An introduction to the application and future use of 234Th in aquatic systems

Marine Chemistry

Volumn 100, Issue 3-4 SPEC. ISS., 2006, Pages 166-189

  Waples, James T ^a   Benitez Nelson, Claudia ^b   Savoye, Nicolas ^c   Rutgers van der Loeff, Michiel ^d   Baskaran, Mark ^e   Gustafsson, Örjan ^f  

^a UNIVERSITY OF WISCONSIN MILWAUKEE   (United States)

^b UNIVERSITY OF SOUTH CAROLINA   (United States)

^c VRIJE UNIVERSITEIT BRUSSEL   (Belgium)

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

^e WAYNE STATE UNIVERSITY   (United States)

^f STOCKHOLM UNIVERSITY   (Sweden)

Author keywords

234Th; Aquatic tracers; Particle dynamics; Radiochemistry

Indexed keywords

FRESHWATER SEDIMENT; MARINE ECOSYSTEM; PARTICLE PHENOMENA; RADIONUCLIDE; THORIUM ISOTOPE; TRACE ELEMENT;

EID: 33646337912     PISSN: 03044203     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.marchem.2005.10.011     Document Type: Article

References (288)

1. Alexander C.R., and Venherm C. Modern sedimentary processes in the Santa Monica, California continental margin: sediment accumulation, mixing and budget. Marine Environmental Research 56 1-2 (2003) 177-204
2. Alldredge A.L., and Jackson G.A. Aggregation in marine systems. Deep-Sea Research 42 (1995) 1-8
3. Aller R.C. Experimental studies of changes produced by deposit feeders on pore water, sediment, and overlying water chemistry. American Journal of Science 278 (1978) 1185-1234
4. 238U disequilibrium in near-shore sediment: particle reworking and diagenetic timescales. Earth and Planetary Science Letters 29 (1976) 37-50
5. 238U disequilibrium. Earth and Planetary Science Letters 67 (1984) 308-318
6. 238U disequilibrium. Earth and Planetary Science Letters 47 (1980) 161-175
7. Aller R.C., Heilbrun C., Panzeca C., Zhu Z.B., and Baltzer F. Coupling between sedimentary dynamics, early diagenetic processes, and biogeochemical cycling in the Amazon-Guianas mobile mud belt: coastal French Guiana. Marine Geology 208 2-4 (2004) 331-360
8. Allison M.A., Nittrouer C.A., and Kineke G.C. Seasonal sediment storage on mudflats adjacent to the Amazon river. Marine Geology 125 3-4 (1995) 303-328
9. Amiel D., Cochran J.K., and Hirschberg D.J. Th-234/U-238 disequilibrium as an indicator of the seasonal export flux of particulate organic carbon in the North Water. Deep-Sea Research II 49 22-23 (2002) 5191-5209
10. 238U activity ratios in Pacific Ocean bottom waters. Earth and Planetary Science Letters 21 (1974) 342-344
11. Anschutz P., Jorissen F.J., Chaillou G., Abu-Zied R., and Fontanier C. Recent turbidite deposition in the eastern Atlantic: early diagenesis and biotic recovery. Journal of Marine Research 60 6 (2002) 835-854
12. Assinder D.J., Mudge S.M., and Bourne G.S. Radiological assessment of the Ribble Estuary: 1. Distribution of radionuclides in surface sediments. Journal of Environmental Radioactivity 36 1 (1997) 1-19
13. Bacon M.P., and Anderson R.F. Distribution of thorium isotopes between dissolved and particulate forms in the deep sea. Journal of Geophysical Research 87 (1982) 2045-2056
14. Bacon M.P., and Rutgers van der Loeff M.M. Removal of Th-234 by Scavenging in the Bottom Nepheloid Layer of the Ocean. Earth and Planetary Science Letters 92 2 (1989) 157-164
15. Bacon M.P., Huh C.A., Fleer A.P., and Deuser W.G. Seasonality in the flux of natural radionuclides and plutonium in the deep Sargasso Sea. Deep-Sea Research 32 (1985) 273-286
16. Bacon M.P., Huh C.A., and Moore R.M. Vertical profiles of some natural radionuclides over the Alpha Ridge, Arctic Ocean. Earth and Planetary Science Letters 95 1 (1989) 15-22
17. Bacon M.P., Belastock R.A., and Bothner M.H. 210Pb balance and implications for particle transport on the continental shelf, U.S. Middle Atlantic Bight. Deep-Sea Research. Part II 41 2-3 (1994) 511-535
18. Bacon M.P., Cochran J.K., Hirschberg D., Hammar T.R., and Fleer A.P. Export flux of carbon at the equator during the EqPac time-series cruises estimated from Th-234 measurements. Deep-Sea Research II 43 4-6 (1996) 1133-1153
19. Barbeau K., Kujawinski E.B., and Moffett J.W. Remineralization and recycling of iron, thorium and organic carbon by heterotrophic marine protists in culture. Aquatic Microbial Ecology 24 1 (2001) 69-81
20. Baskaran M. Scavenging of thorium isotopes in the Arctic regions: implications for the fate of particle-reactive pollutants. Marine Pollution Bulletin 42 1 (2001) 16-22
21. Baskaran M., and Santschi P.H. The role of particles and colloids in the transport of radionuclides in coastal environments of Texas. Marine Chemistry 43 1-4 (1993) 95-114
22. Baskaran M., Krishnaswami S., and Bhandari N. The geochemistry of uranium and thorium isotopes in the salt lakes and adjacent groundwaters of Rajasthan. Journal of the Geological Society of India 27 (1986) 90-101
23. Baskaran M., Santschi P.H., Benoit G., and Honeyman B.D. Scavenging of thorium isotopes by colloids in seawater of the Gulf of Mexico. Geochimica et Cosmochimica Acta 56 9 (1992) 3375-3388
24. Baskaran M., Santschi P.H., Guo L.D., Bianchi T.S., and Lambert C. Th-234:U-238 disequilibria in the Gulf of Mexico: the importance of organic matter and particle concentration. Continental Shelf Research 16 3 (1996) 353-380
25. Baskaran M., Swarzenski P.W., and Porcelli D. Role of colloidal material in the removal of Th-234 in the Canada basin of the Arctic Ocean. Deep-Sea Research I 50 10-11 (2003) 1353-1373
26. Benitez-Nelson C.R., Buesseler K.O., and Crossin G. Upper ocean carbon export, horizontal transport, and vertical eddy diffusivity in the southwestern Gulf of Maine. Continental Shelf Research 20 6 (2000) 707-736
27. Benitez-Nelson C., Buesseler K.O., Karl D.M., and Andrews J. A time-series study of particulate matter export in the North Pacific Subtropical Gyre based on Th-234 : U-238 disequilibrium. Deep-Sea Research I 48 12 (2001) 2595-2611
28. Benner R. Chemical composition and reactivity. In: Hansell D., and Carlson C. (Eds). Biogeochemistry of Marine Dissolved Organic Matter (2002), Academic Press, New York 59-90
29. Bentley S.J., and Nittrouer C.A. Environmental influences on the formation of sedimentary fabric in a fine-grained carbonate-shelf environment: Dry Tortugas, Florida Keys. Geo-Marine Letters 17 4 (1997) 268-275
30. Bentley S.J., and Nittrouer C.A. Physical and biological influences on the formation of sedimentary fabric in an oxygen-restricted depositional environment: Eckernforde Bay, southwestern Baltic Sea. Palaios 14 6 (1999) 585-600
31. Bentley S.J., Nittrouer C.A., and Sommerfield C.K. Development of sedimentary strata in Eckernforde Bay, southwestern Baltic Sea. Geo-Marine Letters 16 3 (1996) 148-154
32. 238U ratios in the ocean. Earth and Planetary Science Letters 5 (1969) 483-491
