SYMBOLS AND DEFINITIONS--Continued 



PHI phase-shift parameter 9 of modified lift force equation 



PI IT 



R mass density of water 



RES (I) difference between measured wave force and calculated wave 

 force 



SF wave force averaged through wave cycle 



T wave period 



U maximum horizontal water particle velocity 



XC length of pipe section 



XK parameter K of modified lift force equation 



XL wavelength 



ZV vertical distance from bottom to center of pipe section 



Tabulated Experimental Data 



ANG ■ orientation angle of pipeline with respect to wave crests 



CDH horizontal coefficient of drag 



CDV vertical coefficient of drag 



CLER bottom clearance 



CLV coefficient of lift (calculated using horizontal velocity 

 in direction of wave advance and projected area in plane 

 parallel to the pipeline axis) 



CLVA coefficient of lift (calculated using horizontal velocity 

 in direction of wave advance and projected area in the 

 plane normal to the direction of wave advance) 



CLVU coefficient of lift (calculated using the component of the 

 horizontal velocity in the direction perpendicular to the 

 pipeline axis and the projected area in the plane parallel 

 to the pipeline axis) 



CMH 



horizontal coefficient of mass' 



