CT12A:
Trace Elements and Isotopes at the Interfaces of the Atlantic Ocean I


Session ID#: 11304

Session Description:
Trace elements play a crucial role in the ocean. Some are toxic at high concentrations, others serve as essential micronutrients in the many metabolic processes active in marine organisms. Some trace elements and their isotopes (TEIs) are diagnostic and allow the quantification of specific oceanic mechanisms. Studying the biogeochemical cycles of TEIs is thus necessary to deepen our understanding of carbon and nutrient cycling, climate change, ocean ecosystems and environmental contamination. The Atlantic Ocean is one of the primary CO2 sinks of the world ocean and one of the most biologically productive. Recently, full-depth high resolution measurement campaigns, especially in the framework of the international GEOTRACES program, have revolutionized our understanding of the TEI cycling in the Atlantic Ocean. However, processes occurring at the oceanic interfaces are very complex and need more attention. The aim of this session is to increase our understanding of the exchange of TEIs at the interfaces between the ocean and i) the atmosphere, ii) the continents (e.g. by rivers and groundwater), iii) the marine sediments, and iv) the ridges. We will particularly encourage contributions dealing with interdisciplinary studies, with new insights gained by application of state-of-the-art analytical tools and modeling approaches.
Primary Chair:  Geraldine Sarthou, LEMAR UMR 6539 CNRS UBO IRD IFREMER, IUEM, Plouzané, France
Chairs:  Edward A Boyle, Massachusetts Institute of Technology, Cambridge, MA, United States, Gideon Mark Henderson, University of Oxford, Earth Sciences, Oxford, United Kingdom and Micha J.A. Rijkenberg, Royal Netherlands Institute for Sea Research, Den Burg, Netherlands
Moderators:  Edward A Boyle, Massachusetts Institute of Technology, Cambridge, MA, United States, Micha J.A. Rijkenberg, Royal Netherlands Institute for Sea Research, Den Burg, Netherlands, Gideon Mark Henderson, University of Oxford, Earth Sciences, Oxford, United Kingdom and Geraldine Sarthou, LEMAR, UMR 6539, Plouzané, France
Student Paper Review Liaison:  Geraldine Sarthou, LEMAR, UMR 6539, Plouzané, France
Index Terms:

4807 Chemical speciation and complexation [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4808 Chemical tracers [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4870 Stable isotopes [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4875 Trace elements [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Co-Sponsor(s):
  • B - Biogeochemistry and Nutrients
  • ME - Marine Ecosystems
  • PC - Past, Present and Future Climate
  • PO - Physical Oceanography/Ocean Circulation

Abstracts Submitted to this Session:

CT12A-01
Dissolved Fe and Mn During the A16S CLIVAR Repeat Hydrography Transect in the South Atlantic (87023)
Mariko Hatta1, Chris I Measures1, William M Landing2 and Rachel Shelley3, (1)University of Hawaii at Manoa, Oceanography, Honolulu, HI, United States, (2)Florida State University, Earth, Ocean, and Atmospheric Science, Tallahassee, FL, United States, (3)University of Western Brittany, Brest, France
CT12A-02
Iron isotopes in bottom waters from the Bransfield Strait: Implications for deep water Fe supply (91296)
Torben Stichel1, Alastair J.M. Lough2, William B Homoky2,3, Douglas Connelly4, Jessica Katharina Klar2, Tim M Conway5, Seth John6 and Rachel Mills2, (1)University of Southampton, Ocean and Earth Science, Southampton, SO14, United Kingdom, (2)University of Southampton, Ocean and Earth Science, Southampton, United Kingdom, (3)University of Oxford, Department of Earth Sciences, United Kingdom, (4)National Oceanography Centre, NERC, Southampton, United Kingdom, (5)University of South Florida, St. Petersburg, FL, United States, (6)University of South Carolina, Columbia, SC, United States
CT12A-03
How do local and remote processes affect the distribution of iron in the Atlantic Ocean? (88648)
Alessandro Tagliabue1, Philip W Boyd2, Micha J.A. Rijkenberg3 and Richard G Williams1, (1)University of Liverpool, Earth, Ocean and Ecological Sciences, Liverpool, United Kingdom, (2)IMAS, ACE-CRC, University of Tasmania, Hobart, Australia, (3)Royal Netherlands Institute for Sea Research, Den Burg, Netherlands
CT12A-04
Radium isotopes as tracers of hydrothermal inputs and plume dynamics in the deep ocean: results from Atlantic and Pacific US GEOTRACES cruises (86910)
Lauren Elizabeth Kipp1, Matthew A Charette1, Virginie Sanial2, Paul Henderson1, Douglas E Hammond3 and Willard S Moore4, (1)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (2)Organization Not Listed, Washington, DC, United States, (3)University of Southern California, Los Angeles, CA, United States, (4)University of South Carolina Columbia, Columbia, SC, United States
CT12A-05
Potential Sources Affecting Seawater Nd Isotopes in the Southwest Atlantic Ocean (87605)
Yingzhe Wu1, Steven L Goldstein1, Leopoldo Pena2, Alison E Hartman3,4, Micha J.A. Rijkenberg5 and Hein J W de Baar5, (1)Lamont Doherty Earth Observatory of Columbia Univeristy, Palisades, NY, United States, (2)University of Barcelona, GRC Geociències Marines, Dept. d'Estratigrafia, Paleontologia i Geociències Marines, Barcelona, Spain, (3)Hebrew University of Jerusalem, Institute of Earth Sciences, Jerusalem, Israel, (4)Interuniversity Institute of Marine Sciences, Eilat, Israel, (5)Royal Netherlands Institute for Sea Research, Den Burg, Netherlands
CT12A-06
Dissolved rare earth elements in the US GEOTRACES North Atlantic Section (90492)
Alan M Shiller, University of Southern Mississippi, Marine Science, Stennis Space Center, MS, United States
CT12A-07
Mercury in the North Atlantic and Arctic Oceans - results of the 2014 GEOTRACES GEOVIDE & 2015 GEOTRACES TransArc II cruises (91829)
Lars-Eric Heimbürger, University of Bremen, Bremen, Germany; Mediterranean Institute of Oceanography, Marseille Cedex 09, France, Daniel Cossa, ISTerre Institute of Earth Sciences, Saint Martin d'Hères, France, Micha J.A. Rijkenberg, Royal Netherlands Institute for Sea Research, Den Burg, Netherlands, Geraldine Sarthou, LEMAR, UMR 6539, Plouzané, France, Michiel Rutgers van der Loeff, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Marine Geochemistry, Bremerhaven, Germany, Elsie M Sunderland, Harvard University, School of Engineering and Applied Sciences, Cambridge, MA, United States and Jeroen Sonke, CNRS-GET, Toulouse, France
CT12A-08
Lead Concentrations and Stable Lead Isotopes in the North Atlantic and Labrador Sea (91229)
Cheryl Zurbrick, MIT, EAPS, Cambridge, MA, United States and Edward A Boyle, Massachusetts Institute of Technology, Cambridge, MA, United States
See more of: Chemical Tracers, DOM and Trace Metals