Role of colloidal material in the removal of 234Th in the Canada basin of the Arctic Ocean

Deep-Sea Research Part I: Oceanographic Research Papers

Volumn 50, Issue 10-11, 2003, Pages 1353-1373

  Baskaran, M ^a   Swarzenski, P W ^b   Porcelli, D ^c  

^a WAYNE STATE UNIVERSITY   (United States)

^b U S GEOLOGICAL SURVEY   (United States)

^c UNIVERSITY OF OXFORD   (United Kingdom)

Author keywords

Arctic Ocean; DOM; Marine colloids; POC export; Residence times; Thorium scavenging; Ultrafiltration

Indexed keywords

COASTAL ZONES; COLLOIDS; NITRATES; PARTICLES (PARTICULATE MATTER); PHOSPHATES; SEDIMENTS;

PHASE PARTIONING; SECULAR EQUILIBRIUM;

OCEANOGRAPHY;

COLLOID; DISSOLVED ORGANIC MATTER; PARTICULATE ORGANIC CARBON; PHASE TRANSITION; RESIDENCE TIME; THORIUM;

ARCTIC OCEAN;

EID: 0344081197     PISSN: 09670637     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0967-0637(03)00140-7     Document Type: Article

References (59)

1. Alleau, Y., Colbert, D., Covert, P., Haley, B., Qiu, X., Collier, R., Falkner, K., Hales, B., Prahl, F., Gordon, L., 2001. Th234 applied to particle removal rates from the surface ocean: a mathematical treatment revisited. Geophysical Research Letters 28, 2855-2857.
2. Amon, R.M.W., Benner, R., 1994. Rapid cycling of high-molecular weight dissolved organic matter in the ocean. Nature 369, 549-552.
3. Bacon, M.P., Huh, C-A., Moore, R.M., 1989. Vertical profiles of some natural radionuclides over the Alpha Ridge, Arctic Ocean. Earth and Planetary Science Letters 95, 15-22.
4. 234Th measurements. Deep-Sea Research II 43, 1133-1154.
5. Barnes, P.W., Reimnitz, E., Fox, D., 1982. Ice rafting of fine-grained sediments, a sorting and transport mechanism, Beaufort Sea, Alaska. Journal of Sedimentary Petrology 52, 493-502.
6. Baskaran, M., Santschi, P.H., Benoit, G., Honeyman, B.D., 1992. Scavenging of Th isotopes by colloids in seawater of the Gulf of Mexico. Geochimica et Cosmochimica Acta 56, 3375-3388.
7. Baskaran, M., Murphy, D.J., Santschi, P.H., Orr, J.C., Schink, D.R., 1993. A method for rapid in-situ extraction of Th, Pb and Ra isotopes from large volumes of seawater. Deep-Sea Research I 40, 849-865.
8. 238U disequilibria in the Gulf of Mexico: the importance of organic matter and particle concentration. Continental Shelf Research 16, 353-380.
9. 238U disequilibria: spatial and temporal variations of scavenging rates within the Pacific Ocean. In: Burton, J.D., et al. (Ed.), Dynamic Processes in the Chemistry of the Upper Ocean. Plenum Publication Corp, New York, pp. 159-172.
10. 238U disequilibria. Deep-Sea Research 39, 1115-1137.
11. Buesseler, K.O., Andrews, J.A., Hartman, M.C., Belastock, R., Chai, F., 1995. Regional estimates of the export flux of particulate organic carbon derived from thorium-234 during the JGOFS EqPac Program. Deep-Sea Research II 42, 777-804.
12. Buffle, J., Perret, D., Newman, M., 1992. The use of filtration and ultrafiltration for size fractionation of aquatic particles, colloids, and macromolecules. In: Buffle, J., Van Leeuwen, H.P. (Eds.), Environmental Particles, IUPAC Environmental Chemistry Series., Vol. 1. Lewis Publication, New York, pp. 171-229.
13. 232Th in seawater. Earth and Planetary Science Letters 80, 241-251.
14. 238U disequilibria within the California Current. Limnology and Oceanography 30, 22-33.
15. Cochran, J.K., Hirschberg, D.J., Livingston, H.D., Buesseler, K.O., Key, R.M., 1995a. Natural and anthropogenic radionuclide distributions in the Nansen Basin, Arctic Ocean: scavenging rates and circulation time scales. Deep-Sea Research II 42, 1495-1517.
16. Cochran, J.K., Barnes, C., Achman, D., Hirschberg, D.J., 1995b. Thorium-234/Uranium-238 disequilibrium as an indicator of scavenging rates and particluate organic carbon fluxes in the northeast water polynya, Greenland. Journal of Geophysical Research 100, 4399-4410.
