Radionuclide tracers of sediment-water interactions on the Amazon shelf

Continental Shelf Research

Volumn 16, Issue 5-6, 1996, Pages 645-665

  Moore, Willard S ^a   DeMaster, David J ^b   Smoak, Joseph M ^a,b   McKee, Brent A ^c   Swarzenski, Peter W ^c  

^a UNIVERSITY OF SOUTH CAROLINA   (United States)

^b NORTH CAROLINA STATE UNIVERSITY   (United States)

^c Louisiana Universities Mar C   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

RADIOISOTOPE; TRACER; WATER;

CONTINENTAL SHELF; CONTINENTAL SHELVES; RADIOISOTOPES; RADIONUCLIDE; SEDIMENT-WATER EXCHANGES; SEDIMENT/WATER INTERACTION; TRACER; TRACERS;

BRAZIL; CONTINENTAL SHELF; ENVIRONMENT; RIVER; SEDIMENT;

ATLANTIC, AMAZON CONTINENTAL SHELF; ATLANTIC, AMAZON SHELF;

EID: 0029731641     PISSN: 02784343     EISSN: None     Source Type: Journal    
DOI: 10.1016/0278-4343(95)00049-6     Document Type: Article

References (47)

1. Aller R. C., N. E. Blair, Q. Xia and P. D. Rude (1996) Remineralization rates, recycling and storage of carbon in Amazon shelf sediments. Continental Shelf Research, 16, 753-786..
2. 238U disequilibrium. Earth and Planetary Science Letters, 67, 308-318.
3. Baskaran M., D. J. Murphy, P. H. Santschi, J. C. Orr and D. R. Schink (1993) A method for rapid in situ extraction and laboratory determination of thorium, lead and radium isotopes from large volumes of seawater. Deep-Sea Research, 40, 849-865.
4. Bruce J. G. (1983) Comparison of eddies off the north Brazilian and Somali coasts. Journal of Physical Oceanography, 14, 825-832.
5. Carroll J. and W. S. Moore (1994) Uranium removal during low discharge in the Ganges-Brahmaputra mixing zone. Geochimica et Cosmochimica Acta, 58, 4987-4995.
6. 232Th in seawater. Earth and Planetary Science Letters, 80, 241-251.
7. DeMaster D. J., S. A. Kuehl and C. A. Nittrouer (1986) Effects of suspended sediments on geochemical processes near the mouth of the Amazon River: examples of biological silica uptake and the fate of particle-reactive elements. Continental Shelf Research, 6, 107-125.
8. DeMaster D. J., W. S. Moore, B. A. McKee, D. M. Nelson, W. J. Showers and W. O. Smith (1991) Geochemical processes occurring in the waters at the Amazon River/Ocean boundary. Oceanography, 4, 15-20.
9. DeMaster D. J. and R. H. Pope (1996) Nutrient dynamics in Amazon shelf waters: results from AmasSeds. Continental Shelf Research, 16, 263-289.
10. 226Ra as a geochronometer on the Amazon continental shelf. Marine Geology, 125, 329-350.
11. Fox L. E., S. L. Sager and S. C. Wofsy (1985) The chemical control of soluble phosphorus in the Amazon River and estuary. Geochimica et Cosmochimica Acta, 50, 783-794.
12. Froelich P. N. (1988) Kinetic control of dissolved phosphate in natural rivers and estuaries: a primer on the phosphate buffer mechanism. Limnology and Oceanography, 33, 649-668.
13. Honeyman B. D. and P. H. Santschi (1989) A Brownian-pumping model for oceanic trace-metal scavenging: evidence from thorium isotopes. Journal of Marine Research, 47 951-992.
14. Jaeger J. and C. A. Nittrouer (1995) Tidal controls on the formation of fine-scale sedimentary strata near the Amazon River mouth. Marine Geology, 125, 259-281.
15. Johns W. E., T. N. Lee, F. A. Schott, R. J. Zantopp and R. H. Evans (1990) The North Brazil Current retroflection: seasonal structure and eddy variability. Journal Geophysical Research, 95, 22,103-22,120.
16. 228 Ra in the Amazon River estuary. Journal of Geophysical Research, 90, 6995-7004.
17. Kineke G. C. (1993) Fluid muds on the Amazon continental shelf. Ph.D. Dissertation, University of Washington, 259 pp.
18. Kineke G. C. and R. W. Sternberg (1995) Distribution of fluid muds on the Amazon continental shelf. Marine Geology, 125, 193-233.
19. Kineke G. C., R. W. Sternberg, D. A. Cacchione, K. Kranck and D. E. Drake (1991) Distribution and characteristics of suspended sediment on the Amazon shelf. Oceanography, 4, 21-26.
20. Kineke G. C., R. W. Sternberg, J. H. Trowbridge and W. R. Geyer (1996) Fluid-mud processes on the Amazon continental shelf. Continental Shelf Research, 16, 667-696.
21. 14C in marine suspended phases. Analytica Chimica Acta, 83, 143-156.
22. Kuehl S. A., D. J. DeMaster and C. A. Nittrouer (1986) Nature of sediment accumulation on the Amazon continental shelf. Continental Shelf Research, 6, 209-225.
