IEDA
Project Information
Collaborative Research: Studies of Trapped Gases in Firn and Ice from Antarctic Deep Ice Cores
Start Date:
1997-08-15
End Date:
2002-04-30
Description/Abstract
This award is for support for a program to make high resolution studies of variations in the concentration of methane, the oxygenisotope composition of paleoatmospheric oxygen, and the total gas content of deep Antarctic ice cores. Studies of the concentration and isotopic composition of air in the firn of the Antarctic ice sheet will also be continued. One objective of this work is to use the methane concentration and oxygen-isotope composition of oxygen of air in ice as time-stratigraphic markers for the precise intercorrelation of Greenland and Antarctic ice cores as well as the correlation of ice cores to other climatic records. A second objective is to use variations in the concentration and interhemispheric gradient of methane measured in Greenland and Antarctic ice cores to deduce changes in continental climates and biogeochemistry on which the atmospheric methane distribution depends. A third objective is to use data on the variability of total gas content in the Siple Dome ice core to reconstruct aspects of the glacial history of West Antarctica during the last glacial maximum. The fourth objective is to participate in collaborative studies of firn air chemistry at Vostok, Siple Dome, and South Pole which will yield much new information about gas trapping in ice as well as the concentration history and isotopic composition of greenhouse gases, oxygen, trace biogenic gases and trace anthropogenic gases during the last 100 years.
Personnel
Person Role
Thompson, Lonnie G. Investigator
Blunier, Thomas Co-Investigator
Fluckiger, Jacqueline Co-Investigator
Brook, Edward J. Investigator
Funding
Antarctic Glaciology Award # 9714687
AMD - DIF Record(s)
Data Management Plan
None in the Database
Datasets
Repository Title (link) Status
USAP-DC Byrd Ice Core Microparticle and Chemistry Data exist