33. Biddanda B., and Cotner J. Love handles in aquatic ecosystems: the role of dissolved organic carbon drawdown, resuspended sediments, and terrigenous inputs in the carbon balance of Lake Michigan. Ecosystems 5 (2002) 431-445
34. Bidigare R.R., et al. Influence of a cyclonic eddy on microheterotroph biomass and carbon export in the lee of Hawaii. Geophysical Research Letters 30 6 (2003)
35. Bollhofer A., et al. High-resolution Pb-210 dating of Lake Constance sediments-stable lead in Lake Constance. Environmental Geology 24 4 (1994) 267-274
36. Bou-Rabee F., and Bem H. Natural radionuclides and cesium-137 content in Arabian Gulf bottom sediments. Journal of Radioanalytical and Nuclear Chemistry 222 1-2 (1997) 219-221
37. Bowles M.C., and Livingston H. Assessing the ocean's role in the global carbon cycle: the joint global ocean flux study. McGraw-Hill's Yearbook of Science and Technology (1997)
38. Brewer P.G., Nozaki Y., Spencer D., and Fleer A.P. Sediment trap experiments in the deep North Atlantic: isotopic and elemental fluxes. Journal of Marine Research 38 4 (1980) 703-728
39. Broecker W.S., and Peng T.-H. Tracers in the Sea (1982), Eldigio Press, Palisades, NY
40. Broecker W.S., Kaufman A., and Trier R.M. The residence time of thorium in surface sea water and its implication regarding the rate of reactive pollutants. Earth and Planetary Science Letters 20 (1973) 35-44
41. Buesseler K.O. Do upper-ocean sediment traps provide an accurate record of particle-flux. Nature 353 6343 (1991) 420-423
42. Buesseler K.O. The decoupling of production and particulate export in the surface ocean. Global Biogeochemical Cycles 12 2 (1998) 297-310
43. Buesseler K.O., Bacon M.P., Cochran J.K., and Livingston H.D. Carbon and nitrogen export during the Jgofs North-Atlantic Bloom Experiment estimated from Th-234u-238 Disequilibria. Deep-Sea Research I 39 7-8A (1992) 1115-1137
44. Buesseler K.O., Michaels A.F., Siegel D.A., and Knap A.H. A 3-dimensional time-dependent approach to calibrating sediment trap fluxes. Global Biogeochemical Cycles 8 2 (1994) 179-193
45. Buesseler K.O., Andrews J.A., Hartman M.C., Belastock R., and Chai F. Regional estimates of the export flux of particulate organic-carbon derived from Th-234 during the Jgofs eqpac program. Deep-Sea Research II 42 2-3 (1995) 777
46. Buesseler K.O., et al. An intercomparison of cross-flow filtration techniques used for sampling marine colloids: overview and organic carbon results. Marine Chemistry 55 (1996) 1-31
47. Buesseler K., et al. Upper ocean export of particulate organic carbon in the Arabian Sea derived from thorium-234. Deep-Sea Research II 45 10-11 (1998) 2461-2487
48. Buesseler K.O., et al. A comparison of the quantity and composition of material caught in a neutrally buoyant versus surface-tethered sediment trap. Deep-Sea Research I 47 2 (2000) 277-294
49. Buesseler K.O., et al. Upper ocean export of particulate organic carbon and biogenic silica in the Southern Ocean along 170 degrees W. Deep-Sea Research II 48 19-20 (2001) 4275-4297
50. Buesseler K.O., Andrews J.E., Pike S.M., and Charette M.A. The effects of iron fertilization on carbon sequestration in the Southern Ocean. Science 304 5669 (2004) 414-417
51. 234Th as a POC flux proxy. Marine Chemistry 100 (2006) 213-233 (this volume)
52. Buesseler, K.O. Antia A.N., Chen, M., Fowler, S.W., Gardner, W.D., Gustaffson, Ö., Harada, K., Michaels, A.F., Rutgers van der Loeff, M., Sarin, M., Steinberg, D.K., Trull, T., submitted for publication. Estimating upper ocean particle fluxes with sediment traps: a progress report. Progress in Oceanography.
53. 234Th ratio of marine particles. Deep-Sea Research I 47 (2000) 103-120
54. Cai P.H., Huang Y.P., Chen M., Liu G.S., and Qiu Y.S. Export of particulate organic carbon estimated from Th-234-U-238 disequilibria and its temporal variation in the South China Sea. Chinese Science Bulletin 46 20 (2001) 1722-1726
55. Cai P.H., et al. New production based on Ra-228-derived nutrient budgets and thorium-estimated POC export at the intercalibration station in the South China Sea. Deep-Sea Research I 49 1 (2002) 53-66
56. Charette M.A., and Moran S.B. Rates of particle scavenging and particulate organic carbon export estimated using Th-234 as a tracer in the subtropical and equatorial Atlantic Ocean. Deep-Sea Research II 46 5 (1999) 885-906
57. Charette M.A., Moran S.B., and Bishop J.K.B. Th-234 as a tracer of particulate organic carbon export in the subarctic northeast Pacific Ocean. Deep-Sea Research II 46 11-12 (1999) 2833-2861
58. Charette M.A., Moran S.B., Pike S.M., and Smith J.N. Investigating the carbon cycle in the Gulf of Maine using the natural tracer thorium 234. Journal of Geophysical Research, [Oceans] 106 C6 (2001) 11553-11579
59. Chen M., et al. Biological productivity and carbon cycling in the Arctic Ocean. Chinese Science Bulletin 47 12 (2002) 1037-1040
60. Clegg S.L., and Whitfield M. A generalized-model for the scavenging of trace-metals in the open ocean: 2. Thorium scavenging. Deep-Sea Research I 38 1 (1991) 91-120
61. Clegg S.L., and Whitfield M. Application of a generalized scavenging model to time-series Th-234 and particle data obtained during the Jgofs North-Atlantic bloom experiment. Deep-Sea Research I 40 8 (1993) 1529-1545
62. Clegg S.L., Bacon M.P., and Whitfield M. Application of a generalized scavenging model to thorium isotope and particle data at equatorial and high-latitude sites in the Pacific-Ocean. Journal of Geophysical Research, [Oceans] 96 C11 (1991) 20655-20670
63. Chen M., Huang Y.P., Cai P.G., and Guo L.D. Particulate organic carbon export fluxes in the Canada Basin and Bering Sea as derived from Th-234/U-238 disequilibria. Arctic 56 1 (2003) 32-44
64. 238U disequilibria within the California current. Limnology and Oceanography 30 (1985) 22-33
65. 238U disequilibria. Limnology and Oceanography 32 (1987) 189-200
66. Cochran J.K., and Aller R.C. Particle reworking in sediments from the New York Bight Apex: evidence from. 234 Th/238 U disequilibrium. Estuarine and Coastal Marine Science 9 (1979) 739-747
67. Cochran J.K., and Masqué P. Short-lived U/Th series radionuclides in the ocean: tracers for scavenging rates, export fluxes and particle dynamics. In: Bourdon B., Henderson G.M., Lundstrom C.C., and Turner S.P. (Eds). Uranium-Series Geochemistry. Reviews in Mineralogy and Geochemistry vol. 52 (2003) 461-492
68. Cochran J.K., Buesseler K.O., Bacon M.P., and Livingston H.D. Thorium isotopes as indicators of particle dynamics in the upper ocean- results from the Jgofs North-Atlantic Bloom Experiment. Deep-Sea Research I 40 8 (1993) 1569-1595
69. Cochran J.K., Barnes C., Achman D., and Hirschberg D.J. Thorium-234/Uranium-238 disequilibrium as an indicator of scavenging rates and particulate organic-carbon fluxes in the Northeast Water Polynya, Greenland. Journal of Geophysical Research, [Oceans] 100 C3 (1995) 4399-4410
