Dirk-Jan Walstra
Dirk Jan Walstra graduated as a Civil Engineer (Msc.) from Delft University of Technology in 1994, after which he spent two years working for CSIR in South Africa and undertaking coastal engineering consultancy projects related to coastal zone management, sand nourishments for the diamond mining industry in Namibia and habour extensions in South Africa, Mozambique and the Middle East. He joined Delft Hydraulics (now part of Deltares) as a coastal morphologist in 1996 and has been involved in numerous Dutch and international projects in the coastal zone in both a consultancy and research capacity. His specialist coastal modelling expertise means that he continues to play a key role in the development of the morphological models Delft3D and Unibest. In addition, he has led programmes within a number of EU-sponsored Marine Science and Technology research projects focussing on nearshore coastal hydrodynamic and morphologic processes and the effects of sand mining (SASME, COAST3D and SANDPIT) and has been involved in large scale projects in the USA (such as post-Katrina projects in Louisiana and coastal stabilization projects in Florida). Currently he is the Deltares program manager for the Mississippi Coastal Improvement Program.
Since 2005 he also holds a research associateship at Delft University of Technology and is an invited lecturer at Utrecht University (since 2004) and Twente University (since 2008).
He has published about 30 journal articles, more than 50 conference papers and has delivered key note presentations at several international conferences and workshops. He has supervised over 50 Msc students, 10 Phd students and has been an invited member on several international Phd committees.
Click here for Google Scholar Citations.
Working experience
| 1995 - 1996 | South Africa | Participated in a number of harbour design studies in South Africa, Mozambique and Mauritius. |
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Morphodynamic upscaling with the morphological acceleration (MORFAC) approach: error quantification.
Borsboom, M., Ranasinghe, R., Li, L., Walstra, D.J.R., 2013. Morphodynamic upscaling with the morphological acceleration (MORFAC) approach: error quantification. Submitted to Coastal Engineering.
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Wave-induced autogenic forcing on delta formation: effects of long term longshore sediment transport.
Li, L, Walstra, D.J.R., Storms, J.E.A., 2013. Wave-induced autogenic forcing on delta formation: effects of long term longshore sediment transport. Submitted to Marine Geology.
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Morphodynamic modelling of wave reworking of an alluvial delta and application of results in the standard reservoir modelling workflow.
Morphodynamic modelling of wave reworking of an alluvial delta and application of results in the standard reservoir modelling workflow. Accepted for publication in Sedimentology.
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Input reduction for long-term morphodynamic simulations in wave-dominated coastal settings.
Walstra, D.J.R., Hoekstra, R., Tonnon, P.K., Ruessink, B.G., 2013. Input reduction for long-term morphodynamic simulations in wave-dominated coastal settings. Accepted for publication in Coastal Engineering
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On bar growth and decay during interannual net offshore migration.
Walstra, D.J.R., A.J.H.M. Reniers, R. Ranasinghe, J.A. Roelvink, B.G. Ruessink, 2012. On bar growth and decay during interannual net offshore migration. Coastal Engineering Vol. 60, pp 190-200, doi: 10.1016/j.coastaleng.2011.10.002
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Processes controlling the development of a river mouth spit
Dan, S., Walstra, D.J.R., Stive, M.J.F., Panin, N., 2011. Processes controlling the development of a river mouth spit, Marine Geology. doi:10.1016/j.margeo.2010.12.005
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Controls on river delta formation; insights from numerical modeling
Geleynse, N., Storms, J.E.A., Walstra, D.J.R., Jagers, H.R.A., Wang, Z.B., and Stive, M.J.F. 2011. Controls on river delta formation; insights from numerical modeling, Earth and Planetary Science Letters, Vol 302, pp 217–226, doi: 10.1016/j.epsl.2010.12.013.
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Numerical modelling of erosion and accretion of plane sloping beaches at different sc
van Rijn, L.C., P.K. Tonnon, D.J.R. Walstra, Numerical modelling of erosion and accretion of plane sloping beaches at different scales, Coast. Eng. (2011), doi:10.1016/j.coastaleng.2011.01.009
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On bar growth and decay during interannual net offshore migration.
Walstra, D.J.R., A.J.H.M. Reniers, R. Ranasinghe, J.A. Roelvink, B.G. Ruessink, 2012. On bar growth and decay during interannual net offshore migration. Coastal Engineering Vol. 60, pp 190-200, doi: 10.1016/j.coastaleng.2011.10.002
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Processes controlling the development of a river mouth spit
Dan, S., Walstra, D.J.R., Stive, M.J.F., Panin, N., 2011. Processes controlling the development of a river mouth spit, Marine Geology. doi:10.1016/j.margeo.2010.12.005
Activities
| 2011 | Poland | Keynote address at the International Coastal Symposium (ICS2011) in Szczecin, Poland. |
| 2011 | Portugal | Keynote address at the conference on Estuarine and Coastal Morphodynamics (MEC2011) in Lisbon, Portugal. |
| 2010 - Present | Specialist advisor for dune safety assessment within the SBW program. | |
| 2010 | Program manager of impact study which is part the Mississippi Coastal Improvement Program. | |
| 2010 - Present | Specialist advisor in Ecobeach project. | |
| 2010 | France | Keynote address at the “Les littoraux à l'heure du changement climatique” conference in La Rochelle, France. |
| 2010 | France | Keynote address at the “Les littoraux à l'heure du changement climatique” conference in La Rochelle, France |
| 2009 | Project leader in the development of a new process based dune erosion model for the Netherlands. | |
| 2009 | The Netherlands | Project leader in the development of a new process based dune erosion model for the Netherlands. |
| 2008 - 2009 | The Netherlands | Project leader investigating morphological impact of outfall structure at Eemshaven, The Netherlands. |