Deterministic wave model for short-crested ocean waves: Part II. Comparison with laboratory and field measurements

The directional hybrid wave model (DHWM) is applied to one set of laborator y wave measurements and two sets of ocean wave measurements for the determi nistic prediction of wave properties in the vicinity of measurements. The D HWM first decomposes a measured wave field into its free-wave components an d then predicts the wave properties based on the decomposed free-wave compo nents. The comparisons between the predicted signals and the corresponding laboratory measurements show excellent agreement. The discrepancies between the predicted signals and the corresponding field measurements increase in comparison with those between the predicted and laboratory-measured signal s. However, the agreement between the predicted and the field-measured sign als remain satisfactory. These examples indicate that the DHWM is capable o f predicting wave properties of a short-crested ocean wave field in a deter ministic manner. Hence, it provides a robust method for ocean wave measurem ents and their data analysis. It is expected that the DHWM will have many a pplications to ocean science and engineering in the near future. (C) 1999 E lsevier Science Ltd. All rights reserved.