70. Cochran J.K., Frignani M., Hirschberg D.J., and Barnes C. Thorium isotopes as indicators of scavenging rates in the Venice Lagoon. Marine and Freshwater Research 46 1 (1995) 215-221
71. Cochran J.K., et al. Short-lived thorium isotopes (Th-234, Th-228) as indicators of POC export and particle cycling in the Ross Sea, Southern Ocean. Deep-Sea Research II 47 15-16 (2000) 3451-3490
72. Cole J.J. Aquatic microbiology for ecosystem scientists: new and recycled paradigms in ecological microbiology. Ecosystems 2 (1999) 215-225
73. Coppola L., Roy-Barman M., Wassmann P., Mulsow S., and Jeandel C. Calibration of sediment traps and particulate organic carbon export using Th-234 in the Barents Sea. Marine Chemistry 80 1 (2002) 11-26
74. Corbett D.R., McKee B., and Duncan D. An evaluation of mobile mud dynamics in the Mississippi River deltaic region. Marine Geology 209 1-4 (2004) 91-112
75. Crookes W. Radio-activity of uranium. Proceedings of the Royal Society of London 66 1899-1900 (1900) 409-423
76. Dai M.H., and Benitez-Nelson C.R. Colloidal organic carbon and Th-234 in the Gulf of Maine. Marine Chemistry 74 2-3 (2001) 181-196
77. Del Giorgio P.A., Cole J.J., and Peters R.H. Linking planktonic biomass and metabolism to net gas fluxes in northern temperate lakes. Ecology 80 (1999) 1422
78. 210Pb. Marine Geology 66 (1985) 133-148
79. DeMaster D.J., Kuehl S., and Nittrouer C.A. Effects of suspended sediments on geochemical processes near the mouth of the Amazon River: examination of biological silica uptake and the fate of particle-reactive elements. Continental Shelf Research 6 1/2 (1986) 107-125
80. DeMaster D.J., Brewster D.C., McKee B.A., and Nittrouer C.A. Rates of particle scavenging, sediment reworking, and longitudinal ripple formation at the hebble site based on measurements of Th-234 and Pb-210. Marine Geology 99 3-4 (1991) 423-444
81. DeMaster D.J., Pope R.H., Levin L.A., and Blair N.E. Biological mixing intensity and rates of organic-carbon accumulation in North-Carolina slope sediments. Deep-Sea Research, Part II: Topical Studies in Oceanography 41 4-6 (1994) 735-753
82. Demopoulos A.W.J., Smith C.R., DeMaster D.J., and Fornes W.L. Evaluation of excess Th-234 activity in sediments as an indicator of food quality for deep-sea deposit feeders. Journal of Marine Research 61 2 (2003) 267-284
83. 7Be in Lake Geneva. Earth and Planetary Science Letters 93 3-4 (1989) 345-358
84. Druffel E.R.M., Williams P.M., Bauer J.E., and Ertel J.R. Cycling of dissolved and particulate organic matter in the open ocean. Journal of Geophysical Research 97 (1992) 15639-15659
85. Dukat D.A., and Kuehl S.A. Non-steady-state Pb-210 flux and the use of Ra-228/Ra-226 as a geochronometer on the Amazon Continental-Shelf. Marine Geology 125 3-4 (1995) 329-350
86. Dunne J.P., Murray J.W., Young J., Balistrieri L.S., and Bishop J. Th-234 and particle cycling in the central equatorial Pacific. Deep-Sea Research II 44 9-10 (1997) 2049-2083
87. Dunne J.P., Murray J.W., Rodier M., and Hansell D.A. Export flux in the western and central equatorial Pacific: zonal and temporal variability. Deep-Sea Research I 47 5 (2000) 901-936
88. Eckman J.E., et al. Performance of cages as large animal-exclusion devices in the deep sea. Journal of Marine Research 59 1 (2001) 79-95
89. Edwards R.L., Gallup C.D., and Cheng H. Uranium-series dating of marine and lacustrine carbonates. Reviews in Mineralogy and Geochemistry 52 (2003) 363-405
90. Fahnenstiel G.L., Lang G.A., Nalepa T.F., and Johengen T.H. Effects of zebra mussel (Dreissena polymorpha) colonization on water quality parameters in Saginaw Bay, Lake Huron. Journal of Great Lakes Research 211 (1995) 435-448
91. Feng H., Cochran J.K., Hirschberg D.J., and Wilson R.E. Small-scale spatial variations of natural radionuclide and trace metal distributions in sediments from the Hudson River estuary. Estuaries 21 2 (1998) 263-280
92. Feng H., Cochran J.K., and Hirschberg D.J. Th-234 and Be-7 as tracers for the sources of particles to the turbidity maximum of the Hudson River estuary. Estuarine, Coastal and Shelf Science 49 5 (1999) 629-645
93. Feng H., Cochran J.K., and Hirschberg D.J. Th-234 and Be-7 as tracers for the transport and dynamics of suspended particles in a partially mixed estuary. Geochimica et Cosmochimica Acta 63 17 (1999) 2487-2505
94. Feng H., Cochran J.K., and Hirschberg D.J. Th-234 and Be-7 as tracers for transport and sources of particle-associated contaminants in the Hudson River Estuary. Science of the Total Environment 238 (1999) 401-418
95. Fisher N.S., Teyssie J.L., Krishnaswami S., and Baskaran M. Accumulation of Th, Pb, U, and Ra in marine-phytoplankton and its geochemical significance. Limnology and Oceanography 32 1 (1987) 131-142
96. Fisher N.S., Cochran J.K., Krishnaswami S., and Livingston H.D. Predicting the oceanic flux of radionuclides on sinking biogenic debris. Nature 335 (1988) 622-625
97. Fornes W.L., DeMaster D.J., Levin L.A., and Blair N.E. Bioturbation and particle transport in Carolina slope sediments: a radiochemical approach. Journal of Marine Research 57 2 (1999) 335-355
98. Fornes W.L., DeMaster D.J., and Smith C.R. A particle introduction experiment in Santa Catalina Basin sediments: testing the age-dependent mixing hypothesis. Journal of Marine Research 59 1 (2001) 97-112
99. Foster J.M., and Shimmield G.B. Th-234 as a tracer of particle flux and POC export in the northern North Sea during a coccolithophore bloom. Deep-Sea Research II 49 15 (2002) 2965-2977
100. Friedrich J., and Rutgers van der Loeff M.M. A two-tracer (Po-210-Th-234) approach to distinguish organic carbon and biogenic silica export flux in the Antarctic Circumpolar Current. Deep-Sea Research I 49 1 (2002) 101-120
101. Frignani M., Courp T., Cochran J.K., Hirschberg D., and Codina L.V.I. Scavenging rates and particle characteristics in and near the Lacaze-Duthiers submarine canyon, northwest Mediterranean. Continental Shelf Research 22 15 (2002) 2175-2190
102. Fuller C.C., van Geen A., Baskaran M., and Anima R. Sediment chronology in San Francisco Bay, California, defined by Pb-210, Th-234, Cs-137, and Pu-239,Pu-240. Marine Chemistry 64 1-2 (1999) 7-27
103. Gardner W.D. Sediment trap sampling in surface waters. In: Hanson R.B., Ducklow H.W., and Field J.G. (Eds). The Changing Ocean Carbon Cycle: A Midterm Synthesis of the Joint Global Ocean Flux Study (2000), Cambridge University Press 240-281
104. Gerino M., et al. Comparison of different tracers and methods used to quantify bioturbation during a spring bloom: 234-thorium, luminophores and chlorophyll a. Estuarine, Coastal and Shelf Science 46 4 (1998) 531-547