17. 234Th in the Gulf of Mexico. Marine Chemistry 74, 181-196.
18. Darby, D.A., Naidu, A.S., Mowatt, T.C., Jones, G.A., 1989. Sediment composition and sedimentary processes in the Arctic Ocean. In: Hermann, Y. (Ed.), The Arctic Seas. Van Nostrand-Reinhold, New York, 888pp.
19. Darby, D.A., Bischoff, J.F., Jones, G.A., 1997. Radiocarbon chronology of depositional regimes in the western Arctic Ocean. Deep-Sea Research II 44, 1745-1757.
20. Druffel, E.R.M., Williams, P.M., Suzuki, Y., 1989. Concentrations and radiocarbon signatures of dissolved organic-matter in the Pacific Ocean. Geophysical Research Letters 16, 991-994.
21. Edmonds, H.N., Moran, B.S., Hoff, J.A., Smith, J.N., Edwards, R.L., 1997. Protactinium-231 and thorium-230 abundances and high scavenging rates in the Western Arctic Ocean. Science 280, 405-407.
22. English, T.S., 1961, Some biological observations in the central North Polar Sea. Drift Sta. Alpha. 1957-1958. Arctic Institute of North America, Research Paper 13, 8-80.
23. Eppley, R.W., 1989. New production: history, methods, and problems. In: Berger, W.H., Smetecek, V., Wefer, O. (Eds.), Dahlem Workshop on Productivity of the Ocean: Present, and Past. Wiley, New York, pp. 85-97.
24. Farley, K.J., Morel, F.M.M., 1986. Role of coagulation in sedimentation kinetics. Environmental Science and Technology 19, 90-96.
25. 10Be in Arctic Ocean sediments. Earth and Planetary Science Letters 35, 199-204.
26. Guo, L., Coleman, C.H., Santschi, P.H., 1994. The distribution of colloidal and dissolved organic carbon in the Gulf of Mexico. Marine Chemistry 12, 119-132.
27. Guo, L., Santschi, P.H., Baskaran, M., 1997. Interaction of thorium isotopes with colloidal organic matter in oceanic environments. Colloids and Surfaces A 120, 255-271.
28. Gustafsson, O., Buesseler, K.O., Geyer, W.R., Moran, S.B., Gschwend, P.M., 1998. An assessment of the relative importance of horizontal and vertical transport of particle-reactive chemicals in the coastal ocean. Continental Shelf Research 18, 805-829.
29. Honeyman, B.D., Santschi, P.H., 1989. A Brownian-pumping model for trace metal scavenging: the importance of particle concentration. Journal of Marine Research 47, 950-995.
30. Honeyman, B.D., Balistieri, L.S., Murray, J.W., 1988. Oceanic trace metal scavenging: the importance of particle concentration. Deep-Sea Research 35, 227-246.
31. 234Th disequilibria. Limnology and Oceanography 40, 528-532.
32. Huh, C.-A., Pisias, N.G., Kelley, J.M., Maita, T.C., Grantz, A., 1997. Natural radionuclides and plutonium in sediments from the western Arctic Ocean: sedimentation rates and pathways of radionuclides. Deep-Sea Research II 44, 1725-1743.
33. 234Th based particulate residence times in the ocean? Geophysical Research Letters 26, 619-622.
34. Krishnamurthy, R.V., Machavaram, M., Baskaran, M., Brooks, J.M., Champ, M.A., 2001. Organic carbon flow in the Ob, Yenisey Rivers and Kara Sea of the Arctic region. Marine Pollution Bulletin 42, 726-732.
35. Ku, T.L., Broecker, W.S., 1967. Rates of sedimentation in the Arctic Ocean. In: Progress in Oceanography, vol. 4, Pergamon Press, Oxford & New York, pp. 95-104.
36. Lee, C., Murray, D.W., Barber, R.T., Buesseler, K.O., Dymond, J., Hedges, J.I., Honjo, S., Manganini, S.J., Marra, J., Moser, C., Peterson, M.L., Prell, W.L., Wakeham, S.G., 1998. Particulate organic carbon fluxes: compilation of results from the 1995 US JGOFS Arabian Sea Process Study. Deep-Sea Research II 45, 2489-2501.
37. 210Po in the Arctic Ocean and the implications for chemical modification of the Pacific water inflow. Earth and Planetary Science Letters 77, 285-292.
