The response of the western equatorial Pacific Ocean to westerly wind bursts during November 1989 to January 1990

1992 ◽  
Vol 97 (C9) ◽  
pp. 14289 ◽  
Author(s):  
M. J. McPhaden ◽  
F. Bahr ◽  
Y. Du Penhoat ◽  
E. Firing ◽  
S. P. Hayes ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
Equatorial Pacific ◽  
Westerly Wind ◽  
Equatorial Pacific Ocean ◽  
Western Equatorial Pacific ◽  
Wind Bursts ◽  
Westerly Wind Bursts

Distribution of 226Ra and 210Pb in the mixed layer of the western equatorial Pacific Ocean

1997 ◽  
Vol 48 (5) ◽  
pp. 371 ◽  
Author(s):  
Philip H. Towler ◽  
J. David Smith
Keyword(s):  
Surface Water ◽  
Pacific Ocean ◽  
Residence Time ◽  
Mixed Layer ◽  
Equatorial Pacific ◽  
Nutrient Concentrations ◽  
Residence Times ◽  
Equatorial Pacific Ocean ◽  
Depth Profiles ◽  
Western Equatorial Pacific

The residence time of particulate and dissolved 210Pb in the upper layer of the western equatorial Pacific Ocean is examined. Activities of dissolved 226Ra, dissolved and particulate 210Pb, and particulate 210Po were determined to a depth of 300 m in a series of depth profiles collected along a transect across the equator at 155˚E in November 1993. Total 210Pb in the surface water decreased from 2·7 Bq m-3 at 10˚N to 1·8 Bq m-3 at 10˚S. Dissolved 210Pb generally decreased with depth but showed subsurface (100–150 m) maxima at 10˚N and 5˚N. The nutrient concentrations at 300 m were highest at these stations, suggesting some degree of upwelling. Calculations indicate that the residence times of dissolved (<0·45 µm) and particulate (>0·45 µm) 210Pb in the top 300 m were 4·6–9·6 years and 0·15–0·29 year respectively.

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