628 



FEKCEKCAGB 



^o^ 



I 100 I 



4-10 



EERCEHTAGa: ERROR IN rETTH CALCmATED BT ORIGINAL METHOD 



ISRGEREAGS; 



£s:^xioo 



d 



-10 



PERCENIAm ERROR IN DEPTH CALCULATED BT THE REVISED METHOD 

 IN TOICH A CORRECTION IS MATE FOR DCtCE AND H.UME FACTORS 



IN BOTH FIGOEES THE DEPTH ERRORS ARE PLOTTED ON THE BASIS OF THE ELIME 

 FACTOR V/vq. in THE UPPER FIGURE EACH RESULT IS LAffiLLED WITH THE KME 

 FACTOR n FOUND IN ITS CALCULATION. 1HE GROSS LINES SHOW OHE ALIGMJENT 

 OP THESE UNCORRECTED RESULTS WITH n AND f/v^. THE FORMULA BASED ON 

 THIS ALIGMIEHT IS:- 



^ = -^ - 0.5 + 0.78 f/Vo + 0.0t2 n - 0.00012 n'^ 

 AND THE SAME RESULTS CORRECTED IN THIS WAI ARE SHOWN IN IHE LOTEH FIGURE. 



