Dr Laurent Amoudry

Group: 
Marine Physics and Ocean Climate
Email: 
laou@noc.ac.uk
Location: 
Liverpool
Telephone: 
+44 (0)151 795 4914

 

I am a senior scientist at the National Oceanography Centre, where I lead the Coastal Ocean Processes team (8 permanent scientists, 4 PDRAs, and 8PhD students). I am a coastal scientist with broad interest in obtaining better integrated predictive systems for coastal oceans under climate and anthropogenic changes. My research focuses on coastal, estuarine, and shelf sea dynamics, in particular in relation to mixing, turbulence, and sediment transport.

My expertise primarily lies in process-based modelling of physical processes and a key part of my research involves the development and use of several numerical models targeted at different spatio-temporal scales.

Some more detailed topics of interest include:

  • coastal and estuarine hydrodynamics
  • coastal and estuarine sediment transport, suspended particulate dynamics, flocculation, sediment-turbulence interaction
  • bottom boundary layer processes, bedload, sediment resuspension
  • turbulence and mixing in coastal waters
  • multiphase approaches for geophysical sediment transport applications
  • fluxes at the sediment-water interface

Current research projects

The aim of the programme is to reduce the uncertainty in our understanding of nutrient and carbon cycling within the shelf seas, and of their overall role in global biogeochemical cycles. The programme will also provide effective policy advice and make a significant contribution to the Living With Environmental Change programme.

I am involved in the benthic and in the modelling work packages.

Biogeochemistry, macronutrient and carbon cycling in the benthic layer: This project is a consortium of leading scientists that includes microbiologists, ecologists, physical oceanographers, biogeochemists, mathematical modellers and policy advisors. With assistance from organisations like CEFAS, Marine Scotland and AFBI, they will carry out a series of research cruises around the UK that will map the sensitivity and status of seabed habitats based on their physical condition, the microbial and faunal communities that inhabit them, and the size and dynamics of the nitrogen and carbon pools found there.

Integrative Modelling for Shelf Seas Biogeochemistry: The overarching scientific goal is to enhance our capacity to assess the controls on biogeochemical cycling and hence to quantify with uncertainties the budgets of carbon, nitrogen, phosphorous and silicon including their response to climate, natural variability and anthropogenic stress. The underpinning strategic goal is to develop a new shelf seas biogeochemical model system, coupled to a state of the art physical model, capable of predicting regional impacts of environmental change from days to decades. We will establish a new common model version for the European Regional Seas Ecosystem Model (ERSEM), drawing from the combined expertise of the partners.

Past projects

  • Interactions of flow, tidal stream turbines and local sediment bed under combined waves and tidal conditions (INSTRON)

Computational and laboratory modelling studies will be carried out (i) to investigate the fundamental processes controlling the complex flow-TST-sediment interactions and (ii) to improve practical prediction methods that can be used not only by engineers in full-scale TST planning and design but also by regulatory authorities monitoring environmental and ecological consequences of installing TST arrays. The research will take a systematic, multidisciplinary, evidence-based approach involving analysis, physical model experiments and numerical modelling components to address and delineate the key processes affecting the sea bed response to TST placements in coastal waters

The iCOASST project will help forecast what the UK’s coastline will look like in the future, up to 100 years’ time.

This four-year project brings together a number of UK universities, research laboratories and leading consultants, to develop new methods that will characterise and forecast long-term changes to coastal sediment systems. This work is funded by the Natural Environment Research Council (NERC) and is partnered by the Environment Agency (EA), who will use these methods to improve long-term flood and erosion risk management.

I am involved in the process-based modelling component of the project.

  • Multi-dimensional Intra-wave Modelling of coupled Sediment transport and Turbulence

In this project, we will combine existing high-quality experimental data with state-of-the-art modelling approaches in order to assess and improve the current representation of near-bed turbulence and sediment transport over rippled beds in coastal-scale models.