105. German C.R., and Sparks R.S.J. Particle recycling in the tag hydrothermal plume. Earth and Planetary Science Letters 116 1-4 (1993) 129-134
106. German C.R., Fleer A.P., Bacon M.P., and Edmond J.M. Hydrothermal scavenging at the Mid-Atlantic Ridge-radionuclide distributions. Earth and Planetary Science Letters 105 1-3 (1991) 170-181
107. Giffin D., and Corbett D.R. Evaluation of sediment dynamics in coastal systems via short-lived radioisotopes. Journal of Marine Systems 42 3-4 (2003) 83-96
108. Goldberg E.D. Marine chemistry: 1. Chemical scavengers of the sea. Journal of Geology 62 (1954) 249-265
109. Green M.O., et al. Storm sediment transport: observations from the British North Sea shelf. Continental Shelf Research 15 (1995) 889-912
110. Green M.A., Aller R.C., Cochran J.K., Lee C., and Aller J.Y. Bioturbation in shelf/slope sediments off Cape Hatteras, North Carolina: the use of Th-234, Ch1-a, and Br to evaluate rates of particle and solute transport. Deep-Sea Research II 49 20 (2002) 4627-4644
111. Greenamoyer J.M., and Moran S.B. Investigation of Cd, Cu, Ni and Th-234 in the colloidal size range in the Gulf of Maine. Marine Chemistry 57 3-4 (1997) 217-226
112. Gulin S.B. Seasonal changes of Th-234 scavenging in surface water across the western Black Sea: an implication of the cyclonic circulation patterns. Journal of Environmental Radioactivity 51 3 (2000) 335-347
113. Gulin S.B., et al. Study of seasonal dynamics of the suspended matter, nutrients and pollutants scavenging out of the Black-Sea surface from 1992 to 1994. Geokhimiya 6 (1995) 863-873
114. Guo L.D., Santschi P.H., Baskaran M., and Zindler A. Distribution of dissolved and particulate Th-230 and Th-232 in seawater from the Gulf-of-Mexico and Off Cape-Hatteras as measured by sims. Earth and Planetary Science Letters 133 1-2 (1995) 117-128
115. Guo L.D., Santschi P.H., and Baskaran M. Interactions of thorium isotopes with colloidal organic matter in oceanic environments. Colloids and Surfaces. A, Physicochemical and Engineering Aspects 120 1-3 (1997) 255-271
116. Guo L.D., Hung C.C., Santschi P.H., and Walsh I.D. Th-234 scavenging and its relationship to acid polysaccharide abundance in the Gulf of Mexico. Marine Chemistry 78 2-3 (2002) 103-119
117. Gust G., Bowles W., Giordano S., and Huettel M. Particle accumulation in a cylindrical sediment trap under laminar and turbulent steady flow: an experimental approach. Aquatic Sciences 58 (1996) 297-326
118. Gustafsson O., Gschwend P.M., and Buesseler K.O. Using Th-234 disequilibria to estimate the vertical removal rates of polycyclic aromatic hydrocarbons from the surface ocean. Marine Chemistry 57 1-2 (1997) 11-23
119. 234Th disequilibria. Environmental Science and Technology 31 12 (1997) 3544-3550
120. Gustafsson O., Buesseler K.O., Geyer W.R., Moran S.B., and Gschwend P.M. An assessment of the relative importance of horizontal and vertical transport of particle-reactive chemicals in the coastal ocean. Continental Shelf Research 18 7 (1998) 805-829
121. Gustafsson O., et al. Colloid dynamics and transport of major elements through a boreal river- brackish bay mixing zone. Marine Chemistry 71 1-2 (2000) 1-21
122. Gustafsson O., Long C.M., Macfarlane J., and Gschwend P.M. Fate of linear alkylbenzenes released to the coastal environment near Boston Harbor. Environmental Science and Technology 35 10 (2001) 2040-2048
123. 234Th. Limnology and Oceanography Methods 2 (2004) 62-74
124. Hall I.R., Schmidt S., McCave I.N., and Reyss J.L. Particulate matter distribution and Th-234/U-238 disequilibrium along the Northern Iberian Margin: implications for particulate organic carbon export. Deep-Sea Research I 47 4 (2000) 557-582
125. Hernes P.J., et al. Particulate carbon and nitrogen fluxes and compositions in the central equatorial Pacific. Deep-Sea Research I 48 9 (2001) 1999-2023
126. Hirschberg D.J., Chin P., Feng H., and Cochran J.K. Dynamics of sediment and contaminant transport in the Hudson River Estuary: evidence from sediment distributions of naturally occurring radionuclides. Estuaries 19 4 (1996) 931-949
127. Honeyman B.D., and Santschi P.H. A Brownian pumping model for oceanic trace-metal scavenging-evidence from Th isotopes. Journal of Marine Research 47 (1989) 951-992
128. Honeyman B.D., Balistrieri L.S., and Murray J.W. Oceanic trace metal scavenging: the importance of particle concentration. Deep-Sea Research 35 (1988) 227-246
129. Huettel M., Ziebis W., and Forster S. Flow-induced uptake of particulate matter in permeable sediments. Limnology and Oceanography 41 2 (1996) 309-322
130. Huettel M., Ziebis W., Forster S., and Luther G.W. Advective transport affecting metal and nutrient distributions and interfacial fluxes in permeable sediments. Geochimica et Cosmochimica Acta 62 4 (1998) 613-631
131. Huettel M., Røy H., Precht E., and Ehrenhauss S. Hydrodynamical impact on biogeochemical processes in aquatic sediments. Hydrobiologia 494 (2003) 231-236
132. Hughes D.J., Ansell A.D., and Atkinson R.J.A. Sediment bioturbation by the echiuran worm Maxmuelleria lankesteri (Herdman) and its consequences for radionuclide dispersal in Irish Sea sediments. Journal of Experimental Marine Biology and Ecology 195 2 (1996) 203-220
133. Huh C.A., and Beasley T.M. Profiles of dissolved and particulate thorium isotopes in the water column of coastal Southern-California. Earth and Planetary Science Letters 85 1-3 (1987) 1-10
134. Huh C.A., and Prahl I.G. Role of colloids in upper ocean biogeochemistry in the Northeast Pacific-Ocean elucidated from U-238 Th-234 disequilibria. Limnology and Oceanography 40 3 (1995) 528-532
135. Huh C.A., Zahnle D.L., Small L.F., and Noshkin V.E. Budgets and behaviors of uranium and thorium series isotopes in Santa Monica Basin sediments. Geochimica et Cosmochimica Acta 51 (1987) 1743-1754
136. Huh C.A., Ku T.L., Luo S.D., Landry M.R., and Williams P.M. Fluxes of Th isotopes in the Santa-Monica basin, offshore California. Earth and Planetary Science Letters 116 1-4 (1993) 155-164
137. Hussain N., and Krishnaswami S. U-238 series radioactive disequilibrium in groundwaters: implications to the origin of excess U-234 and fate of reactive pollutants. Geochimica et Cosmochimica Acta 44 (1980) 1287-1291
138. Ishikawa Y., Kagaya H., and Saga K. Biomagnification of Be-7, Th-234, and Ra-228 in marine organisms near the northern Pacific coast of Japan. Journal of Environmental Radioactivity 76 1-2 (2004) 103-112
139. Jaeger J.M., and Nittrouer C.A. Marine record of surge-induced outburst floods from the Bering Glacier, Alaska. Geology 27 9 (1999) 847-850
140. Jaeger J.M., and Nittrouer C.A. Sediment deposition in an Alaskan Fjord: controls on the formation and preservation of sedimentary structures in Icy Bay. Journal of Sedimentary Research 69 5 (1999) 1011-1026
