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Earth Institute Research Projects

Ice sheet Dynamics and Processes along the West Antarctic Continental Shelf

Lead PI: Dr. Frank O Nitsche

Unit Affiliation: Marine Geology & Geophysics, Lamont-Doherty Earth Observatory (LDEO)

June 2009 - May 2013
Inactive
Antarctica ; Southern Ocean ; Amundsen Sea
Project Type: Research

DESCRIPTION: The project will compile bathymetry data from the Bellinghausen, Amundsen, and Ross Seas and obtain/add new data from the Oden cruises. Also, the project will identify large-scale morphological features, analyze the geometry of cross-shelf troughs, and establish a conceptual model of ice flow and paleo ice stream distribution.

OUTCOMES: The Oden swath bathymetry and previous bathymetry have been compiled and integrated. Major geological features were identified. Five journal articles and six one-time publications.

SPONSOR:

National Science Foundation (NSF)

ORIGINATING SPONSOR:

National Science Foundation

FUNDED AMOUNT:

$160,179

EXTERNAL COLLABORATORS:

University of Stockholm

WEBSITE:

https://www.nsf.gov/awardsearch/showAward?AWD_ID=0838735&HistoricalAwards=false

PUBLICATIONS:

Nitsche, F. O., Gohl, K., Larter, R., Hillenbrand, C.-D., Kuhn, G., Smith, J., Jacobs, S., Anderson, J., and Jakobsson, M.2013. Paleo ice flow and subglacial meltwater dynamics in Pine Island Bay, West Antarctica, The Cryosphere, 7, 249–262, doi:10.5194/tc-7-249-2013.

Nitsche, F.O.; Larter, R D; Gohl, K.; Graham, A G C; Kuhn, G. (2016). Bedrock Channels in Pine Island Bay, West Antarctica. In: Dowdeswell, J A; Canals, M; Jakobsson, M, Todd, B J, Dodeswell, E K; and Hogan, K A (eds) Atlas of Submarine Glacial Landforms: Modern, Quaternary and Ancient. Geol. Soc. Lon. Mem., 46, 217-218. Doi: 10.1144/M46.1.

Nitsche, FO; Larter, R D; Gohl, K.; Graham, A G C; Kuhn, G. (2016). Crag-and-tail features on the Amundsen Sea continental shelf, West Antarctica In: Dowdeswell, J A; Canals, M; Jakobsson, M, Todd, B J, Dodeswell, E K; and Hogan, K A (eds) Atlas of Submarine Glacial Landforms: Modern, Quaternary and Ancient Geol. Soc. Lon. Mem., 46, 199-200. DOI: 10.1144/M46.2.

Kirshner, A. E., J. B. Anderson, M. Jakobsson, M. O’Regan, W. Majewski, F. O. Nitsche, 2012. Post-LGM deglaciation in Pine Island Bay, West Antarctica. Quaternary Science Reviews, 38, 11-26.

Jakobsson, M., Anderson, J.B.,Nitsche, F.O., Gyllencreutz, R., Kirshner, A., Kirchner, N., O’Regan, M., Mohammad, R., Eriksson, B., 2012, Ice Sheet Retreat Dynamics Inferred from Glacial Morphology of the Central Pine Island Bay Trough, West Antarctica. Quaternary Science Reviews, 38, 1-10.

Jakobsson, M., Anderson, J.B., Nitsche, F.O., Dowdeswell, J.A., Gyllencreutz, R., Kirchner, N., O’Regan, M.A., Alley, R.B., Anandakrishnan, S., Mohammad, R., Eriksson, B., Fernandez, R., Kirshner, A., Minzoni, R., Stolldorf, T., Majewski, W., 2011. Geological record of Ice Shelf Breakup and Grounding Line Retreat, Pine Island Bay, West Antarctica. Geology 39, 691-694.

DATASETS: Nitsche, Frank (2013), Processed Grids (NetCDF:GMT format) derived from Multibeam Sonar Data from the Antarctic Amundsen Sea assembled as part of the Antarctica:PineIslandBay_Nitsche Data Compilation. Interdisciplinary Earth Data Alliance (IEDA). doi:10.1594/IEDA/320080.

KEYWORDS

bathymetry data synthesis multibeam data paleo ice streams marine geology and geophysics ice flows

THEMES

Earth fundamentals