Background

I joined the then Proudman Oceanographic Laboratory in January 2008 as a sediment dynamicist, I was promoted to senior scientist in 2012 and I have been leading the Coastal Ocean Processes subgroup since 2014. Prior to this, I obtained a PhD in Civil and Environmental Engineering from Cornell University (Jan. 2008), working on two-phase modelling of granular sediment for sheet flow and scour. I also obtained a dual Master of Engineering in Mechanical Engineering from Cornell University and Ecole Centrale de Lyon in 2001.

A few recent publications,

Amoudry, L.O., P.D. Thorne, A.J. Souza, and P.L.-F. Liu (2016) Parameterization of intrawave sediment pickup above steep ripples, J. Geophys. Res. Oceans, 121, 658-673, doi: 10.1002/2015JC011185

Brown, Jennifer; Amoudry, Laurent; Souza, Alejandro; Rees, Jon. 2015 Fate and pathways of dredged estuarine sediment spoil in response to variable sediment size and baroclinic coastal circulation. Journal of Environmental Management, 149. 209-221. 10.1016/j.jenvman.2014.10.017.

Amoudry, Laurent; Ramirez-Mendoza, Rafael; Souza, Alejandro; Brown, Jennifer. 2014 Modelling-based assessment of suspended sediment dynamics in a hypertidal estuarine channel. Ocean Dynamics, 64 (5). 707-722. 10.1007/s10236-014-0695-8

Ramirez-Mendoza, Rafael; Souza, Alejandro; Amoudry, Laurent. 2014 Modeling flocculation in a hypertidal estuary. Ocean Dynamics, 64 (2). 301-313. 10.1007/s10236-013-0675-4

Amoudry, Laurent; Bell, Paul; Thorne, Peter; Souza, Alejandro. 2013 Toward representing wave-induced sediment suspension over sand ripples in RANS models. Journal of Geophysical Research: Oceans, 118 (5). 2378-2392. 10.1002/jgrc.20188

Other publications can be found on the NERC Open Research Archive.

and some earlier work

Amoudry, L.O.; Liu, P. L.-F.. 2009 Two-dimensional, two-phase granular sediment transport model with applications to scouring downstream of an apron. Coastal Engineering, 56 (7). 693-702. 10.1016/j.coastaleng.2009.01.006

Amoudry, L.; Hsu, T.-J.; Liu, P. L.-F.. 2008 Two-phase model for sand transport in sheet flow regime. Journal of Geophysical Research, 113 (C3). C03011. 10.1029/2007JC004179

Amoudry, L.; Hsu, T.-J.; Liu, P. L.-F. 2005 Schmidt number and near?bed boundary condition effects on a two?phase dilute sediment transport model, Journal of Geophysical Research, 110 (C9), 10.1029/2004JC002798