141. Jahnke R.A., and Jahnke D.B. Calcium carbonate dissolution in deep sea sediments: reconciling microelectrode, pore water and benthic flux chamber results. Geochimica et Cosmochimica Acta 68 1 (2004) 47-59
142. Johnson, T.C., 2003. A Report of the Workshop on the Science of Freshwater Inland Seas, Contributions of the SOFIS Working Group (2003) Large Lakes Observatory Technical Report 2003-1 University of Minnesota, Duluth, Minnesota. 40 pp.
143. Kadko D., Feely R., and Massoth G. Scavenging of Th-234 and phosphorus removal from the hydrothermal effluent plume over the north cleft segment of the Juan-De-Fuca Ridge. Journal of Geophysical Research, [Solid Earth] 99 B3 (1994) 5017-5024
144. 228Th from waters of the New York Bight. Earth and Planetary Science Letters 54 3 (1981) 385-392
145. Keafer B.A., Buesseler K.O., and Anderson D.M. Burial of living dinoflagellate cysts in estuarine and nearshore sediments. Marine Micropaleontology 20 2 (1992) 147-161
146. Kershaw P., and Young A. Scavenging of 234Th in the eastern Irish sea. Journal of Environmental Radioactivity 6 1 (1988) 1-23
147. Kersten M., Thomsen S., Priebsch W., and Garbe-Schonberg C.D. Scavenging and particle residence times determined from Th-234/U-238 disequilibria in the coastal waters of Mecklenburg Bay. Applied Geochemistry 13 3 (1998) 339-347
148. 234Th radionuclide tracer profiles. Environmental Science and Technology 39 (2005) 984-990
149. Kigoshi K. Alpha-recoil Thorium-234: dissolution into water and the Uranium-234/Uranium-238 disequilibrium in nature. Science 173 (1971) 47-48
150. Kim G., and Church T.M. Seasonal biogeochemical fluxes of Th-234 and Po-210 in the upper Sargasso Sea: influence from atmospheric iron deposition. Global Biogeochemical Cycles 15 3 (2001) 651-661
151. Klump J.V., et al. Sampling methods and approaches using radionuclide tracers in the study of sediment resuspension and cross margin transport in the nearshore of the Laurentian Great Lakes. International Journal of Sediment Research 18 2 (2003) 266-277
152. Knauss K.G., Ku T.L., and Moore W.S. Radium and thorium isotopes in the surface waters of the East Pacific and coastal Southern California. Earth and Planetary Science Letters 39 2 (1978) 235-249
153. Krishnaswami S., Lal D., and Somayajulu B.L.K. Large-volume in-situ filtration of deep Pacific waters: mineralogical and radioisotope studies. Earth and Planetary Science Letters 32 2 (1976) 420-429
154. Krishnaswami S., Graustein W.C., and Turekian K.K. Radium, thorium, and radioactive lead isotopes in groundwaters: applications to the in situ determination of adsorption-desorption rate constants and retardation factors. Water Resources Research 18 (1982) 1633-1675
155. Krishnaswami S., Monaghan M.C., Westrich J.T., Bennett J.T., and Turekian K.K. Chronologies of sedimentary processess in sediments of the FOAM site, Long Island Sound, Connecticut. American Journal of Science 284 (1984) 706-733
156. Krishnaswami S., Baskaran M., Fowler S.W., and Heyraud M. Comparative role of salps and other zooplankton in the cycling and transport of selected elements and natural radionuclides in Mediterranean waters. Biogeochemistry 1 4 (1985) 353-360
157. Kryger J., and Riisgard H.U. Filtration rate capacities in six species of European freshwater bivalves. Oecologia 77 (1988) 34-38
158. Kuptsov V.M. Th-234 in the Karskoye sea-water. Geokhimiya 8-9 (1994) 1346-1353
159. Kuptsov V.M., Lisitzin A.P., and Shevchenko V.P. Th-234 as an indicator of particulate fluxes in the Kara Sea. Okeanologiya 34 5 (1994) 759-765
160. Kuptzov V.M., Lisitzin A.P., Shevchenko V.P., and Burenkov V.I. Suspended matter fluxes in the bottom sediments of the Laptev Sea. Okeanologiya 39 4 (1999) 597-604
161. Langone L., Frignani M., Cochran J.K., and Ravaioli M. Scavenging processes and export fluxes close to a retreating seasonal ice margin (Ross Sea, Antarctica). Water, Air and Soil Pollution 99 1-4 (1997) 705-715
162. Lauerman L.M.L., Smoak J.M., Shaw T.J., Moore W.S., and Smith K.L. Th-234 and Pb-210 evidence for rapid ingestion of settling particles by mobile epibenthic megafauna in the abyssal NE Pacific. Limnology and Oceanography 42 3 (1997) 589-595
163. Lavelle J.W., Cudaback C.N., Paulson A.J., and Murray J.W. A rate for the scavenging of fine particles by macroaggregates in a deep estuary. Journal of Geophysical Research, [Oceans] 96 C1 (1991) 783-790
164. Lee T., Barg E., and Lal D. Studies of vertical mixing in the Southern California Bight with cosmogenic radionuclides P-32 and Be-7. Limnology and Oceanography 36 5 (1991) 1044-1053
165. Lee T., Barg E., Lal D., and Azam F. Bacterial scavenging of Th-234 in surface ocean waters. Marine Ecology. Progress Series 96 2 (1993) 109-116
166. Legeleux F., Reyss J.L., and Schmidt S. Particle mixing rates in sediments of the Northeast Tropical Atlantic-evidence from Pb-210(Xs), Cs-137, Th-228(Xs) and Th-234(Xs) downcore distributions. Earth and Planetary Science Letters 128 3-4 (1994) 545-562
167. Levin L.A., Childers S.E., and Smith C.R. Epibenthic, agglutinating foraminiferans in the Santa-Catalina basin and their response to disturbance. Deep-Sea Research I 38 4 (1991) 465-483
168. Levin L., et al. Benthic processes on the Peru margin: a transect across the oxygen minimum zone during the 1997-98 El Nino. Progress in Oceanography 53 1 (2002) 1-27
169. Luo S.D., Ku T.L., Roback R., Murrell M., and McLing T.L. In-situ radionuclide transport and preferential groundwater flows at INEEL (Idaho): decay-series disequilibrium studies. Geochimica et Cosmochimica Acta 64 5 (2000) 867-881
170. 238U disequilibrium at a site in Buzzards Bay, MA. Geochimica et Cosmochimica Acta 51 4 (1987) 927-943
171. 238U radioactive disequilibrium in the surface layer of the ocean. Geochimica et Cosmochimica Acta 39 2 (1975) 205-212
172. Mayer L.M. Surface area control of organic carbon accumulation in continental shelf sediments. Geochimica et Cosmochimica Acta 58 (1994) 1271-1284
173. McCartney M., Kershaw P.J., Allington D.J., Young A.K., and Turner D. Industrial sources of naturally-occurring radionuclides in the Eastern Irish Sea. Radiation Protection Dosimetry 45 1-4 (1992) 711-714
174. McKee B.A., DeMaster D.J., and Nittrouer C.A. The use of 234T/h238 disequilibrium to examine the fate of particle-reactive species on the Yangtze continental shelf. Earth and Planetary Science Letters 68 3 (1984) 431-442
175. McKee B.A., Demaster D.J., and Nittrouer C.A. 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 1-2 (1986) 87-106
176. Merritt E. Recent developments in the study of radioactive substances. Science 18 445 (1903) 41-47
177. Michaels A.F., Bates N.R., Buesseler K.O., Carlson C.A., and Knap A.H. Carbon-cycle imbalances in the Sargasso sea. Nature 372 6506 (1994) 537-540
