydrobiology, Modeling, Mud, Ooze, Sand, Sediments, Seine River, Transport.

Abstract

The mouth of the Seine River estuary (France) has undergone marked morphological evolution over several decades mainly due to engineering works aimed at improving access to Rouen and Le Havre harbours. The intertidal areas are decreasing in size and the lower estuary is accumulating sediment and prograding. In order to understand and better describe the major morphological behaviours of the estuary, a morphodynamic numerical model was developed within the Seine-Aval program. At the end of the 1st part of the research program, a validated fine sediment transport model (3D) was available (Le Hir et al., 2001b). As the present morphological study addresses medium-term issues (a few decades), and because of the need to investigate impacts of local structures or events, we chose to use the so-called "process-based approach" starting from the existing model. First, the existing model was upgraded to account for (suspended) sand transport, and to achieve coupling between morphological changes and sediment transport. Erodability of the sediment accounts for the respective proportions of mud and sand. Simulations starting from an arbitrary surficial sediment cover show that the model is able to reproduce realistic sediment patterns. For example, it is able to change the sediment nature on the intertidal flat near Le Havre from sand to mud. Observed structures of suspended sediment are also reproduced: fine particles mainly follow the turbidity maximum whereas significant concentrations of sand grains in suspension are found where the hydrodynamic stresses are intense. Concerning morphodynamics, simulations with real forcing over one year are discussed. The effect of waves on the bathymetric evolution of the mouth is shown and the sensitivity of morphodynamics to the coupling procedure is tested.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

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A09	`01`	`1`	`ENG`	`@1 Consequences of estuarine management of hydrodynamics and ecological functioning`
A11	`01`	`1`		`@1 WAELES (B.)`
A11	`02`	`1`		`@1 LE HIR (P.)`
A11	`03`	`1`		`@1 LESUEUR (P.)`
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A15	`03`			`@1 Department of Marine Biology, University of Groningen, P.O. Box 14 @2 9750 AA Haren @3 NLD @Z 3 aut.`
A18	`01`	`1`		`@1 Seine-Aval program @3 FRA @9 org-cong.`
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C01	`01`		`ENG`	@0 The mouth of the Seine River estuary (France) has undergone marked morphological evolution over several decades mainly due to engineering works aimed at improving access to Rouen and Le Havre harbours. The intertidal areas are decreasing in size and the lower estuary is accumulating sediment and prograding. In order to understand and better describe the major morphological behaviours of the estuary, a morphodynamic numerical model was developed within the Seine-Aval program. At the end of the 1st part of the research program, a validated fine sediment transport model (3D) was available (Le Hir et al., 2001b). As the present morphological study addresses medium-term issues (a few decades), and because of the need to investigate impacts of local structures or events, we chose to use the so-called "process-based approach" starting from the existing model. First, the existing model was upgraded to account for (suspended) sand transport, and to achieve coupling between morphological changes and sediment transport. Erodability of the sediment accounts for the respective proportions of mud and sand. Simulations starting from an arbitrary surficial sediment cover show that the model is able to reproduce realistic sediment patterns. For example, it is able to change the sediment nature on the intertidal flat near Le Havre from sand to mud. Observed structures of suspended sediment are also reproduced: fine particles mainly follow the turbidity maximum whereas significant concentrations of sand grains in suspension are found where the hydrodynamic stresses are intense. Concerning morphodynamics, simulations with real forcing over one year are discussed. The effect of waves on the bathymetric evolution of the mouth is shown and the sensitivity of morphodynamics to the coupling procedure is tested.
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C03	`06`	`X`	`SPA`	`@0 Francia @2 NG @5 06`
C03	`07`	`X`	`FRE`	`@0 Sédiment @5 07`
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C03	`07`	`X`	`SPA`	`@0 Sedimento @5 07`
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C03	`08`	`X`	`SPA`	`@0 Hidrobiología @5 08`
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C03	`09`	`X`	`SPA`	`@0 Medio acuático @5 09`
C03	`10`	`X`	`FRE`	`@0 Rivière Seine @4 CD @5 96`
C03	`10`	`X`	`ENG`	`@0 Seine River @4 CD @5 96`
C03	`10`	`X`	`SPA`	`@0 Río Sena @4 CD @5 96`
C07	`01`	`X`	`FRE`	`@0 Europe @2 NG`
C07	`01`	`X`	`ENG`	`@0 Europe @2 NG`
C07	`01`	`X`	`SPA`	`@0 Europa @2 NG`
N21				`@1 281`
N44	`01`			`@1 OTO`
N82				`@1 OTO`

