Searched for: faculty%3A%22Civil%255C%252BEngineering%255C%252Band%255C%252BGeosciences%22
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Verhagen, H.J. (author)Uitgewerkte (teken) opdrachten voor het vak constructieleer I.lecture notes 1972
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Bijker, E.W. (author), Van der Leijé, J.P. (author), Pilon, J.J. (author), Svasek, J.N. (author), In 't Veld, J.K. (author), Verhagen, H.J. (author)When longshore sediment transport is interrupted by a construction along a coast, e.g harbour moles or a dredged approach channel, the equilibrium of the coastline may be disturbed. When the disruption is caused by breakwaters, the longshore transport that is held back will cause accretion updrift of the breakwaters and erosion downdrift of them...conference paper 1981
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Luidikhuize, D. (author), Verhagen, H.J. (author)Laboratory measurements and theoretical derivation of the resulting wave field caused by two incoming regular wave wave fields with the same period, but different direction. Test were performed in the wave basin of Delft University of Technologyreport 1981
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Loman, G.J.A. (author), De Jong, J.J.A. (author), Moir, J.R. (author), Burgers, A. (author), Verhagen, H.J. (author)Man-made islands in the Mackenzie river (Canada) for oil exploitation may obstruct the free flow of ice during spring break up. These ice dams may cause considerable rise of the water level in the rivers, resulting in floods. A numerical model is presented to simulate ice dam formation an river floods.conference paper 1983
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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)Het gebruik van kennissystemen (expersystemen) bij de beoordeling van taludstabililteit en bestortingen in Zeelandbook chapter 1987
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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), Volker, W.F. (author)The most urbanized part of the Netherlands is situated below sea level and is protected by dikes. By act of parliament allowable inundation frequencies for each part of the country are fixed. In case of two dangers (river run-off and storm surge) it is a problem to determine design values for dikes. Guidelines are developed to solve these...conference paper 1989
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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)The 1400 km Dutch coastline is affected by sea-level rise. At this moment a legal framework is made to guarantee safety of the dikes also in future. Also a national policy is developed for compensation of all coastal erosion. Both measures should make it possible for the Netherlands to survive an increased sea-level rise.conference paper 1990
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Visser, P.J. (author), Vrijling, J.K. (author), Verhagen, H.J. (author)The set-up and results of a field experiment on sand-dike breach erosion are described, It is found that the breaching process for the 2.2 m high sand-dike is similar to that in Visser's (1988) laboratory experiments with a 0.6 m high sand-dike. Confrontation of Visser's (1988) breach erosion model with the field data shows reasonable agreement...conference paper 1990
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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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Stigter, C. (author), Verhagen, H.J. (author), De Vriend, H.J. (author), Van der Weijde, R.W. (author), Van Raalten, C. (author), Loxham, M. (author)In the Netherlands today much attention is paid to the effect of coastal structures on the environment. In the past it was usual to quantify the effect of such a structure on its environment solely with the purpose of deciding whether that effect could imply any hazard to the structure itself (or to structures in the neighbourhood). Nowadays...conference paper 1990
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Louisse, C. (author), Verhagen, H.J. (author)Overview of the Netherlands policy on coastal protection and coastal defenceconference paper 1990
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Verhagen, H.J. (author)The 350 km long Dutch coast along the North Sea is characterized by alternating coastal stretches of accretion and erosion resp. resulting in seaward and landward displacement retreats of the shoreline. Places of accretion and erosion also vary in time. Behind the dunes are low lying polders (very often with a ground level even below the low...conference paper 1990
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Verhagen, H.J. (author)The government of The Netherlands has decided in the summer of 1990 to maintai.n the coastline at the position of 1990. This will be done mainly by artificial beach nourishment. The costs will be paid by the national government. The purpose of this coastal maintenance is to maintain a sufficient level of safety and to maintain the various...conference paper 1991
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Roelse, P. (author), Verhagen, H.J. (author)In the Netherlands much land was captured from the sea. At the same time however along the coast severe losses of land occurred. The main reasons were sea level rise and effects of decreasing tidal volumes of estuaries. Besides there were the local effects of shifting tidal channels and periodical movements of the coastline. Building of groynes,...conference paper 1991
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Verhagen, H.J. (author)Simple design rule for artificial beach nourishment, as applied in the Netherlands.conference paper 1992
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Verhagen, H.J. (author), Yap, J.T.L. (author)Copying solutions from the western, industrial countries for application in developing countries is in general not the best solution for solving the problems of developing countries. The main reason for that is that the available resources in the developing world are different from the resources in western countries. In the industrialised...conference paper 1992
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