CT33A:
The Behavior of Trace Elements and Isotopes in Different Ocean Basins: New Insights from Comparisons and Contrasts II


Session ID#: 37184

Session Description:
Recent international programs such as GEOTRACES have been examining the biogeochemical cycling of trace elements and isotopes (TEIs) in the world’s oceans to reveal the mechanisms and rates affecting their concentrations, distributions, chemical forms, and interactions with organisms. In addition to studies by individual investigators, the accumulating results show many similarities, but some surprising differences between ocean basins, with a classic example being the regionally-specific Cd/PO4 relationships. In the same way that deviations from the Redfield ratio of N/P between ocean basins, known since the 1970s GEOSECS program, provide insight into nitrogen cycle processes, what can we learn from the comparisons and contrasts of TEIs, and what tools are needed to explore and test these observations? This session seeks presentations from the observational and modeling communities on lessons learned from inter basin TEI data sets with respect to inputs to, cycling within, and exports from the world’s oceans. In addition we invite contributions that consider how TEI distributions, their chemical speciation, and interactions with micro-organisms shape microbial community structure and productivity in various ocean basins.
Primary Chair:  Gregory A Cutter, Old Dominion University, Ocean, Earth and Atmospheric Sciences, Norfolk, VA, United States
Co-chairs:  Adrian Burd, University of Georgia, Athens, GA, United States, Jay T. Cullen, University of Victoria, School of Earth and Ocean Sciences, Victoria, BC, Canada and Tung-Yuan Ho, Academia Sinica, Research Center for Environmental Changes, Taipei, Taiwan
Moderators:  Adrian Burd, University of Georgia, Athens, GA, United States and Tung-Yuan Ho, Academia Sinica, Research Center for Environmental Changes, Taipei, Taiwan
Student Paper Review Liaison:  Adrian Burd, University of Georgia, Athens, GA, United States
Index Terms:

1952 Modeling [INFORMATICS]
4860 Radioactivity and radioisotopes [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4870 Stable isotopes [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4875 Trace elements [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Cross-Topics:
  • BN - Biogeochemistry and Nutrients
  • MM - Microbiology and Molecular Ecology
  • OM - Ocean Modeling

Abstracts Submitted to this Session:

Contrasts in trace element content of marine phytoplankton from different ocean basins (309791)
Benjamin S Twining, Bigelow Lab for Ocean Sciences, East Boothbay, ME, United States
Potential sources of sub-surface Al enrichments seen in the CLIVAR and GEOTRACES data sets (325137)
Chris I Measures1, Mariko Hatta1, Maxime M Grand2 and William M Landing3, (1)University of Hawaii at Manoa, Oceanography, Honolulu, HI, United States, (2)University of Hawaii at Manoa, Department of Oceanography, Honolulu, HI, United States, (3)Florida State University, Earth, Ocean, and Atmospheric Science, Tallahassee, FL, United States
Global distribution of rare earth elements simulated by an ocean general circulation model (316527)
Akira Oka, Atmosphere and Ocean Research Institute, University of Tokyo, Kashiwa, Japan, Hajime Obata, Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Japan and Hirofumi Tazoe, Hirosaki University, Aomori, Japan
Biogeochemical cycles of arsenic and selenium in four ocean basins: water mass aging or basin-specific processes? (321119)
Gregory A Cutter, Kyle McQuiggan and Zoe Rizzo Wambaugh, Old Dominion University, Ocean, Earth and Atmospheric Sciences, Norfolk, VA, United States
A Comparison of the Size Partitioning of Micronutrient Trace Metals (Fe, Mn, Cu, Cd, Zn, and Ni) into Soluble and Colloidal Phases in the Atlantic, Pacific, and Arctic Oceans (326329)
Jessica N Fitzsimmons, Texas A&M University College Station, Department of Oceanography, College Station, TX, United States, Laramie Jensen, Texas A&M University College Station, Oceanography, College Station, TX, United States and Robert M Sherrell, Rutgers Univ, Departments of Marine and Coastal Sciences and Earth and Planetary Sciences, New Brunswick, NJ, United States
Classical Boundary Scavenging in the Arctic Ocean Expressed in Dissolved Thorium and Protactinium Along the GEOTRACES GN01 Transect (313822)
Robert F Anderson1, Sebastian M. Vivancos2, Frank J Pavia2, Martin Q Fleisher3, Pu Zhang4, Hai Cheng5 and R. Lawrence Edwards4, (1)Columbia University of New York, Palisades, NY, United States, (2)Columbia University, Department of Earth and Environmental Sciences, New York, NY, United States, (3)Lamont -Doherty Earth Observatory, Palisades, NY, United States, (4)University of Minnesota, Department of Earth Sciences, Minneapolis, MN, United States, (5)University of Minnesota, Department of Earth and Environmental Sciences, Minneapolis, MN, United States
The Distribution of Bioactive Trace Metals (Mn, Fe, Ni, Cu, Zn, Cd and Pb) Through the Canadian Arctic (314409)
Sarah Louise Jackson1, David J Janssen2, Kathryn Purdon1 and Jay T. Cullen3, (1)University of Victoria, Victoria, BC, Canada, (2)University of Victoria, Vancouver, BC, Canada, (3)University of Victoria, School of Earth and Ocean Sciences, Victoria, BC, Canada
Chromium Reduction on the Arctic Chukchi Shelf (326105)
Simone B Moos and Edward A Boyle, Massachusetts Institute of Technology, Earth Atmospheric and Planetary Sciences, Cambridge, MA, United States

See more of: Chemical Tracers, Organic Matter and Trace Elements