A30	`01`	`1`	`ENG`	`@1 ECSA Symposium @2 38 @3 Rouen FRA @4 2004-09-13`

Format Inist (serveur)

NO :	PASCAL 07-0428936 INIST
ET :	Modelling sand/mud transport and morphodynamics in the Seine river mouth (France) : an attempt using a process-based approach
AU :	WAELES (B.); LE HIR (P.); LESUEUR (P.); DELSINNE (N.); LAFITE (Robert); GARNIER (Josette); DE JONGE (Victor N.)
AF :	IFREMER laboratoire, DYNECO/PHYSED Centre de Brest, BP 70/Plouzane 29280/France (1 aut., 2 aut.); Laboratoire de Morphodynamique Continentale et Côtière, Université de Caen/Caen/France (1 aut., 3 aut., 4 aut.); UMR 6143 M2C CNRS, UFR Sciences et techniques, université de Rouen/76821 Mont-Saint-Aignan/France (1 aut.); UMR Sisyphe 7619-CNRS & UPMC, Boîte 105, Tour 56, Etage 4, couloir 46/56, 4 place Jussieu/75005 Paris/France (2 aut.); Department of Marine Biology, University of Groningen, P.O. Box 14/9750 AA Haren/Pays-Bas (3 aut.)
DT :	Publication en série; Congrès; Niveau analytique
SO :	Hydrobiologia : (The Hague); ISSN 0018-8158; Coden HYDRB8; Pays-Bas; Da. 2007; Vol. 588; Pp. 69-82; Bibl. 1 p.
LA :	Anglais
EA :	The mouth of the Seine River estuary (France) has undergone marked morphological evolution over several decades mainly due to engineering works aimed at improving access to Rouen and Le Havre harbours. The intertidal areas are decreasing in size and the lower estuary is accumulating sediment and prograding. In order to understand and better describe the major morphological behaviours of the estuary, a morphodynamic numerical model was developed within the Seine-Aval program. At the end of the 1st part of the research program, a validated fine sediment transport model (3D) was available (Le Hir et al., 2001b). As the present morphological study addresses medium-term issues (a few decades), and because of the need to investigate impacts of local structures or events, we chose to use the so-called "process-based approach" starting from the existing model. First, the existing model was upgraded to account for (suspended) sand transport, and to achieve coupling between morphological changes and sediment transport. Erodability of the sediment accounts for the respective proportions of mud and sand. Simulations starting from an arbitrary surficial sediment cover show that the model is able to reproduce realistic sediment patterns. For example, it is able to change the sediment nature on the intertidal flat near Le Havre from sand to mud. Observed structures of suspended sediment are also reproduced: fine particles mainly follow the turbidity maximum whereas significant concentrations of sand grains in suspension are found where the hydrodynamic stresses are intense. Concerning morphodynamics, simulations with real forcing over one year are discussed. The effect of waves on the bathymetric evolution of the mouth is shown and the sensitivity of morphodynamics to the coupling procedure is tested.
CC :	002A14B04A; 002A14A02
FD :	Modélisation; Sable; Vase; Boue; Transport; France; Sédiment; Hydrobiologie; Milieu aquatique; Rivière Seine
FG :	Europe
ED :	Modeling; Sand; Ooze; Mud; Transport; France; Sediments; Hydrobiology; Aquatic environment; Seine River
EG :	Europe
SD :	Modelización; Arena; Fango; Lodo; Transporte; Francia; Sedimento; Hidrobiología; Medio acuático; Río Sena
LO :	INIST-5329.354000146648180060
ID :	07-0428936

