Enhanced scavenging of 231Pa relative to 230Th in the South Atlantic south of the Polar Front: Implications for the use of the 231Pa/230Th ratio as a paleoproductivity proxy

Earth and Planetary Science Letters

Volumn 149, Issue 1-4, 1997, Pages 85-100

  Walter, H J ^a   Rutgers Van Der Loeff, M M ^a   Hoeltzen, H ^a  

^a ALFRED WEGENER INSTITUTE FOR POLAR AND MARINE RESEARCH   (Germany)

Author keywords

Fractionation; Opal; Paleoproductivity; Radionuclides; Scavenging; Southern Ocean

Indexed keywords

FRACTIONATION; MARINE SEDIMENT; OPAL; PALAEOPRODUCTIVITY; RADIOISOTOPES; RADIONUCLIDE; SCAVENGING; SEDIMENTS;

ATLANTIC, (SOUTH);

EID: 0030668712     PISSN: 0012821X     EISSN: None     Source Type: Journal    
DOI: 10.1016/s0012-821x(97)00068-x     Document Type: Article

References (53)

1. R. Eppley, B.J. Peterson, Particulate organic matter flux and planctonic new production in the deep ocean, Nature 282 (1979) 677-680.
2. W.S. Broecker, T.-H. Peng, Tracers in the Sea, Lamont-Doherty Geol. Observ., Columbia Univ., 1982, 690 pp.
3. 2 change: The iron hypothesis, Paleoceanography 5 (1990) 1-13.
4. 2, Nature 308 (1984) 621-624.
5. R.S. Keir, Reconstructing the ocean carbon system variation during the last 150,000 years according to the Antarctic nutrient hypothesis, Paleoceanography 5 (1990) 253-276.
6. N. Kumar, R.F. Anderson, R.A. Mortlock, P.N. Froelich, P. Kubik, B. Dittrich-Hannen, M. Suter, Increased biological productivity and export production in the glacial Southern Ocean, Nature 378 (1995) 675-680.
7. W.H. Berger, K. Fischer, C. Lai, G. Wu, Ocean productivity and organic carbon flux, part 1: Overview and maps of primary production and export production, SIO Ref. Ser. 87-30, Scripps Inst. Oceanogr., 1987, 67 pp.
8. A.J. Van-Bennekom, G.W. Berger, S.J. van der Gaast, R.T.P. De Vries, Primary productivity and the silica cycle in the Southern Ocean (Atlantic Sector), Palaeogeogr. Palaeoclimatol. Palaeoecol. 67 (1988) 19-30.
9. G.M. Bareille, L. Labracherie, L.D. Labeyrie, J.J. Pichon, J.L. Turon, Biogenic silica accumulation rate during the Holocene in the southeastern Indian Ocean, Mar. Chem. 35 (1991) 537-552.
10. C.C. Nürnberg, Bariumfluß und Sedimentation im südlichen Südatlantik, Hinweise auf Produktivitätsänderungen im Quartär, Ph.D. Thesis, Univ. Kiel, 1995.
11. 231Pa, Paleoceanography 7 (1992) 783-798.
12. 231Pa in the Pacific Ocean during the Holocene period, Earth Planet. Sci. Lett. 113 (1992) 173-189.
13. 10Be in the northeastern Pacific, Geochim. Cosmochim. Acta 57 (1993) 205-217.
14. 15N, Paleoceanography 8 (1993) 611-629.
15. 230Th ratios in sediments as a proxy for past changes in Southern Ocean productivity, Nature 362 (1993) 45-48.
16. N. Kumar, Trace metals and natural radionuclides as tracers of ocean productivity, Ph.D. Thesis, Columbia Univ., New York, 1994.
17. 230Th ratio, Ph.D. Thesis, Woods Hole Oceanogr. Inst., MA, 1994.
18. 232Th in seawater, Earth Planet. Sci. Lett. 80 (1986) 241-251.
19. 231Pa from the open ocean, Earth Planet. Sci. Lett. 62 (1983) 7-23.
20. 231Pa at ocean margins, Earth Planet. Sci. Lett. 66 (1983) 73-90.
21. 230Th profiles in the open ocean water column, Deep-Sea Res. 32 (1985) 1209-1220.
22. 231Pa near the Antarctic Polar Front in the South Atlantic, Deep-Sea Res. 40 (1993) 339-357.
23. E.F. Yu, R. Francois, M.P. Bacon, Similar rates of modern and last-glacial ocean thermohaline circulation inferred from radiochemical data, Nature 379 (1996) 689-694.
24. M.P. Bacon, Tracers of chemical scavenging in the ocean: boundary effects and large scale chemical fractionation, Philos. Trans. R. Soc. London Ser. A 320 (1988) 187-200.
25. 210Pb, Deep-Sea Res. II 41 (1994) 537-561.
26. 231Pa, Earth Planet. Sci. Lett. 96 (1990) 287-304.
27. 231Pa during pulsed hydrothermal activity at 20°S East Pacific Rise, Geochim. Cosmochim. Acta 52 (1988) 669-677.
