Hostname: page-component-745bb68f8f-v2bm5 Total loading time: 0 Render date: 2025-01-08T15:41:22.430Z Has data issue: false hasContentIssue false
  • English
  • Français

Radiocarbon Measurements in South Pacific Ocean Waters in the Vicinity of the Subtropical Convergence Zone

Published online by Cambridge University Press:  18 July 2016

R. J. Sparks ,
G. W. Drummond ,
G. W. Brailsford ,
D. C. Lowe ,
K. R. Lassey ,
M. R. Manning ,
C. B. Taylor  and
Gavin Wallace
R. J. Sparks
Affiliation:
Nuclear Sciences Group, DSIR Physical Sciences, P. O. Box 31312, Lower Hutt, New Zealand
G. W. Drummond
Affiliation:
Nuclear Sciences Group, DSIR Physical Sciences, P. O. Box 31312, Lower Hutt, New Zealand
G. W. Brailsford
Affiliation:
Nuclear Sciences Group, DSIR Physical Sciences, P. O. Box 31312, Lower Hutt, New Zealand
D. C. Lowe
Affiliation:
Nuclear Sciences Group, DSIR Physical Sciences, P. O. Box 31312, Lower Hutt, New Zealand
K. R. Lassey
Affiliation:
Nuclear Sciences Group, DSIR Physical Sciences, P. O. Box 31312, Lower Hutt, New Zealand
M. R. Manning
Affiliation:
Nuclear Sciences Group, DSIR Physical Sciences, P. O. Box 31312, Lower Hutt, New Zealand
C. B. Taylor
Affiliation:
Nuclear Sciences Group, DSIR Physical Sciences, P. O. Box 31312, Lower Hutt, New Zealand
Gavin Wallace
Affiliation:
Nuclear Sciences Group, DSIR Physical Sciences, P. O. Box 31312, Lower Hutt, New Zealand
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Distribution profiles of radiocarbon in dissolved inorganic carbonate have been measured along two transects in the southern Pacific, east of New Zealand. Use of accelerator mass spectrometry, with its small-sample-size capability, made it possible to sample near-surface waters with a depth resolution of a few tens of meters. Sampling of deeper water was guided by salinity and temperature data transmitted by a conductivity-temperature-depth probe. The measurements, taken over the Chatham Rise, show highly structured profiles that can be correlated with known circulation patterns in this region.

Type
III. Global 14C Production and Variation
Information
Radiocarbon , Volume 34 , Issue 3: Proceedings of the 14th International Radiocarbon Conference , 1992 , pp. 727 - 736
Copyright
Copyright © The American Journal of Science 

References

Broecker, W., Peng, T-H., Ostlund, G. and Stuiver, M. 1985 The distribution of bomb radiocarbon in the ocean. Journal of Geophysical Research 90(C4): 6953–6970.CrossRefGoogle Scholar
Heath, R. 1976 Models of the diffusive-advective balance at the Subtropical Convergence. Deep-Sea Research 23: 1153–1164.Google Scholar
Heath, R. 1981 Oceanic fronts around southern New Zealand. Deep-Sea Research 28A(6): 547–560.Google Scholar
Heath, R. 1982 Physical oceanography of the waters over the Chatham Rise. NZOI Summary 18.Google Scholar
Sparks, R., Lowe, D. C., Dlugokencky, E. J., Drummond, G. W. and Brailsford, G. W. 1988 Method for the extraction of CO2 from seawater for 14C analysis by AMS. Institute of Nuclear Sciences Internal Report INS-R-375.Google Scholar
Stuiver, M. and Polach, H. 1977 Discussion: Reporting of 14C data. Radiocarbon 19(3): 355–363.CrossRefGoogle Scholar