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Pascal:07-0428936

Le document en format XML

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<front><div type="abstract" xml:lang="en">The mouth of the Seine River estuary (France) has undergone marked morphological evolution over several decades mainly due to engineering works aimed at improving access to Rouen and Le Havre harbours. The intertidal areas are decreasing in size and the lower estuary is accumulating sediment and prograding. In order to understand and better describe the major morphological behaviours of the estuary, a morphodynamic numerical model was developed within the Seine-Aval program. At the end of the 1st part of the research program, a validated fine sediment transport model (3D) was available (Le Hir et al., 2001b). As the present morphological study addresses medium-term issues (a few decades), and because of the need to investigate impacts of local structures or events, we chose to use the so-called "process-based approach" starting from the existing model. First, the existing model was upgraded to account for (suspended) sand transport, and to achieve coupling between morphological changes and sediment transport. Erodability of the sediment accounts for the respective proportions of mud and sand. Simulations starting from an arbitrary surficial sediment cover show that the model is able to reproduce realistic sediment patterns. For example, it is able to change the sediment nature on the intertidal flat near Le Havre from sand to mud. Observed structures of suspended sediment are also reproduced: fine particles mainly follow the turbidity maximum whereas significant concentrations of sand grains in suspension are found where the hydrodynamic stresses are intense. Concerning morphodynamics, simulations with real forcing over one year are discussed. The effect of waves on the bathymetric evolution of the mouth is shown and the sensitivity of morphodynamics to the coupling procedure is tested.</div>
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<fC01 i1="01" l="ENG"><s0>The mouth of the Seine River estuary (France) has undergone marked morphological evolution over several decades mainly due to engineering works aimed at improving access to Rouen and Le Havre harbours. The intertidal areas are decreasing in size and the lower estuary is accumulating sediment and prograding. In order to understand and better describe the major morphological behaviours of the estuary, a morphodynamic numerical model was developed within the Seine-Aval program. At the end of the 1st part of the research program, a validated fine sediment transport model (3D) was available (Le Hir et al., 2001b). As the present morphological study addresses medium-term issues (a few decades), and because of the need to investigate impacts of local structures or events, we chose to use the so-called "process-based approach" starting from the existing model. First, the existing model was upgraded to account for (suspended) sand transport, and to achieve coupling between morphological changes and sediment transport. Erodability of the sediment accounts for the respective proportions of mud and sand. Simulations starting from an arbitrary surficial sediment cover show that the model is able to reproduce realistic sediment patterns. For example, it is able to change the sediment nature on the intertidal flat near Le Havre from sand to mud. Observed structures of suspended sediment are also reproduced: fine particles mainly follow the turbidity maximum whereas significant concentrations of sand grains in suspension are found where the hydrodynamic stresses are intense. Concerning morphodynamics, simulations with real forcing over one year are discussed. The effect of waves on the bathymetric evolution of the mouth is shown and the sensitivity of morphodynamics to the coupling procedure is tested.</s0>
</fC01>
<fC02 i1="01" i2="X"><s0>002A14B04A</s0>
</fC02>
<fC02 i1="02" i2="X"><s0>002A14A02</s0>
</fC02>
<fC03 i1="01" i2="X" l="FRE"><s0>Modélisation</s0>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="X" l="ENG"><s0>Modeling</s0>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="X" l="SPA"><s0>Modelización</s0>
<s5>01</s5>
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<fC03 i1="02" i2="X" l="FRE"><s0>Sable</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="X" l="ENG"><s0>Sand</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="X" l="SPA"><s0>Arena</s0>
<s5>02</s5>
</fC03>
<fC03 i1="03" i2="X" l="FRE"><s0>Vase</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="X" l="ENG"><s0>Ooze</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="X" l="SPA"><s0>Fango</s0>
<s5>03</s5>
</fC03>
<fC03 i1="04" i2="X" l="FRE"><s0>Boue</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="X" l="ENG"><s0>Mud</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="X" l="SPA"><s0>Lodo</s0>
<s5>04</s5>
</fC03>
<fC03 i1="05" i2="X" l="FRE"><s0>Transport</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="X" l="ENG"><s0>Transport</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="X" l="SPA"><s0>Transporte</s0>
<s5>05</s5>
</fC03>
<fC03 i1="06" i2="X" l="FRE"><s0>France</s0>
