- document
-
Wiegel, R.L. (author)Three methods of presenting wave data are discussed: the significant wave (including the "design wave" concept), the wave spectrum, and the directional spectra. Their use in calculating wave forces on pile supported structures is described, with a discussion of the relative usefulness of the linear versus the non-linear approach. The concept of...conference paper 1969
- document
-
Dorrestijn, J. (author), Crommelin, D.T. (author), Siebesma, A.P. (author), Jonker, H.J.J. (author), Jakob, C. (author)Observational data of rainfall from a rain radar in Darwin, Australia, are combined with data defining the large-scale dynamic and thermodynamic state of the atmosphere around Darwin to develop a multicloud model based on a stochastic method using conditional Markov chains. The authors assign the radar data to clear sky, moderate congestus,...journal article
- document
-
Pilon, J.J. (author)For 15 years already, fixed wave gauges for semi-continuous wave observations are used along the Netherlands coast. The waterdepth at location, as much as 6 km from the coastline, varies from 5 to 10 meters below M.S.L. The gauge - in general built of steel – carries the apparatus for measuring, registration and transmitting and also provides...report 1974
- document
-
Prangsma, G.J. (author)Sinds in 1968 zelfregistrerende stroommeters door het KNMI in gebruik worden genomen, is aan de geautomatiseerde behandaling van de verzamelde gegevens grote aandacht geschonken. In sen rapport (V-241, 1972) geven de Crook en van der Veen een beschrijving van programma's van de eerate verwarkingafase. Door het snel toenemende gebruik van de...report 1975
- document
-
Tijssen, S.B. (author), Van der Veen, K. (author), Visser, M.P. (author)Oceanographic observations were made during Autumn 1970 and Spring 1971. Special attention is given to the salinity maximum at about 100 m depth, resulting from the subtropical intermediate water possibly from both northern and southern origin. To obtain an insight in the spreading of these water types isentropic analysis according to Montgomery...report 1976
- document
-
Van Bennekom, A.J. (author), Tijssen, S.B. (author), Van der Veen, K. (author), Visser, M.P. (author)Results of CICAR-investigations off the northern Southamerican coast during autumn 1970 and spring 1971 are given, concerning the water below the 10oC-isotherm. Topographies of the sigma rt =27.3 and 27-4 surfaces indicate a motion of the Subantarctic Intermediate Water mass along the continental rise. This motion being far from regular gives an...report 1976
- document
-
van Woerkom, P.T.L.M. (author)The document contains a general theory towards the observation and optimal control of disturbed, target following aerospace systems. Disturbed, target following aerospace systems eire defined as aerospace systems that are designed to track a moving target system, while they are subjected to external, time-varying disturbances. The first five...report 1976
- document
-
Prins, J.J.M. (author)The existing fine attitude system of the Astronomical Netherlands Satellite was designed on the basis of conventional digital control techniques. The possibility of a more advanced approach is presented in this report. As an example, an alternative control algorithm for the scan mode has been developed with the use of state estimation and state...report 1976
- document
-
van Ingen Schenau, H.A. (author), Joosten, L.J.M. (author), Simons, J.L. (author)The study on image data security is directed to the requirement for exclusive access to satellite imagery in the concept of the Agricultiiral Real Time Imaging Satellite System (ARTISS). The security assessment indicates that user survey requests are handled confidentially and it shows the access vulnerability of the transmission of image data...report 1976
- document
-
Kraan, C. (author)Om de waarde na te gaan van de inzet van een stralingsthermometer (Barnes PRT-5) ter bepaling van de zeewatertemperatuur in verband met het kustwatercirkulatie-onderzoek, zijn tien meetvluchten met deze meter uitgevoerd in verschillende seizoenen boven een zeegebied van 20 bij 100 km voor de Nederlandse kust. Vastgesteld werd dat de...report 1977
- document
-
Bouws, E. (author), Komen, G.J. (author), Nooren, G.J.L. (author)A rather large number of conventional observations is available for the North Sea. Yet a comparison with the coverage of ERS-1 shows that its data will be a valuable addition to the existing data, especially in the north. The wave forecasting methods in use for swell forecasting in the southern North Sea suffer from a lack of data from the...report 1984
- document
-
van Woerkom, P.T.L.M. (author)Increases in size and mechanical complexity of spacecraft result in increased complexity of the mathematical model which describes the spacecraft dynamics. This results in turn in increased computational effort, in increased difficulties in understanding the characteristics of the spacecraft dynamics, and in increased difficulties in the design...report 1985
- document
-
van Woerkom, P.T.L.M. (author)Mathematical models of the dynamics of spacecraft are needed to carry out numerical simulations, to gain insight into the characteristics of the spacecraft dynamics, and to synthesize control algorithms suitable for online system Identification, estimation, and control. Increases in size and mechanical complexity of spacecraft result in...report 1985
- document
-
Olthof, J. (author), Loman, G. (author)In de periode maart tot april 1985 heeft de Adviesdienst Vlissingen enige brandingsstroommetingen uitgevoerd voor de kust van Walcheren ter hoogte van Joossesweg (nabij Westkapelle). Het doel van het meetonderzoek is het verkrijgen van meer inzicht in de veranderingen die optreden op een gesuppleerd strand ten gevolge van stroom en golven. Met...report 1986
- document
-
Maas, L. (author), Van Haren, H. (author)During springs, summers and autumns of 1980,1981 and 1982 a collaborative study on the seasonal stratification of the Central North Sea was performed by the Netherlands Institute for Sea Research, the Institute of Meteorology and Oceanography Utrecht and the Royal Netherlands Meteorological Institute. This report lists mooring positions, local...report 1986
- document
-
Langendoen, E.J. (author)Many harbors in the world suffer from siltation in their basins and in many cases removal of the deposited sediment leads to high costs. This siltation results from a net transport of sediment into the harbor caused by the water motion in the harbor entrance. The water motion is very complex and of a three-dimensional nature. Three main...report 1989
- document
-
Langendoen, E.J. (author)The research that has been presented in this report is a part of an ongoing study on the siltation of tidal harbors. The study deals with the water motion in the harbor entrance, which motion causes the siltation. As yet, too little is known about this complicated time-dependent water motion. The data obtained during the research will be used to...report 1990
- document
-
Kranenburg, C. (author)In this article some field observations, made in recent years, of internal wave motions in a density-stratified estuary are presented, In order to facilitate the appreciation of the results, and to make some quantitative comparisons, the relevant theory is also summarized. Furthermore, the origins of stratification in estuaries is briefly...report 1991
- document
-
Aarninkhof, S.G.J. (author)Since 1992, coastal morphology and hydrodynamics of the nearshore zone have been studied from video observations, within the framework of the so-called ARGUS research program. Image data are collected every day-light hour, at seven beach locations worldwide. Timeaveraged images show bright, longshore bands of intensities, clearly indicating the...master thesis 1996
- document
- Schraagen, J.M.C. (author), van Breda, L. (author), Rasker, P.C. (author) report 1999