178. Miller L.A., and Svaeren I. Th-234 distributions in coastal and open ocean waters by non-destructive beta-counting. Journal of Radioanalytical and Nuclear Chemistry 256 3 (2003) 431-444
179. Miller R.J., Smith C.R., DeMaster D.J., and Fornes W.L. Feeding selectivity and rapid particle processing by deep-sea megafaunal deposit feeders: a Th-234 tracer approach. Journal of Marine Research 58 4 (2000) 653-673
180. 234Th from a coastal sea: Funka Bay, Japan. Earth and Planetary Science Letters 47 1 (1980) 51-64
181. Moore R.M., and Hunter K.A. Thorium adsorption in the ocean: reversibility and distribution amongst particle sizes. Geochimica et Cosmochimica Acta 49 11 (1985) 2253-2257
182. Moore R.M., and Millward G.E. The kinetics of reversible Th reactions with marine particles. Geochimica et Cosmochimica Acta 52 1 (1988) 113-118
183. Moore W.S., and Wilson A. Advective flow through the upper continental shelf driven by storms, buoyancy, and submarine groundwater discharge. Earth and Planetary Science Letters 235 3-4 (2005) 564-576
184. Moore W.S., DeMaster D.J., Smoak J.M., McKee B.A., and Swarzenski P.W. Radionuclide tracers of sediment-water interactions on the Amazon shelf. Continental Shelf Research 16 5-6 (1996) 645-665
185. Moore W.S., et al. Thermal evidence of water exchange through a coastal aquifer: implications for nutrient fluxes. Geophysical Research Letters 29 (2002)
186. Moran S.B., and Buesseler K.O. Short residence time of colloids in the upper ocean estimated from U-238 Th-234 disequilibria. Nature 359 6392 (1992) 221-223
187. Moran S.B., and Buesseler K.O. Size-fractionated Th-234 in continental-shelf waters off New-England-implications for the role of colloids in oceanic trace-metal scavenging. Journal of Marine Research 51 4 (1993) 893-922
188. Moran S.B., and Moore R.M. The distribution of colloidal aluminium and organic carbon in coastal and open ocean waters off Nova Scotia. Geochimica et Cosmochimica Acta 53 (1989) 2519-2527
189. Moran S.B., and Moore R.M. Kinetics of the removal of dissolved aluminum by diatoms in seawater-a comparison with thorium. Geochimica et Cosmochimica Acta 56 9 (1992) 3365-3374
190. Moran S.B., and Smith J.N. Th-234 as a tracer of scavenging and particle export in the Beaufort Sea. Continental Shelf Research 20 2 (2000) 153-167
191. Moran S.B., Ellis K.M., and Smith J.N. Th-234/U-238 disequilibrium in the central Arctic Ocean: implications for particulate organic carbon export. Deep-Sea Research II 44 8 (1997) 1593-1606
192. Moran S.B., et al. Does Th-234/U-238 disequilibrium provide an accurate record of the export flux of particulate organic carbon from the upper ocean?. Limnology and Oceanography 48 3 (2003) 1018-1029
193. Morel F.M.M., and Price N.M. The biogeochemical cycles of trace metals in the oceans. Science 300 (2003) 944-947
194. Mudge S.M., Assinder D.J., and Bourne G.S. Radiological assessment of the ribble estuary: 3. Redistribution of radionuclides. Journal of Environmental Radioactivity 36 1 (1997) 43-67
195. Mulder T., Weber O., Anschutz P., Jorissen F.J., and Jouanneau J.M. A few months-old storm-generated turbidite deposited in the Capbreton Canyon (Bay of Biscay, SW France). Geo-Marine Letters 21 3 (2001) 149-156
196. Muller F.L.L., Gulin S.B., and Kalvoy A. Chemical speciation of copper and zinc in surface waters of the western Black Sea. Marine Chemistry 76 4 (2001) 233-251
197. Murnane R.J., Cochran J.K., Buesseler K.O., and Bacon M.P. Least-squares estimates of thorium, particle, and nutrient cycling rate constants from the JGOFS north Atlantic bloom experiment. Deep-Sea Research I 43 2 (1996) 239-258
198. 234Th scavenging in the eastern equatorial Pacific. Deep-Sea Research 36 (1989) 1471-1489
199. Murray R.W., Leinen M., and Isern A.R. Biogenic flux of A1 to sediment in the central equatorial Pacific-Ocean-evidence for increased productivity during glacial periods. Paleoceanography 8 5 (1993) 651-670
200. Murray J.W., et al. Export flux of particulate organic carbon from the central equatorial Pacific determined using a combined drifting trap Th-234 approach. Deep-Sea Research II 43 4-6 (1996) 1095-1132
201. Nittrouer C.A., DeMaster D.J., McKee B.A., Cutshall N.H., and Larsen I.L. The effect of sediment mixing on Pb-210 accumulation rates for the Washington continental shelf. Marine Geology 54 (1984) 201-221
202. Niven S.E.H., and Moore R.M. Thorium sorption in seawater suspensions of aluminum-oxide particles. Geochimica et Cosmochimica Acta 57 10 (1993) 2169-2179
203. 234Th dynamics during a coastal phytoplankton bloom. Deep-Sea Research II 42 (1995) 257-273
204. Nodder S.D., et al. Particle transformations and export flux during an in situ iron-stimulated algal bloom in the Southern Ocean. Geophysical Research Letters 28 12 (2001) 2409-2412
205. Nozaki Y., Horibe Y., and Tsubota H. The water column distributions of thorium isotopes in the western North Pacific. Earth and Planetary Science Letters 54 2 (1981) 203-216
206. Palm A., et al. Evaluation of sequentially-coupled POP fluxes estimated from simultaneous measurements in multiple compartments of an air-water-sediment system. Environmental Pollution 128 1-2 (2004) 85-97
207. Pope R.H., Demaster D.J., Smith C.R., and Seltmann H. Rapid bioturbation in equatorial Pacific sediments: evidence from excess Th-234 measurements. Deep-Sea Research II 43 4-6 (1996) 1339-1364
208. Porcelli D., Andersson P.S., Baskaran M., and Wasserburg G.J. Transport of U-and Th-series nuclides in a Baltic Shield watershed and the Baltic Sea. Geochimica et Cosmochimica Acta 65 15 (2001) 2439-2459
209. 234Th with surface-active marine organic matter. Marine Chemistry 76 (2001) 27-45
210. 234Th complexation to marine organic matter. Limnology and Oceanography 47 (2002) 367-377
211. Radakovitch O., Frignani M., Giuliani S., and Montanari R. Temporal variations of dissolved and particulate Th-234 at a coastal station of the northern Adriatic Sea. Estuarine, Coastal and Shelf Science 58 4 (2003) 813-824
212. Ralph E. Scales and structures of large lake eddies. Geophysical Research Letters 29 (2002) 2177
213. Reimers, C., Friedrichs, C., Bebout, B., Howd, P., Huettel, M., Jahnke, R., MacCready, P., Ruttenberg, K., Sanford, L., Trowbridge, J., 2004. Coastal Benthic Exchange Dynamics, COOP Report #10. 97 pp.
214. Riedl R.J., Huang N., and Machan R. The subtidal pump: a mechanism of interstitial water exchange by wave action. Marine Biology 13 (1972) 210-221
215. Roberts K.A., and Santschi P.H. Inverse dependency of particle residence times in ponds to the concentration of phosphate, the limiting nutrient. Journal of Environmental Radioactivity 76 3 (2004) 311-318
