How accurate are the 234Th based particulate residence times in the ocean?

Geophysical Research Letters

Volumn 26, Issue 5, 1999, Pages 619-622

  Guebuem, Kim ^a,b   Hussain, Najid ^a   Church, Thomas M ^a  

^a UNIVERSITY OF DELAWARE   (United States)

^b FLORIDA STATE UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

COLLOIDS; MATHEMATICAL MODELS; PARTICLES (PARTICULATE MATTER); RADIOACTIVE TRACERS; RADIOISOTOPES; THORIUM; ORGANIC CARBON; TRACE ELEMENTS;

PARTICULATE RESIDENCE TIMES; REACTIVE TRACE ELEMENTS;

OCEANOGRAPHY;

MODEL APPROACH; NATURALLY OCCURRING; OPEN OCEAN; PARTICULATE MATTER; PARTICULATE ORGANIC CARBON; REMOVAL RATE; RESIDENCE TIME; SURFACE OCEAN;

COLLOID; RESIDENCE TIME; SCAVENGING; SEAWATER; THORIUM;

EID: 0033084460     PISSN: 00948276     EISSN: None     Source Type: Journal    
DOI: 10.1029/1999gl900037     Document Type: Article

References (25)

1. 234Th measurements, Deep-Sea Res., 43, 1133-1154, 1996.
2. Baskaran, M., P. H. Santchi, G. Benoit, and B. Honeyman, Scavenging of thorium isotopes by colloids in seawater of the Gulf of Mexico, Geochim. Cosmochim. Acta, 56, 3375-3388, 1992.
3. 238U ratios in the Ocean, Earth Planet. Sci. Lett., 32, 277-296, 1969.
4. Bishop, J. K. B., Regional extremes in particulate matter composition and flux: effects on the chemistry of the ocean floor, in Productivity of the Ocean Present and Past, edited by W. H. Berger, V. S. Smetacek and G. Wefer, pp.117-137, John Wiley & Sons, New York, 1989.
5. Buesseler, K. O., Upper-ocean sediment traps provide an accurate record of particle flux? Nature, 353, 420-423, 1991.
6. 238U disequilibria, Deep-Sea Res., 39, 1115-1137, 1992.
7. Buesseler, K. O., A. F. Michaels, D. A. Siegel, and A. H. Knap, A three dimensional time-dependent approach to calibrating sediment trap fluxes, Global Biogeochemical Cycles, 8, 179-193, 1994.
8. Buesseler, K. O., The de-coupling of production and particulate export in the surface ocean, Global Biogeochemical Cycles, 12, 297-310, 1998.
9. 234Th as a tracer in the subtropical and equatorial Atlantic Ocean, Deep-Sea Res. II, in press, 1999.
10. 238U disequilibria within the California Current. Limnol. Oceanogr., 30, 22-33, 1985.
11. 238U disequilibria, Limnol. Oceanogr., 32, 189-200, 1987.
12. Cochran, J. K., C. Barnes, D. Achman, and D. J. Hirschber, Thorium-234/Uranium-238 disequilibrium as an indicator of scavenging rates and particulate organic carbon fluxes in the Northeast Water Polyna, Greenland, J. Geophys. Res., 100, 4399-4410, 1995.
13. Eppley, R. W. and B. J. Peterson, Particulate organic matter flux and planktonic new production in the deep ocean, Nature, 282, 677-680, 1979.
14. Eppley, R. W., New production: history, methods, problems, in Productivity of the Ocean: Present and Past, edited by W. H. Berger, U. S. Smetacet, and G. Wefer, pp. 85-97, John Wiley & Sons, New York, 1989.
15. 234Th disequilibria, Limnol. Oceanogr., 40 (3), 528-532, 1995.
16. Li, Y.-H., P. H. Santschi, A. Kaufman, L. K. Benninger, and H. W. Freely, Natural radionuclides in waters of the New York Bight, Earth Planet. Sci. Lett., 55, 217-228, 1981.
17. 234Th from a coastal sea: Funka Bay, Japan, Earth Planet. Sci. Lett., 47, 51-64, 1980.
18. 234Th disequilibria, Nature, 395, 221-223, 1992.
19. 234Th in continental shelf waters off New England: implication for the role of colloids in oceanic trace metal scavenging, J. Mar. Res., 51, 893-922, 1993.
20. 234Th scavenging in the eastern equatorial Pacific, Deep-Sea Res., 36, 1471-1489, 1989.
21. 234Th approach, Deep-Sea Res. II, 43, 1095-1132, 1996.
22. 234Th, Deep-Sea Res., 44, 457-478, 1997.
23. 238U decay series nuclides in the northern Arabian Sea: scavenging rates and cycling processes, Continental Shelf Research, 14, 251-265, 1994.
24. 238U disequilibria in the Black Sea, Deep-Sea Res., 38, S855-S873, 1991.
25. 234Th activity in the water column of Dabob Bay: particle scavenging, Limnol. Oceanogr., 37, 296-314, 1992.