23. Kuehl S. A., C. A. Nittrouer, M. A. Allison, L. E. C. Faria, D. A. Dukat, J. M. Jaeger, T. D. Pacioni, A. G. Figuciredo and E. C. Underkoffler (1996) Sediment deposition, accumulation and seabed dynamics in an energetic fine-grained coastal environment. Continental Shelf Research, 16, 787-815.
24. 226Ra from river-borne sediments in the Hudson Estuary. Earth and Planetary Science Letters, 43, 343-350.
25. Limeburner R. and R. Beardsley (1992) Lagrangian flow observations of the Amazon River discharge into the North Atlantic. EOS Transactions of the American Geophysical Union, 73, 277.
26. Limeburner R., R. C. Beardsley, I. D. Soares, S. J. Lentz and J. Candela (1995) Lagrangian flow observations of the Amazon River discharge into the North Atlantic. Journal of Geophysical Research, 100, 2401-2415.
27. McKee B. A. (1986) The fate of particle-reactive radionuclides on the Amazon and Yangtze continental shelves. Ph.D. Thesis, North Carolina State University, 240 pp.
28. 238 U disequilibrium to examine the fate of particle-reactive species on the Yangtze continental shelf. Earth and Planetary Science Letters, 68, 431-442.
29. McKee B. A., D. J. DeMaster and C. A. Nittrouer (1986) Temporal variability in the partitioning of thorium between dissolved and particulate phases on the Amazon shelf: implications for the scavenging of particle-reactive species. Continental Shelf Research, 6, 87-106.
30. McKee B. A., D. J. DeMaster and C. A. Nittrouer (1987) Uranium geochemistry on the Amazon shelf: evidence for uranium release from bottom sediments. Geochimica et Cosmochimica Acta, 51, 2779-2786.
31. McKee B. A., D. J. DeMaster and C. A. Nittrouer (in press) Kinetics of thorium removal from Amazon shelf waters: the role of colloidal-size particulates. Geochimica et Cosmochimica Acta.
32. Mackin J. E. and R. C. Aller (1986) The effects of clay mineral reactions on dissolved aluminium distributions in sediments and waters of the Amazon continental shelf. Continental Shelf Research, 6, 245-262.
33. Meade, R. H., T. Dunne, J. E. Richey, U. D. Santos and E. Salati (1985) Storage and remobilization of suspended sediment in the lower Amazon River of Brazil. Science, 228, 488-490.
34. Moore W. S. (1984) Radium isotope measurements using germanium detectors. Nuclear Instruments and Methods, 223, 407-411.
35. Moore W. S. (1992) Radionuclides of the uranium and thorium decay series in the estuarine environment. In: Uranium-series disequilibrium: application to earth, marine and environmental sciences, M. Ivanovich and R. Harmon, editors, Clarendon Press, Oxford.
36. 224Ra in coastal waters using a delayed coincidence counter. Journal of Geophysical Research.
37. Moore W. S., H. Astwood and C. Lindstrom (1995) Radium isotopes in the Amazon mixing zonc. Geochimica et Cosmochimica Acta, 59.
38. 210Pb removal with organic carbon fluxes in the Pacific Ocean. Nature, 331, 339-341.
39. 228Ra, salinity and silica. Journal of Geophysical Research, 91, 2574-2580.
40. Moore W. S. and J. F. Todd (1993) Radium isotopes in the Orinoco estuary and eastern Caribbean Sea. Journal of Geophysical Research, 98, 2233-2244.
41. Muller-Karger F. E., C. R. McClain and P. L. Richardson (1988) The dispersal of the Amazon water. Nature, 333, 56-59.
42. Richardson P. L., G. E. Hufford and R. Limeburner (1994) North Brazil Current retroflection eddies. Journal of Geophysical Research, 99, 5081-5093.
43. Shaw T. J., E. R. Sholkovitz and G. Klinkhammer (1994) Redox dynamics in the Chesapeake Bay: the effect of sediment/water uranium exchange. Geochimica et Cosmochimica Acta, 58, 2985-2993.
44. 210Pb on the Amazon continental shelf. Geochimica et Cosmochimica Acta.
45. Swarzenski P. W., B. A. McKee and J. G. Booth (1991) Uranium geochemistry of the Amazon shelf: seasonal difference in source functions and dissolved/colloidal partitioning of uranium isotopes. EOS Transactions of the American Geophysical Union, 72, 64.
46. Swarzenski P. W., B. A. McKee and J. G. Booth (1995) Uranium geochemistry on the Amazon shelf: chemical phase partitioning and cycling across a salinity gradient. Geochimica et Cosmochimica Acta, 59, 7-18.
47. Trowbridge J. H. and G. C. Kineke (1994) Structure and dynamics of fluid muds on the Amazon continental shelf. Journal of Geophysical Research, 99, 865-874.