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- Verhagen, J.H.G. (author), van Wijngaarden, L. (author) journal article 1965
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- Verhagen, J.H.G (author) journal article 1965
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Verhagen, H.J. (author)Dit artikel behandelt het deelonderzoek naar de sterkte van de glooiingen van de Oosterscheldediiken onder invloed van geconcentreerde golfaanval. ln dit artikel wordt naast de vastelling van een aantal parameters, met name de vaststelling van het berwijkmodel van een glooiing belicht. De geconcentreerde aanval (lange tijd op een vast niveau) is...journal article 1985
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Verhagen, H.J. (author), Maranus, J.W. (author)Langs de Zeeuwse kust bewegen grote massa's zand van zuid naar noord. Deze zandgolven zorgen voor een cyclisch kustgedrag. Bij de besluitvorming over kustverdedigingswerken en strandsuppleties is inzicht in de kinematica van deze golven essentieel.journal article 1987
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Verhagen, H.J. (author)De effectiviteit van strandhoofden in het licht van recente resultaten van zandgolfonderzoekjournal article 1988
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Verhagen, H.J. (author)Sand waves, defined as longshore wave-like movements of the shoreline, measured in a horizontal plane, are described along several stretches of the shoreline of The Netherlands. They have a celerity in the order of 50-200 m/yr, a period of 50- 150 years and an amplitude of 30- 500 m. They are found along the whole Dutch shoreline. Analysis of...journal article 1989
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Verhagen, H.J. (author)Because dunes protect a large part of The Netherlands against coastal flooding and inundation, it is vital to guarantee the strength of these natural sea defenses. Besides sea defense, dunes have other functions. Sandy shorelines and dunes are frequently eroded. A legal framework has been developed that guarantees the required safety-level of...journal article 1990
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Verhagen, H.J. (author), Struik, P. (author)Tegenwoordig is bijna elk probleem bij de versterking van dijken op te lossen door een kunstwerk te maken in plaats van de traditionele grondconstructie. Soms wordt bij de afweging te weinig rekening gehouden met de lange levensduur en de bijzondere aard van' de waterkering'. Dat kan toekomstige generaties met grote problemen opzadelen.journal article 1993
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Schokking, L.A. (author), Janssen, P.C. (author), Verhagen, H.J. (author)The stability of stones in propeller-induced jet wash is still difficult to predict. Especially the trend of bowthrusters increasing in size and power in sea going ships (especially ferries) over the last years may be a reason for concern when dealing with the protection of slopes and beds. But also ships used in inland navigation are using...journal article 2003
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Lam, N.T. (author), Verhagen, H.J. (author), Van der Wegen, M. (author)This paper presents an application of an one-dimensional unsteady numerical model DUFLOW for hydrodynamic simulation of a complex lagoon-inlet system in Vietnam. The difficulties due to the lack of data for model boundary conditions is overcome by using sensitivity analysis approach for the uncertainties of boundary conditions. Model results are...journal article 2004
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Lam, N.T. (author), Verhagen, H.J. (author), Van der Wegen, M. (author)Stability analysis of tidal inlets is very important in providing knowledge on the behaviour of tidal inlet and lagoon systems. The analysis results can help to plan and manage the system effectively as well as to provide information for stability design of the inlets. This paper presents a method of building and applying the Escoffier diagram...journal article 2004
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Lam, N.T. (author), Verhagen, H.J. (author), Van der Wegen, M. (author)Hydraulic characteristics of flow in a tidal inlet act an important role in morphological changes of the inlet. In normal conditions, inlet currents flush sediment out of the inlet to maintain its opening against longshore sediment transports that tend to close the inlet. The currents in the inlet are contributed by the tides and also from...journal article 2004
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Terrile, E. (author), Reniers, A.J.H.M. (author), Stive, M.J.F. (author), Tromp, M. (author), Verhagen, H.J. (author)Incipient motion of coarse particles under regular shoaling waves is examined. Experiments are performed to investigate the effects of bed fluid acceleration on coarse particle stability. By varying wave height, wave period and water depth, combinations of similar peak orbital velocities and weak to strong intra-wave accelerations were created....journal article 2005
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Tuan, T.Q. (author), Verhagen, H.J. (author), Visser, P.J. (author), Stive, M.J.F. (author)To increase physical insight into wave overwash processes at low-crested beach barriers, wave overtopping discharge events rather than the conventional average overtopping discharge need to be quantified. Also, in order to make intelligent use of the many empirical formulations on wave overtopping discharge at breakwaters from literature, a...journal article 2006
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- Beelaerts van Blokland, W.W.A. (author), Verhagen, W.J.C. (author), Santema, S.C. (author) journal article 2008
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Tuan, T.Q. (author), Stive, M.J.F. (author), Verhagen, H.J. (author), Visser, P.J. (author)A new process-based approach is introduced for a more efficient computation of the overflow-induced growth of an erosional channel in a noncohesive homogeneous narrow landmass such as the breach growth in a sand-dike. The approach is easy to incorporate in a 1D/2DV morphodynamic model to compute the channel growth both vertically and laterally....journal article 2008
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Gu, D. (author), Verhagen, H.J. (author), Van de Ven, M. (author)PUR-revetment is a newly developed method for hydraulic application. Its structure is similar to that of open stone asphalt revetment, but the crushed stones are glued by polyurethane (PUR) instead of bitumen. To study the feasibility of applying PUR-revetment, a research based on the comparisons between PUR-revetment and open stone asphalt...journal article 2008
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Lam, N.T. (author), Stive, M.J.F. (author), Wang, Z.B. (author), Verhagen, H.J. (author), Thuy, V.T.T. (author)Hydrodynamics and morphodynamics of a seasonally forced tidal inlet system are investigated using numerical models. The ocean forcing including tidal and wave actions and sediment transport is simulated using Delft3D model. Fluvial processes in Delft3D are taken into account as results from SOBEK RURAL model. Analysis of the numerical simulation...journal article 2008
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Buist, P.J. (author), Teunissen, P.J.G. (author), Giorgi, G. (author), Verhagen, S. (author)Traditionally the relative positioning and attitude determination problem are treated as independent. In this contribution we will investigate the possibilities of using multiantenna (i.e., triple and quadruple) data, not only for attitude determination but also for relative positioning. The methods developed are rigorous and have the additional...journal article 2009
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Hoan, N.T. (author), Stive, M.J.F. (author), Booij, R. (author), Hofland, B. (author), Verhagen, H.J. (author)This paper presents the results of an experimental study on stone stability under nonuniform turbulent flow, in particular expanding flow. Detailed measurements of both flow and turbulence and the bed stability are described. Than various manners of quantifying the hydraulic loads exerted on the stones on a bed are extensively reviewed and...journal article 2011