38. 234Th disequilibria. Nature 359, 221-223.
39. 234Th in continental shelf waters off New England: implications for the role of colloids in oceanic trace metal scavenging. Journal of Marine Research 51, 893-922.
40. Moran, S.B., Moore, R.M., 1989. The distribution of colloidal aluminum and organic carbon in Coastal and Open Ocean waters off Nova Scotia. Geochimica et Cosmochimica Acta 53,2519-2527.
41. 234Th as a tracer of scavenging and particle export in the Beaufort Sea. Continental Shelf Research 20, 153-167.
42. 238U disequilibrium in the central Arctic Ocean: implications for particulate organic carbon export. Deep-Sea Research II 44, 1593-1606.
43. 234Th scavenging in the eastern equatorial Pacific. Deep-Sea Research 36, 1471-1489.
44. Naidu, A.S., Mowatt, T.C., 1983. Sources and dispersal patterns of clay-minerals in surface sediments from the continental-shelf areas off Alaska. Geological Society of America Bulletin 94 (7), 841-854.
45. Nash, K.L., Choppin, G.R., 1980. Interaction of humic and fulvic acids with Th(IV). Journal of Inorganic Nuclear Chemistry 42, 1045-1050.
46. 234Th dynamics during a coastal phytoplankton bloom. Deep-Sea Research II 42, 257-273.
47. Opsahl, S., Benner, R., Amon, R.M.W., 1999. Major flux of terrigenous dissolved organic matter through the Arctic Ocean. Limnology and Oceanography 44, 2017-2023.
48. Quigley, M.S., Santschi, P.H., Hung, C.C., Quo, L.D., Honeyman, B.D., 2002. Importance of acid polysaccharides for Th-234 complexation to marine organic matter. Limnology and Oceanography 47 (2), 367-377.
49. Reimnitz, E.M., Barnes, P.W., Weber, W.S., 1993. Particulate matter in pack ice of the Beaufort Gyre. Journal of Glaciology 39, 186-198.
50. Rich, J., Gosselin, M., Sherr, E., Sherr, B., Kirchman, D.L., 1997. High bacterial production, uptake and concentrations of dissolved organic matter in the Central Arctic Ocean. Deep-Sea Research II 44, 1645-1663.
51. Santschi, P.H., Guo, L., Baskaran, M., Trumbore, S., Southon, J., Bianchi, T.S., Honeyman, B.D., Cifuentes, L., 1995. Isotopic evidence for the contemporary origin of high-molecular weight organic matter in oceanic environments. Geochimica et Cosmochimica Acta 59, 625-631.
52. Santschi, P.H., Guo, L., Walsh, I.D., Quigley, M.S., Baskaran, M., 1999. Boundary exchange and scavenging of radio-nuclides in continental margin waters of the Middle Atlantic Bight: implications for organic carbon fluxes. Continental Shelf Research 19, 609-636.
53. Swarzenski, P.W., McKee, B.A., Booth, J.G., 1995. Uranium geochemistry on the Amazon shelf: chemical phase partitioning and cycling across a salinity gradient. Geochimica et Cosmochimica Acta 59, 7-18.
54. Swift, J.H., Jones, E.P., Aagaard, K., Carmack, E.C., Hingston, M., Macdonald, R.W., Mclaughlin, F.A., Perkin, R.G., 1997. Waters of the Makarov and Canada basins. Deep-Sea Research II 44, 1503-1523.
55. Turekian, K.K., 1977. The fate of metals in the oceans. Geochimica et Cosmochimica Acta 41, 1139-1144.
56. Wells, M.L., Goldberg, E.D., 1992. Colloid aggregation in seawater. Marine Chemistry 41, 353-358.
57. Wen, L.S., Stordal, M.C., Tang, D.G., Gill, G.A., Santschi, P.H., 1996. An ultraclean cross-flow ultrafiltration technique for the study of trace metal phase speciation in seawater. Marine Chemisty 55, 129-152.
58. Wheeler, P.A., Watkins, J.M., Hansing, R.L., 1997. Nutrients, organic carbon and organic nitrogen in the upper water column of the Arctic Ocean: implications for the sources of dissolved organic carbon. Deep-Sea Research II 44, 1571-1592.
59. Wheeler, P.A., Gosselin, M., Sherr, E., Thibault, D., Kirchman, D.L., Benner, R., Whitledge, T.E., 1996. Active cycling of organic carbon in the central Artic Ocean. Nature 380, 697-699.