CONTENTS 



Page 



CONVERSION FACTORS, U.S. CUSTOMARY TO METRIC (SI) 5 



SYMBOLS AND DEFINITIONS 6 



I INTRODUCTION 9 



II WAVELENGTH MODIFICATION AND THE STOPPING OF WAVES 10 



III CURRENT- INDUCED CORRECTIONS WHEN BOTTOM PRESSURE MEASUREMENTS 



ARE USED TO DETERMINE SURFACE WAVE HEIGHTS 14 



IV EXAMPLE PROBLEM 18 



V SUMMARY 20 



TABLE 



(L./cL,) and FM for various values of ft 13 



FIGURES 



1 Relationship between horizontal current velocity, _V, horizontal wave 



vector, K, wave orthogonal, wave crest, wave ray, and angle, 11 



2 Contours of dimensionless wavelength factor, R, 11 



3 Contours of dimensionless wave height factor, Rn 15 



4 Schematic representation of how QA and fiD are related to FL 



and FS for the example problem in Section IV 17 