Publications

Article

Li, Xiaorong; Li, Ming; McLelland, Stuart; Jordan, Laura-Beth; Amoudry, Laurent; Ramirez Mendoza, Rafael; Thorne, Peter. 2017 Modelling tidal stream turbines in a three-dimensional wave-current fully coupled oceanographic model. Renewable Energy, 114 (A). 297-307.10.1016/j.renene.2017.02.033
Thompson, C.E.L.; Silburn, B.; Williams, M.E.; Hull, T.; Sivyer, D.; Amoudry, L.O.; Widdicombe, S.; Ingels, J.; Carnovale, G.; McNeill, C.L.; Hale, R.; Laguionie Marchais, C.; Hicks, N.; Smith, H.E.K.; Klar, J.K.; Hiddink, J.G.; Kowalik, J.; Kitidis, V.; Reynolds, S.; Woodward, E.M.S.; Tait, K.; Homoky, W.B.; Kröger, S.; Bolam, S.; Godbold, J.A.; Aldridge, J.; Mayor, D.J.; Benoist, N.M.A.; Bett, B.J.; Morris, K.J.; Parker, E.R.; Ruhl, H.A.; Statham, P.J.; Solan, M.. 2017 An approach for the identification of exemplar sites for scaling up targeted field observations of benthic biogeochemistry in heterogeneous environments. Biogeochemisry, 135 (1-2). 1-34.10.1007/s10533-017-0366-1
Aldridge, J.N.; Lessin, G.; Amoudry, L.O.; Hicks, N.; Hull, T.; Klar, J.K.; Kitidis, V.; McNeill, C.L.; Ingels, J.; Parker, E.R.; Silburn, B.; Silva, T.; Sivyer, D.B.; Smith, H.E.K.; Widdicombe, S.; Woodward, E.M.S.; van der Molen, J.; Garcia, L.; Kroger, S.. 2017 Comparing benthic biogeochemistry at a sandy and a muddy site in the Celtic Sea using a model and observations. Biogeochemistry, 135. 155-182.10.1007/s10533-017-0367-0
Amoudry, L.O.; Souza, A.J.; Thorne, P.D.; Liu, P.L.-F.. 2016 Parameterization of intrawave ripple-averaged sediment pickup above steep ripples. Journal of Geophysical Research: Oceans, 121 (1). 658-673.10.1002/2015JC011185
Brown, Jennifer; Norman, Danielle; Amoudry, Laurent; Souza, Alejandro. 2016 Impact of operational model nesting approaches and inherent errors for coastal simulations [in special issue: Coastal ocean modelling] Ocean Modelling, 107. 48-63.10.1016/j.ocemod.2016.10.005
Ramirez Mendoza, Rafael; Souza, Alejandro; Amoudry, Laurent; Plater, Andrew. 2016 Effective energy controls on flocculation under various wave-current regimes. Marine Geology, 382. 136-150.10.1016/j.margeo.2016.10.006
Brown, Jennifer; Amoudry, Laurent; Souza, Alejandro; Rees, Jon. 2015 Fate and pathways of dredged estuarine sediment spoil in response to variable sediment size and baroclinic coastal circulation. Journal of Environmental Management, 149. 209-221.10.1016/j.jenvman.2014.10.017.
Amoudry, Laurent; Ramirez-Mendoza, Rafael; Souza, Alejandro; Brown, Jennifer. 2014 Modelling-based assessment of suspended sediment dynamics in a hypertidal estuarine channel. Ocean Dynamics, 64 (5). 707-722.10.1007/s10236-014-0695-8
Ramirez-Mendoza, Rafael; Souza, Alejandro; Amoudry, Laurent. 2014 Modeling flocculation in a hypertidal estuary. Ocean Dynamics, 64 (2). 301-313.10.1007/s10236-013-0675-4
Brown, Jennifer; Amoudry, Laurent; Francois , Merciera; Souza, Alejandro. 2013 Intercomparison of the Charnock and COARE bulk wind stress formulations for coastal ocean modelling. Ocean Science, 9. 721-729.10.5194/os-9-721-2013
Brown, J.M.; Amoudry, L.O.; Mercier, F.M.; Souza, A.J. 2013 Intercomparison of the Charnock and CORE bulk wind stress formulations for coastal ocean modelling. Ocean Science, 9 (4). 721-729.10.5194/os-9-721-2013
Bolanos-Sanchez, Rodolfo; Brown, Jennifer M.; Amoudry, Laurent O.; Souza, Alejandro J.. 2013 Tidal, Riverine, and Wind Influences on the Circulation of a Macrotidal Estuary. Journal of Physical Oceanography, 43 (1). 29-50.10.1175/JPO-D-11-0156.1
Amoudry, Laurent; Bell, Paul; Thorne, Peter; Souza, Alejandro. 2013 Toward representing wave-induced sediment suspension over sand ripples in RANS models. Journal of Geophysical Research: Oceans, 118 (5). 2378-2392.10.1002/jgrc.20188
Amoudry, Laurent O.. 2012 Assessing sediment stress closures in two-phase sheet flow models. Advances in Water Resources, 48. 92-101.10.1016/j.advwatres.2012.03.011
Bolanos, Rodolfo; Amoudry, Laurent O.; Doyle, Ken. 2011 Effects of instrumented bottom tripods on process measurements. Journal of Atmospheric and Oceanic Technology, 28 (6). 827-837.10.1175/2010JTECHO816.1
Bolanos, Rodolfo; Amoudry, Laurent O.; Doyle, Ken. 2011 Effects of instrumented bottom tripods on process measurements (vol 28, p. 827, 2011, Corrigendum). Journal of Atmospheric and Oceanic Technology, 28 (10). p1361.10.1175/JTECH-D-11-00125.1
Amoudry, Laurent O.; Souza, Alejandro J.. 2011 Impact of sediment-induced stratification and turbulence closures on sediment transport and morphological modelling. Continental Shelf Research, 31 (9). 912-928.10.1016/j.csr.2011.02.014
Amoudry, Laurent O.; Souza, Alejandro J.. 2011 Deterministic coastal morphological and sediment transport modeling: a review and discussion. Reviews of Geophysics, 49. RG2002.10.1029/2010RG000341
Souza, Alejandro J.; Bell, Paul S.; Amoudry, Laurent. 2010 Working toward a common strategy for U.K. sediment transport research. EOS: Transactions American Geophysical Union, 91 (5). 45-46.10.1029/2010EO050007
Amoudry, Laurent O; Liu, Philip L.-F. 2010 Parameterization of near-bed processes under collinear wave and current flows from a two-phase sheet flow model. Continental Shelf Research, 30 (13). 1403-1416.10.1016/j.csr.2010.04.009
Amoudry, L.; Hsu, T.-J.; Liu, P. L.-F.. 2008 Two-phase model for sand transport in sheet flow regime. Journal of Geophysical Research, 113 (C3). C03011.10.1029/2007JC004179

