14 C CYCLE AND ITS IMPLICATIONS FOR MIXING RATES 



13 



1000 



2000 



3000 



4000 



X 



£ 5000 



UJ 



Q 



-rs: 



1000 - 



2000 - 



3000 



4000 - 



5000 



• 50°20'S, 169°E 

 a 44°55'N, 134°56'W 

 o 33° N, 118°W 

 a 14°55'N, 134°W 

 7°N, 120°W 



«8^m 



=4l 



A 35 05'N, 180 W 

 o 35°01'N, 160°W 

 a 28°12'N, 139°W 

 a 27°27'N, 150°35*W 



Pacific Ocean 



-100 



-200 



-100 



-200 



-300 



14 



[ Ac 



Fig. 3 The 1 4 C specific activities of ocean-water bicarbonate as a 

 function of depth for the Pacific and Indian oceans as given by Bien, 

 Rakestraw, and Suess. 17 A 14 C is the per mille deviation from 19th century 

 wood after correction for isotope fractionation. 



