60 



• •-■■•■ 



- ■■ 









..... 



■••• 











W 











••-■• - 











?0 



•--•■• ■ 











10' 



30' 



50' 



FIGURE 19. MODEL 4 - SURVEY PLAN APPLIED TO POINT-MASS MODEL 



DATA TO SIMULATE A NORMAL SHIPBOARD GRAVITY SURVEY, 

 i.e., TRACK DIRECTION E-W, TRACK SPACING 3 nm, 

 SAMPLING INTERVAL 1/3 nm. 



39 