Monograph

Balfour, C.; Williams, M.; Cooke, R.; Amoudry, L.; Souza, A.. 2015 NOC Liverpool report for the miniSTABLE benthic lander deployments as part of the UK-SSB research programme. Southampton, National Oceanography Centre, 71pp. (National Oceanography Centre Research and Consultancy Report, 53)
Norman, D.L.; Brown, J.M.; Amoudry, L.O.; Souza, A.J.. 2014 Investigation of the Liverpool Bay mixing front using POLCOMS. Southampton, National Oceanography Centre, 38pp. (National Oceanography Centre Internal Document, No. 11)
Norman, D.L.; Brown, J.M.; Amoudry, L.O.; Souza, A.J.. 2014 Processes controlling stratification in Liverpool Bay. Southampton, National Oceanography Centre, 18pp. (National Oceanography Centre Internal Document, No. 10)
Norman, D.L.; Brown, J.M.; Amoudry, L.O.; Souza, A.J.. 2014 Was 2008 a typical year in Liverpool Bay? Southampton, National Oceanography Centre, 19pp. (National Oceanography Centre Internal Document, No. 09)
Norman, D.L.; Brown, J.M.; Amoudry, L.O.; Souza, A.J.. 2014 POLCOMS sensitivity analysis to river temperature proxies, surface salinity flux and river salinity in the Irish Sea. Southampton, National Oceanography Centre, 22pp. (National Oceanography Centre Internal Document, No. 08)
Brown, J.M.; Amoudry, L.O.; Souza, A.J.; Rees, J.. 2013 Particle tracking study in the Mersey Estuary. Southampton, National Oceanography Centre, 34pp. (National Oceanography Centre Research and Consultancy Report, 40)
Amoudry, Laurent. 2008 A review on coastal sediment transport modelling. Liverpool, Proudman Oceanographic Laboratory. (POL Internal Document No.189)

