2015-2016 USAP Field Season
Organic carbon oxidation and iron remobilization by West Antarctic Shelf sediments
Dr. David Jay Burdige
Old Dominion University
Supporting Stations: RV/IB Nathaniel B. Palmer
This project will use sediment cores to determine the sediment-water fluxes of dissolved oxygen, total carbon dioxide, nutrients, and the vertical distributions of these dissolved compounds. They will also measure iron and manganese in the pore waters. Researchers will collect sediment cores using USAP-provided mega- and Kasten corers and will take measurements using a combination of microelectrodes, centrifugation, and rhizon samplers.
Field Season Overview
Field team members will sail on the RVIB Nathaniel B. Palmer from Punta Arenas, Chile to sampling stations in the Western Antarctic Peninsula area. Fieldwork will include repeated mega-coring, Kasten coring and conventional conductivity-temperature-depth (CTD) sampling. The team will sample at 14 stations located on the existing Palmer Long Term Ecological Research (PAL-LTER) grid. At each station they will conduct two mega-core deployments, a single Kasten core deployment, and a single bottom-depth CTD deployment. They will use the acquired samples to conduct a series of shipboard microelectrode experiments and incubations along with processing of the sediment cores. At the end of their cruise they will return to Punta Arenas. Samples will be shipped to the home institution for further analysis.
Deploying Team Members