28. 231Pa in the biological productive northern North Pacific, Earth Planet. Sci. Lett. 93 (1989) 223-232.
29. 231Pa in the deep-sea surface sediments of the Pacific Ocean, Geochim. Cosmochim. Acta 50 (1986) 81-89.
30. A. Leynaert, D.M. Nelson, B. Queguiner, P. Treguer, The silica cycle in the Antarctic Ocean: is the Weddell Sea atypical?, Mar. Ecol. Progr. Ser. 96 (1993) 1-15.
31. D.J. DeMaster, The marine budgets of silica and 32-Si, Ph.D. Thesis, Yale Univ., New Haven, 1979.
32. E. Boyle, Deep water distillation, Nature 379 (1996) 679-680.
33. U. Bathmann, M. Schulz-Baldes, E. Fahrbach, V. Smetacek, H.-W. Hubberten, The expeditions Antarktis IX/1-4 of RV "Polarstern" in 1990/91, Ber. Polarforsch. 100 (1992) 1-403.
34. R. Gersonde, The expedition Antarktis X/5 of RV "Polarstern" in 1992, Ber. Polarforsch. 131 (1993) 1-167.
35. U. Bathmann, V. Smetacek, H. de Baar, E. Fahrbach, G. Krause, The expeditions Antarktis X/6-8 of RV "Polarstern" in 1992-93, Ber. Polarforsch. 135 (1994) 1-236.
36. 234Th, Deep Sea Res. II 44 (1997) 457-478.
37. D.R. Mann, L.D. Surprenant, S.A. Casso, In situ chemisorption of transuranics from seawater, Nucl. Instrum. Methods Phys. Res. 223 (1984) 235-238.
38. R.F. Anderson, A.P. Fleer, Determination of natural actinides and plutonium in marine particulate material, Anal. Chem. 54 (1982) 1142-1147.
39. H.F. Steger, W.S. Bowman, DL-1a: A certified uranium-thorium reference ore, CANMET Rep. 80-10E, CANMET, Energy, Mines Resour. Can., 1980, 15 pp.
40. R.G. Hansen, E.J. Ring, The preparation and certification of a uranium reference material, Counc. Mineral Technol. Rep. M84, Randburg, 1983, 8 pp.
41. A.H. Orsi, Th. Whitworth III, W.D. Nowlin Jr., On the meridional extent and fronts of the Antarctic Circumpolar Current, Deep-Sea Res. 42 (5) (1995) 641-673.
42. M.P. Bacon, C.-A. Huh, A.P. Fleer, W.G. Deuser, Seasonality in the flux of natural radionuclides and plutonium in the deep Sargasso Sea, Deep-Sea Res. 32 (1985) 273-286.
43. R. Francois, M.P. Bacon, D.O. Suman, Th-230 profiling in deep-sea sediments: high resolution records of flux and dissolution of carbonate in the equatorial Atlantic during the last 24000 years, Paleoceanography 5 (1990) 761-787.
44. D.J. DeMaster, The supply and accumulation of silica in the marine environment, Geochim. Cosmochim. Acta 45 (1981) 1715-1732.
45. G. Fischer, D. Fuetterer, R. Gersonde, S. Honjo, D. Osterman, G. Wefer, Seasonal variability of particle flux in the Weddell Sea and its relation to ice cover, Nature 335 (1988) 426-428.
46. G. Wefer, G. Fischer, Annual primary production and export flux in the Southern Ocean from sediment trap data, Mar. Chem. 35 (1991) 597-614.
47. M.P. Bacon, R.F. Anderson, Distribution of thorium isotopes between dissolved and particulate forms in the deep sea, J. Geophys. Res. 87 (1982) 2045-2056.
48. G. Wefer, Particle flux in the ocean: effects of episodic production, in: W.H Berger, V. Smetacek, G. Wefer (Eds.), Productivity of the Ocean: Past and Present, Wiley, New York, 1989, pp. 139-154.
49. H.L. Anderson, R. Francois, S.B. Moran, Experimental evidence for differential adsorption of Th and Pa on different solid phases in seawater, EOS 73 (43S) (1992) 270.
50. 2 variations during the Pleistocene, Limnol. Oceanogr. 30 (1985) 699-712.
51. D.M. Nelson, P. Tréguer, M. Brzezinski, A. Leynaert, B. Quéguiner, Production and dissolution of biogenic silica in the ocean: Revised global estimates, comparison with regional data and relationship to biogenic sedimentation, Global Biochem. Cycles 9 (1995) 359-372.
52. M. Schlüter, M.M. Rutgers van der Loeff, O. Holby, G. Kuhn, Silica cycle in surface sediments of the South Atlantic, Deep-Sea Res., submitted.
53. M. Schlüter, Early diagenesis of orcanic carbon and opal in sediments of the southern and western Weddell Sea. Geochemical analyses and modelling, Ber. Polarforsch. 73 (1990) 156 pp.