2012-2013 Science Planning Summaries
U.S. Antarctic Program - Science Support Section United States Antarctic Program United States Antarctic Program Logo National Science Foundation Logo
Collaborative Research: TRacing the fate of Algal Carbon Export in the Ross Sea (TRACERS)

Program Manager:
Dr. Peter Milne


ASC POC/Implementer:
Adam Jenkins / Robert Kluckhohn

Dr. Dennis Arthur Hansell (Principal Investigator)

University of Miami
Miami, Florida

Supporting Stations:  RV/IB Nathaniel B. Palmer
Research Locations:  

Project Description:
There is a large export of sinking biogenic, organic particles to the deep Ross Sea each spring/summer. The fate of this material is normally assumed to be 1) loss to the seafloor and, 2) remineralization in the water column while sinking. A third fate, which researchers will explore in this work, is the water column accumulation of both suspended and dissolved organic matter. They will assess export production both from the surface layer (productivity measurements) and within the deeper water column (sediment traps), and will assess accumulation of organic matter within the water column using both geochemical and optical techniques. The optics will inform as to the abundance and distribution of particles with depth, while measures of particulate and dissolved organic carbon will tell the concentrations of those carbon pools.

Field Season Overview:
Field team members will sail on the R/V Nathaniel B. Palmer and will deploy a conductivity-temperature-depth (CTD) sampling rosette. They will also conduct net tows and use sediment traps.

Deploying Team Members:

  • Sarah Bercovici
  • Alexander Bochdansky (Co-PI)
  • Melissa Clouse
  • Hans Dejong
  • Giacomo DiTullio (Co-PI)
  • Robert Dunbar (Co-PI)
  • Cody Garrison
  • Santiago Gonzalez
  • Dennis Hansell (PI)
  • Roberta Hansman
  • Brian Kendrick
  • David Koweek
  • Allison Lee
  • Peter Lee
  • Andrew Margolin
  • Meredith Miles
  • David Mucciarone
  • Christina Riesselman
  • Rachel Stevens

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Curator: Esther L. Hill PhD, Antarctic Support Contract   |   NSF Official: Alexandra Isern, Office of Polar Programs