216. Rose C.L., McKay W.A., and Toole J. The use of the Th-234/U-238 disequilibrium in studying surf-zone sediment processes in the Eastern Irish Sea. Marine Environmental Research 37 4 (1994) 393-416
217. Rudnicki M.D., and Elderfield H. A chemical-model of the buoyant and neutrally buoyant plume above the tag vent field, 26 degrees-N, Mid-Atlantic Ridge. Geochimica et Cosmochimica Acta 57 13 (1993) 2939-2957
218. Rutgers van der Loeff M.M., and Berger G.W. Scavenging and particle-flux- seasonal and regional variations in the Southern-Ocean (Atlantic Sector). Marine Chemistry 35 1-4 (1991) 553-567
219. Rutgers van der Loeff M.M., and Boudreau B.P. The effect of resuspension on chemical exchanges at the sediment-water interface in the deep sea-A modelling and natural radiotracer approach. Journal of Marine Systems 11 3-4 (1997) 305-342
220. Rutgers van der Loeff M.M., Friedrich J., and Bathmann U.V. Carbon export during the spring bloom at the antarctic polar front, determined with the natural tracer Th-234. Deep-Sea Research II 44 1-2 (1997) 457-478
221. Rutgers van der Loeff M.M., Buesseler K., Bathmann U., Hense I., and Andrews J. Comparison of carbon and opal export rates between summer and spring bloom periods in the region of the Antarctic Polar Front, SE Atlantic. Deep-Sea Research II 49 18 (2002) 3849-3869
222. Rutgers van der Loeff M.M., Meyer R., Rudels B., and Rachor E. Resuspension and particle transport in the benthic nepheloid layer in and near Fram Strait in relation to faunal abundances and Th-234 depletion. Deep-Sea Research I 49 11 (2002) 1941-1958
223. 234Th in aquatic systems. Marine Chemistry 100 (2006) 190-212 (this volume)
224. Rutherford E., and Soddy F. The cause and nature of radioactivity. Philosophical Magazine 4 (1902) 569-585
225. Sambrotto R.N. Nitrogen production in the northern Arabian Sea during the Spring Intermonsoon and Southwest Monsoon seasons. Deep-Sea Research II 48 6-7 (2001) 1173-1198
226. Santschi P.H. Particle flux and trace metal residence time in natural waters. Limnology and Oceanography 29 5 (1984) 1100-1108
227. Santschi P.H., Li Y.-H., and Bell J. Natural radionuclides in the water of Narragansett Bay. Earth and Planetary Science Letters 45 1 (1979) 201-213
228. Santschi P.H., et al. Isotopic evidence for the contemporary origin of high-molecular-weight organic-matter in oceanic environments. Geochimica et Cosmochimica Acta 59 3 (1995) 625-631
229. Santschi P.H., Guo L., Walsh I.D., Quigley M.S., and Baskaran M. Boundary exchange and scavenging of radionuclides in continental margin waters of the Middle Atlantic Bight: implications for organic carbon fluxes. Continental Shelf Research 19 5 (1999) 609-636
230. Santschi P.H., et al. Accumulation rates and sources of sediments and organic carbon on the Palos Verdes shelf based on radioisotopic tracers (Cs-137, Pu-239,Pu-240, Pb-210, Th-234, U-238 and C-14). Marine Chemistry 73 2 (2001) 125-152
231. Santschi P.H., et al. Control of acid polysaccharide production and Th-234 and POC export fluxes by marine organisms. Geophysical Research Letters 30 2 (2003)
232. Santschi P.H., et al. Thorium speciation in seawater. Marine Chemistry 100 (2006) 250-268 (this volume)
233. Sarin M.M., Bhushan R., Rengarajan R., and Yadav D.N. Simultaneous determination of U-238 series nuclides in waters of Arabian sea and Bay of Bengal. Indian Journal of Marine Sciences 21 2 (1992) 121-127
234. Sarin M.M., Krishnaswami S., Ramesh R., and Somayajulu B.L.K. U-238 decay series nuclides in the Northeastern Arabian Sea- scavenging rates and cycling processes. Continental Shelf Research 14 2-3 (1994) 251-265
235. Sarin M.M., Rengarajan R., and Somayajulu B.L.K. Natural radionuclides in the Arabian Sea and Bay of Bengal- distribution and evaluation of particle scavenging processes. Proceedings of the Indian Academy of Sciences. Earth and Planetary Sciences 103 2 (1994) 211-235
236. Sarin M.M., Rengarajan R., and Ramaswamy V. Th-234 scavenging and particle export fluxes from the upper 100 m of the Arabian Sea. Current Science 71 11 (1996) 888-893
237. 234Th deficit and excess in the Southern Ocean during spring 2001: particle export and remineralization. Geophysical Research Letters 31 12 (2004)
238. 234Th sorption and export models in the water column: A review. Marine Chemistry 100 (2006) 234-249 (this volume)
239. Schaff T., et al. Spatial heterogeneity of benthos on the carolina continental-slope- large (100-Km)-scale variation. Marine Ecology. Progress Series 88 2-3 (1992) 143-160
240. Schmidt S., Reyss J.L., Nguyen H.V., and Buatmenard P. Th-234 cycling in the upper water column of the Northwestern Mediterranean Sea. Global and Planetary Change 3 1-2 (1990) 25-33
241. Schmidt S., Nival P., Reyss J.L., Baker M., and Buatmenard P. Relation between Th-234 scavenging and zooplankton biomass in Mediterranean surface waters. Oceanologica Acta 15 2 (1992) 227-231
242. Schmidt S., de Stigter H.C., and van Weering T.C.E. Enhanced short-term sediment deposition within the Nazare Canyon, North-East Atlantic. Marine Geology 173 1-4 (2001) 55-67
243. Schmidt S., Chou L., and Hall I.R. Particle residence times in surface waters over the north-western Iberian Margin: comparison of pre-upwelling and winter periods. Journal of Marine Systems 32 1-3 (2002) 3-11
244. Schmidt S., Andersen V., Belviso S., and Marty J.C. Strong seasonality in particle dynamics of north-western Mediterranean surface waters as revealed by Th-234/U-238. Deep-Sea Research I 49 8 (2002) 1507-1518
245. Schmidt S., van Weering T.C.E., Reyss J.L., and van Beek P. Seasonal deposition and reworking at the sediment-water interface on the northwestern Iberian margin. Progress in Oceanography 52 2-4 (2002) 331-348
246. Shimmield G.B., Ritchie G.D., and Fileman T.W. The impact of marginal ice-zone processes on the distribution of Pb-210, Po-210 and Th-234 and implications for new production in the Bellingshausen Sea, Antarctica. Deep-Sea Research II 42 4-5 (1995) 1313-1335
247. Shull D.H. Transition-matrix model of bioturbation and radionuclide diagenesis. Limnology and Oceanography 46 4 (2001) 905-916
248. Shull D.H., and Mayer L.M. Dissolution of particle-reactive radionuclides in deposit-feeder digestive fluids. Limnology and Oceanography 47 5 (2002) 1530-1536
249. Shum K.T., and Sundby B. Organic matter processing in continental shelf sediments - the subtidal pump revisited. Marine Chemistry 53 12 (1996) 81-87
250. Silverberg N. Radionuclide profiles, sedimentation rates, and bioturbation in modern sediments of the Laurentian Trough, Gulf of St. Lawrence. Oceanology Acta 9 3 (1986) 285-290
251. Smith C.R., Pope R.H., Demaster D.J., and Magaard L. Age-dependent mixing of deep-sea sediments. Geochimica et Cosmochimica Acta 57 7 (1993) 1473-1488
