164 



Salvador!, M. G. and M. L. Baron (1961). Numerical Methods in Engineering. 

 Prentice-Hall. 



Sheffner, N. (1986). Biperiodic waves in shallow water. In Proceedings of the Inter- 

 national Conference on Coastal Engineering., pp. 724-736. ASCE. 



Skjelbreia, L. and J. Hendrickson (1962). Fifth order gravity wave theory. In Pro- 

 ceedings of the 7th conference on coastal engineering, pp. 293-306. ICCE. 



Sobey, R. J. (1989). Variations on Fourier wave theory. International Journal for 

 Numerical Methods in Fluids 5, 1453-1467. 



Sobey, R. J. (1990). Wave theory predictions of crest kinematics. In A. Torum and 

 0. T. Gudmestad (Eds.), Water Wave Kinematics, pp. 215-231. Netherlands: 

 Kluwer Academic Publishers. 



Sobey, R. J. (1992). A local Fourier approximation for irregular wave kinematics. 

 Applied Ocean Research 14, 93-105. 



Steele, K. E., C.-C. Teng, and D. W. C. Wang (1992). Wave direction measurements 

 using pitch-roll buoys. Ocean Engineering 19, 349-375. 



Stokes, G. G. (1880). Mathematical and Physical Papers: Vol I, Chapter On the 

 theory of oscillatory waves, pp. 197-229. Cambridge University Press. 



Su, M.-Y. (1982). Three dimensional deep-water waves, part 1. experimental mea- 

 surement of skew and symmetric wave patterns. Journal of Fluid Mechan- 

 ics 124, 73-108. 



Sultan, N. J. (1992). Irregular wave-induced velocitites in shallow water. Technical 

 Report CERC-92-9, Coastal Engineering Research Center, US Army Engineer- 

 ing Waterways Experiment Station, Vicksburg, Mississippi USA. 



Sultan, N. J. and S. A. Hughes (1993). Irregular wave-induced velocities in shallow 

 water. Journal of Waterway, Port, Coastal and Ocean Engineering 119, 429- 

 447. 



Swan, C. (1990a). A viscous modification to the oscillatory motion beneath a series 

 of progressive gravity waves. In A. Torum and 0. T. Gudmiestad (Eds.), Water 