<s2>NG</s2>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="X" l="ENG"><s0>France</s0>
<s2>NG</s2>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="X" l="SPA"><s0>Francia</s0>
<s2>NG</s2>
<s5>06</s5>
</fC03>
<fC03 i1="07" i2="X" l="FRE"><s0>Sédiment</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="X" l="ENG"><s0>Sediments</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="X" l="SPA"><s0>Sedimento</s0>
<s5>07</s5>
</fC03>
<fC03 i1="08" i2="X" l="FRE"><s0>Hydrobiologie</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="X" l="ENG"><s0>Hydrobiology</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="X" l="SPA"><s0>Hidrobiología</s0>
<s5>08</s5>
</fC03>
<fC03 i1="09" i2="X" l="FRE"><s0>Milieu aquatique</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="X" l="ENG"><s0>Aquatic environment</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="X" l="SPA"><s0>Medio acuático</s0>
<s5>09</s5>
</fC03>
<fC03 i1="10" i2="X" l="FRE"><s0>Rivière Seine</s0>
<s4>CD</s4>
<s5>96</s5>
</fC03>
<fC03 i1="10" i2="X" l="ENG"><s0>Seine River</s0>
<s4>CD</s4>
<s5>96</s5>
</fC03>
<fC03 i1="10" i2="X" l="SPA"><s0>Río Sena</s0>
<s4>CD</s4>
<s5>96</s5>
</fC03>
<fC07 i1="01" i2="X" l="FRE"><s0>Europe</s0>
<s2>NG</s2>
</fC07>
<fC07 i1="01" i2="X" l="ENG"><s0>Europe</s0>
<s2>NG</s2>
</fC07>
<fC07 i1="01" i2="X" l="SPA"><s0>Europa</s0>
<s2>NG</s2>
</fC07>
<fN21><s1>281</s1>
</fN21>
<fN44 i1="01"><s1>OTO</s1>
</fN44>
<fN82><s1>OTO</s1>
</fN82>
</pA>
<pR><fA30 i1="01" i2="1" l="ENG"><s1>ECSA Symposium</s1>
<s2>38</s2>
<s3>Rouen FRA</s3>
<s4>2004-09-13</s4>
</fA30>
</pR>
</standard>
<server><NO>PASCAL 07-0428936 INIST</NO>
<ET>Modelling sand/mud transport and morphodynamics in the Seine river mouth (France) : an attempt using a process-based approach</ET>
<AU>WAELES (B.); LE HIR (P.); LESUEUR (P.); DELSINNE (N.); LAFITE (Robert); GARNIER (Josette); DE JONGE (Victor N.)</AU>
<AF>IFREMER laboratoire, DYNECO/PHYSED Centre de Brest, BP 70/Plouzane 29280/France (1 aut., 2 aut.); Laboratoire de Morphodynamique Continentale et Côtière, Université de Caen/Caen/France (1 aut., 3 aut., 4 aut.); UMR 6143 M2C CNRS, UFR Sciences et techniques, université de Rouen/76821 Mont-Saint-Aignan/France (1 aut.); UMR Sisyphe 7619-CNRS & UPMC, Boîte 105, Tour 56, Etage 4, couloir 46/56, 4 place Jussieu/75005 Paris/France (2 aut.); Department of Marine Biology, University of Groningen, P.O. Box 14/9750 AA Haren/Pays-Bas (3 aut.)</AF>
<DT>Publication en série; Congrès; Niveau analytique</DT>
<SO>Hydrobiologia : (The Hague); ISSN 0018-8158; Coden HYDRB8; Pays-Bas; Da. 2007; Vol. 588; Pp. 69-82; Bibl. 1 p.</SO>
<LA>Anglais</LA>
<EA>The mouth of the Seine River estuary (France) has undergone marked morphological evolution over several decades mainly due to engineering works aimed at improving access to Rouen and Le Havre harbours. The intertidal areas are decreasing in size and the lower estuary is accumulating sediment and prograding. In order to understand and better describe the major morphological behaviours of the estuary, a morphodynamic numerical model was developed within the Seine-Aval program. At the end of the 1st part of the research program, a validated fine sediment transport model (3D) was available (Le Hir et al., 2001b). As the present morphological study addresses medium-term issues (a few decades), and because of the need to investigate impacts of local structures or events, we chose to use the so-called "process-based approach" starting from the existing model. First, the existing model was upgraded to account for (suspended) sand transport, and to achieve coupling between morphological changes and sediment transport. Erodability of the sediment accounts for the respective proportions of mud and sand. Simulations starting from an arbitrary surficial sediment cover show that the model is able to reproduce realistic sediment patterns. For example, it is able to change the sediment nature on the intertidal flat near Le Havre from sand to mud. Observed structures of suspended sediment are also reproduced: fine particles mainly follow the turbidity maximum whereas significant concentrations of sand grains in suspension are found where the hydrodynamic stresses are intense. Concerning morphodynamics, simulations with real forcing over one year are discussed. The effect of waves on the bathymetric evolution of the mouth is shown and the sensitivity of morphodynamics to the coupling procedure is tested.</EA>
<CC>002A14B04A; 002A14A02</CC>
<FD>Modélisation; Sable; Vase; Boue; Transport; France; Sédiment; Hydrobiologie; Milieu aquatique; Rivière Seine</FD>
<FG>Europe</FG>
<ED>Modeling; Sand; Ooze; Mud; Transport; France; Sediments; Hydrobiology; Aquatic environment; Seine River</ED>
<EG>Europe</EG>
<SD>Modelización; Arena; Fango; Lodo; Transporte; Francia; Sedimento; Hidrobiología; Medio acuático; Río Sena</SD>
<LO>INIST-5329.354000146648180060</LO>
<ID>07-0428936</ID>
</server>
</inist>
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Modelling sand/mud transport and morphodynamics in the Seine river mouth (France) : an attempt using a process-based approach

Modelling sand/mud transport and morphodynamics in the Seine river mouth (France) : an attempt using a process-based approach

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