The "Stereo-wave" experiment: A contribution of Rijkswaterstaat and the Delft University of Technology to JONSWAP 2

This report is intended to give a brief description of the ideas underlying the experiment of RWS and THD in the framework of JONSWAP 2 and the practical implications thereof. Some results of the preparation of this experiment are given. It is tried to explain some of the theoretical concepts in a simple manner. It has been found that it is desirable to obtain an interpretation of the spatial structure of seawaves in the framework of an international seawave research project, called JONSWAP 2. This project is aimed at testing theoretical concepts of wave generation and attenuation. The measurements can be used in the framework of this project but also for applications in other fields (marine engng., coastal engng. etc.). The technique for recording the waves will be an adaptation of existing stereophotographic procedures. It may be used for future investigations of wavephenomena. Based on considerations of the anticipated wave conditions and practical experience, specifications for equipment and procedures have been obtained. The organization, finances and material support have been agreed upon by Rijkswaterstaat and the Delft University of Technology. The experiment was initiated in January 1972; in September the experiment was incorporated in JONSWAP 2. The development of the equipment and the numerical analysis procedures has started. The realization of JONSWAP 2 is planned for September 1973, the publication of results in 1974 and 1975.Hydraulic EngineeringCivil Engineering and Geoscience