Book section

Brown, J.M.; Amoudry, L.O.; Souza, A.J.; Plater, A.J.. 2015 Residual circulation modelled at national UK scale to identify sediment pathways to inform coastal evolution models. In: Wang, P.; Rosati, J.D.; Cheng, J., (eds.)The Proceedings of the Coastal Sediments 2015. Singapore, World Scientific, 14p.
Nicholls, R.J.; French, J.; Burninham, H.; van Maannen, B.; Payo, A.; Sutherland, J.; Walkden, M.; Thornhill, G.; Brown, J.; Luxford, F.; Simm, J.; Reeve, D.E.; Hall, J.M.; Souza, A.; Stansby, P.K.; Amoudry, L.O.; Rogers, B.D.; Ellis, M.; Whitehouse, R.; Horrillo-Carballo, J.; Karunarathna, H.U.; Pan, S.; Plater, A.; Dix, J.; Barnes, J.; Heron, E.. 2015 Improving decadal coastal geomorphic predictions: An overview of the iCOASST project. In: Wang, P.; Rosati, J.D.; Cheng, J., (eds.)The Proceedings of the Coastal Sediments 2015. Singapore, World Scientific, 16p.
Ramirez Mendoza, Rafael; Amoudry, Laurent; Thorne, Peter; Cooke, Richard; Simmons, Stephen; McLelland, Stuart; Murphy, Brendan; Parsons, Daniel; Jordan, Laura-Beth; Vybulkova, Lada. 2015 Impact of scaled tidal stream turbine over mobile sediment beds. In:Proceedings of the 11th European Wave and Tidal Energy Conference, EWTEC2015. Nantes, France, Technical Committee of the European Wave and Tidal Energy Conference, 6p.
Amoudry, L.O.; Bell, P.; Souza, A.J.; Thorne, P.D.. 2011 Intrawave modeling of turbulent flow and sediment transport over rippled beds. In: Wang, P.; Rosati, J.D.; Roberts, T.M., (eds.)The Proceedings of the Coastal Sediments 2011. Singapore, World Scientific, 1048-1059, 2768pp.
Amoudry, Laurent, O.; Souza, Alejandro, J.; Holt, Jason, T.. 2009 Sediment transport module for a B-grid coastal shelf ocean model. In: Mizuguchi, Masara; Sato, Shinji, (eds.)Proceedings of Coastal Dynamics 2009, 6th International Conference on Coastal Dynamics. Japan, World Scientific, Paper 88, 10pp.
Liu, P.L-F.; Amoudry, L.O.. 2007 Recent progress on understanding and modeling sediment transport in coastal environment. In: Zhuang, F.G.; Li, J.C., (eds.)New Trends in Fluid Mechanics Research, Proceedings of the Fifth International Conference on Fluid Mechanics, (Shanghai, 2007). Beijing, Tsinghua University Press, 23-28.

Conference item

Amoudry, Laurent. 2012 Modelling hydrodynamics and sediment transport in the coastal zone: key physical processes. [Other] In: Environmental Fluid Mechanics and Hydrology Seminars, Cornell University, 19 April 2012. (Unpublished)
Amoudry, Laurent. 2012 Modelling suspended sediment transport in shelf seas: the role of turbulence. [Speech] In: Liverpool Marine Symposium, Liverpool, UK, 26-27 January 2012. (Unpublished)
Amoudry, Laurent; Bolanos-Sanchez, Rodolfo; Brown, Jennifer; Souza, Alejandro. 2012 Modelling sediment transport in a macrotidal, funnel-shaped, bi-channel estuary: the Dee estuary. [Speech] In: 33rd International Conference on Coastal Engineering (ICCE), Santander, Spain, 01-06 Jul 2012. (Unpublished)
Amoudry, Laurent .O.; Liu, Philip,; Souza, Alejandro. J.; Thorne, Peter. D.. 2010 Upscaling of sediment erosion parameterization from small-scale, intra-wave models to regional ocean models. [Poster] In: Ocean Sciences 2010. (Unpublished)
Amoudry, Laurent; Souza, Alejandro. 2010 Influence of turbulence closure on estuarine sediment dynamics and morphodynamics. In: 32nd International Conference on Coastal Engineering, Shanghai, China, 30 June 2010 - 5 July 2010. CERC.
Amoudry, Laurent O; Souza, Alejandro J; Holt, Jason T. 2009 Sediment transport module for a B-grid coastal ocean model. In: Proceedings of Coastal Dynamics 2009: impacts of human activities on dynamic coastal processes, Tokyo. World Scientific.
Amoudry, Laurent O.; Souza, Alejandro J.. 2009 Sediment transport modelling in the POLCOMS. [Poster] In: UK Sediment Initiative 2009, Liverpool, 27-29 April 2009. Liverpool, Proudman Oceanogrpahic Laboratory.