Physical Properties of the US ITASE Firn and Ice Cores from South Pole to Taylor Dome
Entry ID: meese_0538494

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Summary
Abstract: This award supports a project for physical properties research on snow pits and firn/ice cores with specific objectives that include stratigraphic analysis including determination of accumulation rates, annual layers, depth hoar, ice and wind crusts and rates of grain growth with depth. Studies of firn densification rates and how these parameters relate to the meteorology and climatology over the last 200 years of snow accumulation in Antarctica will also be investigated. The project will also determine the seasonality of accumulation by co-registration of stratigraphy and chemistry and determination of chemical species at the grain boundaries, how these may change with depth/densification (and therefore temperature), precipitation, and may affect grain growth. Fabric analyses will be made, including variation with depth, location on undulations and if any variation exists with climate/chemistry. The large spatial coverage of the US ITASE program offers the opportunity to determine how these parameters are affected by a large range of temperature, precipitation and topographic effects.

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Description: NSF Award #0538494 Abstract


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Description: Microstructural Location and Composition of Impurities in Polar Ice Cores


Location Keywords
CONTINENT > ANTARCTICA
GEOGRAPHIC REGION > POLAR


Science Keywords
CRYOSPHERE >GLACIERS/ICE SHEETS >ICE SHEETS    [Definition]
CRYOSPHERE >SNOW/ICE >SNOW DENSITY    [Definition]
CRYOSPHERE >SNOW/ICE    [Definition]
PALEOCLIMATE >ICE CORE RECORDS >ICE CORE AIR BUBBLES    [Definition]
PALEOCLIMATE >ICE CORE RECORDS >PARTICULATE MATTER    [Definition]
PALEOCLIMATE >ICE CORE RECORDS    [Definition]
CRYOSPHERE >SNOW/ICE >SNOW STRATIGRAPHY    [Definition]
CRYOSPHERE >SNOW/ICE >SNOW/ICE CHEMISTRY    [Definition]
CRYOSPHERE >GLACIERS/ICE SHEETS    [Definition]
CRYOSPHERE >GLACIERS/ICE SHEETS >FIRN    [Definition]


ISO Topic Category
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE


Platform
FIELD SURVEYS    [Information]
LABORATORY    [Information]
FIELD INVESTIGATION    [Information]


Instrument
MICROSCOPES    [Information]
SCANNING ELECTRON MICROSCOPES    [Information]


Project
NSF/OPP >Office of Polar Programs, National Science Foundation    [Information]
ITASE >INTERNATIONAL TRANS ANTARCTIC SCIENTIFIC EXPEDITION    [Information]


Keywords
U.S. ITASE
snow pits
firn core
firn
ice core
chemistry
stratigraphic analysis
firn densification
accumulation rates
annual layers
depth hoar
grain growth


Data Set Progress
IN WORK


Originating Center
Climate Change Institute, University of Maine, Orono


Data Center
National Snow and Ice Data Center    [Information]
Data Center URL: http://nsidc.org

Data Center Personnel
Name: NSIDC USER SERVICES
Phone: +1 (303) 492-6199
Fax: +1 (303) 492-2468
Email: nsidc at nsidc.org
Contact Address:
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA


NSIDC Antarctic Glaciological Data Center    [Information]
Data Center URL: http://nsidc.org/agdc/

Data Center Personnel
Name: NSIDC AGDC USER SERVICES
Phone: +1 (303) 492-6199
Fax: +1 (303) 492-2468
Email: nsidc at nsidc.org
Contact Address:
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA


Personnel
DEBRA MEESE
Role: INVESTIGATOR
Email: debra.meese at maine.edu
Contact Address:
Climate Change Institute
University of Maine
City: Orono
Province or State: ME
Postal Code: 04469
Country: USA


Publications/References
Spaulding, N, D.A. Meese, I. Baker, P.A. Mayewski, G.S. Hamilton, A new technique for firn grain-size measurement using SEM image analysis, Journal of Glaciology, 55(195):12-19.

Baker, I., K. Sieg, N. Spaulding and D. Meese. "Advanced Electron Microscopy Techniques for Studying Ice and Firn Cores," Proceedings of the 10th International Symposium on Antarctic Earth Sciences, 2007.

Baker, I., R.W. Obbard, D. Iliescu and D. Meese. "Microstructural Characterization of Firn," Proceedings of the 63rd Eastern Snow Conference, 2006.

Baker, I., R.W. Obbard, D. Iliescu and D. Meese. "Microstructural Characterization of Firn," Hydrological Processes, v.21, 2007, p. 1624.

Creation and Review Dates
DIF Creation Date: 2010-06-03
Last DIF Revision Date: 2010-07-20

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