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Verhagen, H.J. (author)As a continuation of the initial study on the morphology of the Douro mouth, performed by Hydronamic in 1982, the Administracao dos Portos de Douro e Leixoes commisioned Hydronamic bv to construct a mathematical hydro-morphological model of the Douro mouth. Within the framework of the study an analysis of old charts, available in the archivas of...report 1983
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Verhagen, H.J. (author)The Administracao dos Portos do Douro e Leixoes is confronted with the fact that future expansion of the port area of Leixoes is limited by the surrounding hills and urbanization. One of the alternatives for future expansion might be the creation of port facilities in the Douro estuary, where a relatively large, flat area is available. However,...report 1982
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Verhagen, H.J. (author), Van Maastrigt, R. (author)Study for the design of an access channel to the coal port of Cerrejon, Colombia using a ship manoeuvring simulatorreport 1982
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Verhagen, H.J. (author)Addtional drawings for the mathematical model of the estimated siltation in the access channel to Siderurgia nacional in Seixal (Lisbon).report 1982
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Verhagen, H.J. (author)Integrated study on the hydro-morphology of the Tagus outer estuary and the Tagus Inner estuary. Wave penetration calculations, tidal flow calculations and calibration measurements.report 1982
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Verhagen, H.J. (author)Siderurgia Nacional EP has planned to construct an ore terminal nearby Seixal (Portugal) and to dredge an access channel and turning basin in the southern part of the Tagus Inner Estuary. In the Hydronamic report, entitled Terminal do Seixal, Hydro-Morphological Study, February 1982/ P457' the hydraulical, nautical and morphological consequences...report 1982
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Hydro-morphological study Tagus Estuary: Additional work salt intrusion due to dredging of Barra SulVerhagen, H.J. (author)In case Barra Sul is dredged, there is a risk of an increased salt intrusion into the estuary. Model computations have been performed to comper present salt intrusion with future salt intrusionreport 1982
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Verhagen, H.J. (author), Starink, A.C. (author)The calculations of bottom changes presented in our report "Terminal do Seixal Hydro-morphological study", February 1982 were based on a calibrated sediment transport formula. This formula was calibrated with the results of measurements made by Hydronamic in September 1981. These measurements were executed during one of the driest summers...report 1982
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Verhagen, H.J. (author)Hydronamic has performed a study for the design of the new access channel to the terminal of Siderurgia Nacional at Seixal (near Lisbon) in the Tagus estuary. The report deals with the following subjects: - In chapter 2 a description is given of the mathematical tidal model, the calibration thereof and the final results. - Chapter 3 deals with...report 1982
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Verhagen, H.J. (author)Summary of the engineering activities needed for the design of man-made islands, with focus on arctic areasreport 1982
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- Verhagen, J.H.G. (author) report 1981
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Verhagen, H.J. (author)Morphological study (measurements and computation) for a new access channel to the Quimigal productuion plant in Seixal (Lisbon) in the Tagus Estuary (Tejo). The report contains measurement data of flow and sediment concentrations on various locations in the Tagus inner estuary.report 1981
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Verhagen, H.J. (author), Loman, G.J.A. (author)Norman Hells is situated on the north bank of the Mackenzie River, 145 km south of the Arctic Circle. The use of a pool-wide water flood system for secondary recovery and the features of the oil-bearing structure require six man-made platforms to provide vertical access to the portion of the oil pool that 1 ies beneath the Mackenzie River (60%)....report 1980
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Verhagen, H.J. (author)Methode van berekenen van breakwaters met de methode van Bruun en Günbak, door gebruik te maken van het Iribarrengetal, en zo de Hudson formule te verbeteren.report 1980
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Verhagen, H.J. (author)In a densely populated country such as The Netherlands it is almost impossible to install large numbers of large windturbines on the mainland. That was the main reason to investigate the possibilities of siting the windturbines offshore on the Dutch part of the North Sea Continental Shelf, with a further advantage of a higher windfactor. The...report 1980
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- Verhagen, J.H.G. (author) report 1979
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- Verhagen, J.H.G. (author) report 1978
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Verhagen, H.J. (author)During the dry season shipping between Mongu and Kalabo is impossible, therefore this project was started to improve the situation by dredging. Dredging was started at Mongu harbour, where a new dredger was delivered, assembled and launched. Due to the urgency of the project dredging had to be started before a profound survey concerning the...report 1978
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De Koning, M.J.A. (author), Swart, W. (author), Verhagen, H.J. (author)Onderzoek van Rijn-Schelde-Verolme en Hydronamic naar de mogelijkheden tot het plaatsen van windturbines op de Noordzee in het kader van het Nationaal Onderzoekprogramma Windenergie.report 1978
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- Verhagen, J.H.G. (author) report 1977