252. Smith C.R., et al. Phytodetritus at the abyssal seafloor across 10 degrees of latitude in the central equatorial Pacific. Deep-Sea Research II 43 4-6 (1996) 1309-1338
253. Smith C.R., et al. Sediment community structure around a whale skeleton in the deep Northeast Pacific: macrofaunal, microbial and bioturbation effects. Deep-Sea Research II 45 1-3 (1998) 335-364
254. Smith K.J., Vintro L.L., Mitchell P.I., de Bois P.B., and Boust D. Uranium-thorium disequilibrium in north-east Atlantic waters. Journal of Environmental Radioactivity 74 1-3 (2004) 199-210
255. Smoak J.M., DeMaster D.J., Kuehl S.A., Pope R.H., and McKee B.A. The behavior of particle-reactive tracers in a high turbidity environment: Th-234 and Pb-210 on the Amazon continental shelf. Geochimica et Cosmochimica Acta 60 12 (1996) 2123-2137
256. Smoak J.M., Moore W.S., Thunell R.C., and Shaw T.J. Comparison of Th-234, Th-228, and Pb-210 fluxes with fluxes of major sediment components in the Guaymas Basin, Gulf of California. Marine Chemistry 65 3-4 (1999) 177-194
257. Smoak J.M., Moore W.S., and Thunell R.C. Influence of boundary scavenging and sediment focusing on Th-234, Th-228 and Pb-210 fluxes in the Santa Barbara Basin. Estuarine, Coastal and Shelf Science 51 3 (2000) 373-384
258. Smoak J.M., et al. Radionuclide fluxes and particle scavenging in Cariaco Basin. Continental Shelf Research 24 13-14 (2004) 1451-1463
259. Somayajulu B.L.K., Rengarajan R., and Jani R.A. Geochemical cycling in the Hooghly estuary, India. Marine Chemistry 79 3-4 (2002) 171-183
260. Sommerfield C.K., Nittrouer C.A., and Alexander C.R. Be-7 as a tracer of flood sedimentation on the northern California continental margin. Continental Shelf Research 19 3 (1999) 335-361
261. Sommerfield C.K., Aller R.C., and Nittrouer C.A. Sedimentary carbon, sulfur, and iron relationships in modern and ancient diagenetic environments of the Eel River Basin (USA). Journal of Sedimentary Research 71 3 (2001) 335-345
262. Spencer D.W., et al. Chemical fluxes from a sediment trap experiment in the deep Sargasso Sea. Journal of Marine Research 36 3 (1978) 493-523
263. Sun M.Y., Aller R.C., and Lee C. Early diagenesis of chlorophyll-a in long-island sound sediments- a measure of carbon flux and particle reworking. Journal of Marine Research 49 2 (1991) 379-401
264. Sun M.Y., Aller R.C., and Lee C. Spatial and temporal distributions of sedimentary chloropigments as indicators of benthic processes in long-island sound. Journal of Marine Research 52 1 (1994) 149-176
265. Swarzenski P.W., Porcelli D., Andersson P.S., and Smoak J.M. The behavior of U-and Th-series nuclides in the estuarine environment. Review of Mineral Geochemistry 52 (2003) 577-606
266. Sweeney E.N., McGillicuddy Jr. D.J., and Buesseler K.O. Biogeochemical impacts due to mesoscale eddy activity in the Sargasso Sea as measured at the Bermuda Atlantic Time-series Study (BATS). Deep-Sea Research, Part II: Topical Studies in Oceanography 50 (2004) 3017-3039
267. Tanaka N., Takeda Y., and Tsunogai S. Biological effect on removal of Th-234, Po-210 and Pb-210 from surface-water in Funka Bay, Japan. Geochimica et Cosmochimica Acta 47 10 (1983) 1783-1790
268. Thunell R.C., Moore W.S., Dymond J., and Pilskaln C.H. Elemental and isotopic fluxes in the Southern California Bight- a time-series sediment trap study in the San-Pedro Basin. Journal of Geophysical Research, [Oceans] 99 C1 (1994) 875-889
269. Tricca A., Wasserburg G.J., Porcelli D., and Baskaran M. The transport of U-and Th-series nuclides in a sandy unconfined aquifer. Geochimica et Cosmochimica Acta 65 8 (2001) 1187-1210
270. Trimble S.M., Baskaran M., and Porcelli D. Scavenging of thorium isotopes in the Canada basin of the Arctic Ocean. Earth and Planetary Science Letters 222 3-4 (2004) 915-932
271. Tsunogai S., Taguchi K., and Harada K. Seasonal variation in the difference between observed and calculated particulate fluxes of Th-234 in Funka Bay, Japan. Journal of the Oceanographical Society of Japan 42 (1986) 91-98
272. Tsunogai S., Noriki S., Harada K., and Tate K. Vertical-change index for the particulate transport of chemical and isotopic components in the ocean. Geochemical Journal 24 4 (1990) 229-243
273. Turekian K.K., Benninger L.K., and Dion E.P. 7Be and 210Pb total deposition fluxes at New Haven, Connecticut, and at Bermuda. Journal of Geophysical Research 88 (1983) 5411-5415
274. Turnewitsch R., Witte U., and Graf G. Bioturbation in the abyssal Arabian Sea: influence of fauna and food supply. Deep-Sea Research II 47 14 (2000) 2877-2911
275. Turnewitsch R., and Springer B.M. Do bottom mixed layers influence Th-234 dynamics in the abyssal near-bottom water column?. Deep-Sea Research I 48 5 (2001) 1279-1307
276. Usbeck R., Rutgers van der Loeff M., Hoppema M., and Schlitzer R. Shallow remineralization in the Weddell Gyre. Geochemistry Geophysics Geosystems (2002) 3
277. Vanderploeg H.A., et al. Dispersal and emerging ecological impacts of Ponto-Caspian species in the Laurentian Great Lakes. Canadian Journal of Fisheries and Aquatic Sciences 59 (2002) 1209-1228
278. Vogler S., Jung M., and Mangini A. Scavenging of Th-234 and Be-7 in Lake Constance. Limnology and Oceanography 41 7 (1996) 1384-1393
279. Walsh J.P., and Nittrouer C.A. Contrasting styles of off-shelf sediment accumulation in New Guinea. Marine Geology 196 3-4 (2003) 105-125
280. Waples J.T., Orlandini K.A., Edgington D.N., and Klump J.V. Seasonal and spatial dynamics of Th-234/U-238 disequilibria in southern Lake Michigan. Journal of Geophysical Research, [Oceans] 109 C10 (2004)
281. Wei C.L., and Hung C.C. Particle scavenging in the upper water column off Mindoro Island, Philippine: Th-234/U-238 disequilibria. Estuarine, Coastal and Shelf Science 46 3 (1998) 351-358
282. Wei C.L., and Murray J.W. Th-234/U-238 disequilibria in the Black-Sea. Deep-Sea Research I 38 (1991) S855-S873
283. Wei C.L., and Murray J.W. Temporal variations of Th-234 activity in the water column of Dabob Bay-particle scavenging. Limnology and Oceanography 37 2 (1992) 296-314
284. 238U disequilibria. Deep-Sea Research I 52 (2005) 1477-1488
285. Wheatcroft R.A., and Martin W.R. Spatial variation in short-term (Th-234) sediment bioturbation intensity along an organic-carbon gradient. Journal of Marine Research 54 4 (1996) 763-792
286. Wurtsbaugh W., et al. Report of the Workshop on Emerging Research Questions for Limnology: The Study of Inland Waters, Boulder, Colorado (2002)
287. Yamada M., and Aono T. Pb-210 and Th-234 in settling particles collected by time-series sediment traps in the Okinawa Trough. Deep-Sea Research II 50 2 (2003) 487-501
288. Yang Y.L., Han X., and Kusakabe M. POC fluxes from euphotic zone estimated from Th-234 deficiency in winter in the northwestern North Pacific Ocean. Acta Oceanologica Sinica 23 1 (2004) 135-147