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The Glaciological Basis of Palaeoclimatic Reconstructions of Ice-Shelf Moraines
Entry ID: K064_2010_2012_NZ_1


Summary
Abstract: The research is giving us an understanding of the entrainment, transfer and deposition of sediment by ice shelves. The investigation of the structure, composition and motion of the Southern McMurdo Ice shelf will develop a model for the accretion and transfer of ice and debris in ice shelves and a glaciological basis for palaeoclimatic reconstructions derived from ice shelf moraines. Defining the glaciological basis of ice shelf moraine formation is essential to understanding the age and chronology of ice shelf moraines, which are widely used to reconstruct the timing and magnitude of Late Pleistocene ice advances. To gain an understanding of the age and chronology of ice shelf moraines, ice cores will be taken from the McMurdo ice shelf to look at the composition of the ice (isotopes and solute chemistry).
To achieve these objectives we are using surface mapping from aerial photographs and satellite imagery together with a ground penetrating radar (GPR) survey of the subsurface geometry of the ice shelf. This research will give us a good understanding of the entrainment, transfer, deposition and deformation of sediment adjacent to the margin of a thin, partly grounded ice shelf (the McMurdo Ice Shelf). The motion of the ice shelf is being monitored by GPS surveying of stakes drilled into the surface of the ice shelf and analysed each year for displacement.

Geographic Coverage
 N: 78.30408 S: 78.19859  E: 166.00351  W: 167.21272
 Min Altitude: 20  Max Altitude: 200

Temporal Coverage
Start Date: 2010-11-08
Stop Date: 2010-12-05

Start Date: 2011-11-08
Stop Date: 2011-11-19


Location Keywords
CONTINENT > ANTARCTICA > McMURDO ICE SHELF
CONTINENT > ANTARCTICA > MINA BLUFF
CONTINENT > ANTARCTICA
GEOGRAPHIC REGION > POLAR


Science Keywords
LAND SURFACE >GEOMORPHIC LANDFORMS/PROCESSES >FLUVIAL PROCESSES    [Definition]
LAND SURFACE >GEOMORPHIC LANDFORMS/PROCESSES >GLACIAL PROCESSES    [Definition]
CRYOSPHERE >FROZEN GROUND >GROUND ICE    [Definition]
CRYOSPHERE >FROZEN GROUND    [Definition]
CRYOSPHERE >GLACIERS/ICE SHEETS    [Definition]
CRYOSPHERE >GLACIERS/ICE SHEETS >GLACIER THICKNESS/ICE SHEET THICKNESS    [Definition]


ISO Topic Category
GEOSCIENTIFIC INFORMATION


Platform
SV >Snow Vehicle    [Information]
HAGGLUND >NZAP Hagglund Oversnow Vehicle    [Information]


Instrument
CORING DEVICES    [Information]
GPS >Global Positioning System    [Information]
GPR >Ground Penetrating Radar    [Information]


Quality
Geography department at the University of Otago, New Zealand. Please contact the investigator for more information.


Data Set Progress
COMPLETE


Data Center
Antarctica New Zealand, New Zealand Antarctic Institute, New Zealand    [Information]
Data Center URL: http://www.antarcticanz.govt.nz/

Data Center Personnel
Name: CAROLINE MACLAURIN
Phone: (03) 358 0200
Fax: (03) 358 0211
Email: c.maclaurin at antarcticanz.govt.nz
Contact Address:
Antarctica New Zealand
Private Bag 4745
City: Christchurch 8140
Country: New Zealand


Personnel
SEAN FITZSIMONS
Role: INVESTIGATOR
Phone: +64 3 479 8786
Fax: +64 3 479 9037
Email: sjf at geography.otago.ac.nz
Contact Address:
Department of Geography
University of Otago
PO BOX 59
City: Dunedin
Country: New Zealand


Publications/References
Fitzsimons, S.J. and Lorrain, R. Subglacial Processes.In Singh, V. P.; Singh, P.; Haritashya, U.K. (Eds.) Encyclopedia of Snow, Ice and Glaciers, Springer ISBN: 978-90-481-2643-9 (2011)

Lorrain, R. and Fitzsimons, S.J. Cold-based glaciers. In Singh, V. P.; Singh, P.; Haritashya, U.K. (Eds.) Encyclopedia of Snow, Ice and Glaciers, Springer ISBN: 978-90-481-2643-9 (2011)

Pautler, B.G., Simpson, A. J., Simpson, M. J., Tseng, Li-H., Spraul, M., Dubnick, A. Sharp, M.J. and Fitzsimons, S.J. (2011) Detection and Structural Identification of Dissolved Organic Matter in Antarctic Glacial Ice at Natural Abundance by SPR-W5-WATERGATE 1H NMR Spectroscopy’, Environmental Science and Technology DOI: 10.1021/es200697c

Creation and Review Dates
DIF Creation Date: 2012-05-31
Last DIF Revision Date: 2016-01-27



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