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Verhagen, H.J. (author)For the determination of the stability of coastlines, coastal erosion and the design of erosion protection studies, the “local” wave climate is the most important input parameter. For morphology, “local” means just outside the breaker line. On relatively calm days the local wave climate is strongly influenced by the effect of sea breeze. On the...conference paper 2000
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Verhagen, H.J. (author)One of the major problems in the design of coastal structures is that the design has to be based on very uncertain input data. This implies that the degree of uncertainty is an important value for the designer. In traditional design the uncertainty is not really quantified, but an overall “safety factor” is included. The problem of this approach...conference paper 2000
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Ye, S.Q. (author), Verhagen, H.J. (author)In order to develop a new philosophy of flood safety in terms of probability of a certain level, two mathematical models of breach growth in sandy dikes have become available to determine the flood discharge in case of dike failure. BREACHES 1.0, developed at Alkyon/Delft Hydraulics (Steetzel) and BRES 1.0 at Delft University of Technology ...conference paper 1999
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Verhagen, H.J. (author), Savov, B. (author)For the determination of the stability of coastlines, coastal erosion and the design of erosion protection studies, the “local” wave climate is the most important input parameter. For morphology, “local” means just outside the breaker line. On relatively calm days the local wave climate is strongly influenced by the effect of sea breeze. On the...conference paper 1999
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Verhagen, H.J. (author), De Vries, W.S. (author)Practical problems in the transfer of knowledge and skills to coastal engineers in training, with focus on the training of coastal engineers from developing countries and other countries in transition. The difference between the training of scientists and engineers.conference paper 1999
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Verhagen, H.J. (author)Introductory lecture on policy analysis and decision making, with a focus on decision makers in ports and harbours.conference paper 1998
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Verhagen, H.J. (author)Description of a simulation game to study and simulate decision making in a port and harbour environment with both social as well as environmental problems. The simulation game has been developed for a course for Black Sea port managers.conference paper 1998
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Verhagen, H.J. (author)Basic lecture on risk analysis for the design of coastal structures.conference paper 1998
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Verhagen, H.J. (author)In general the problem in education is that we teach nowadays students the knowledge from five years ago, to be applied in the next 5 to 15 years (I admit, the student of today will have reached his retirement when he will participate in the 50th ICCE, the title is exaggerating reality). When one analyses the developments in the profession, it...conference paper 1996
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Verhagen, H.J. (author)Worldwide there is a need for training of engineers to work within the framework of Coastal Zone Management. This has effects on the education of engineers. Moreover, the requirements for an educational program for coastal engineers from developing countries are quite different from the requirements for the training of engineers from the...conference paper 1995
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Verhagen, H.J. (author), Pilarczyk, K.W. (author), Loman, G.J.A. (author)In the Netherlands we have a strong tradition in making zoning regulations, town and country planning, and so on The Ministry of Environmental Affairs, Town and Country Planning and Housing is one of the most important ministries in this country In matters of planning the basis is the "memorandum on town and country planning", which is renewed...conference paper 1994
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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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Hillen, R. (author), Van de Wetering, B.G.M. (author), Verhagen, H.J. (author)The Southern North Sea is bordered by Great-Britain, France, Belgium, The Netherlands, Germany and Denmark. The North Sea basin and its adjacent shorelines are intensively used. Management of the basin and the coastal zone is therefore essential. Because of the small scale of the area, the dense population and the big scale of the interactions,...conference paper 1993
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Verhagen, H.J. (author), Pilarczyk, K.W. (author)The coast is a very important aspect of life in the Netherlands. 60 % of the Netherlands is below the sea level, everyone lives less than 200 km from a beach, and for most people the sea is less than 50 km away. But in the Netherlands there is officially no Agency for Coastal Zone Management, neither are there laws on Coastal Zone Management. On...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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Verhagen, H.J. (author)Simple design rule for artificial beach nourishment, as applied in the Netherlands.conference paper 1992
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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)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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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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Louisse, C. (author), Verhagen, H.J. (author)Overview of the Netherlands policy on coastal protection and coastal defenceconference paper 1990