noaa-icecore-17876
GRIP Ice Core Basal Ice Gas Concentrations
Souchez, R.; Lemmens, M.; Chappellaz, J.A.
GRIP Ice Core Basal Ice Gas Concentrations
1997-11-30
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/17876
Investigator
R.
Souchez
Investigator
M.
Lemmens
Investigator
J.A.
Chappellaz
earth science
paleoclimate
climate forcing|ice cores
methane,bulk atmosphere,null,parts per million,null,climate forcing|ice cores,null,null,N,null
earth science
paleoclimate
ice cores
oxygen gas,bulk atmosphere,null,percent,null,ice cores,null,null,N,null
earth science
paleoclimate
ice cores
air content,bulk atmosphere,null,milliliter per gram,null,ice cores,null,null,N,null
earth science
paleoclimate
climate forcing|ice cores
carbon dioxide,bulk atmosphere,null,parts per million,null,climate forcing|ice cores,null,null,N,null
earth science
paleoclimate
ice cores
depth,null,null,meter,null,ice cores,null,null,N,null
earth science
paleoclimate
ice cores
nitrogen gas,bulk atmosphere,null,percent,null,ice cores,null,null,N,null
earth science
paleoclimate
ice core
atmospheric gas
geoscientificInformation
248000 cal yr BP
230000 cal yr BP
Complete
72.58
72.58
-37.63
-37.63
Continent
North America
Greenland
GRIP>LATITUDE 72.58>LONGITUDE -37.63
None
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English
DOC/NOAA/NESDIS/NCEI
National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
https://www.ncdc.noaa.gov/data-access/paleoclimatology-data
DATA Center Contact
Bruce
Bauer
bruce.a.bauer@noaa.gov
paleo@noaa.gov
303-497-6280
303-497-6513
325 Broadway, E/NE31
Boulder
CO
80305-3328
USA
online
ASCII
R. Souchez, M. Lemmens, J. Chappellaz
1995
Flow-induced mixing in the GRIP basal ice deduced from the CO2 and CH4 records
Geophysical Research Letters
22
1
41-44
10.1029/94GL02863
http://onlinelibrary.wiley.com/enhanced/doi/10.1029/94GL02863
This paper documents a larger degree of mixing in ice near the bottom of an ice sheet than described, or suspected, previously. It shows, thanks to favourable circumstances due to CO2 and CH4 production underneath the ice, that flow-induced mixing within the basal ice has taken place at the scale of a few centimeters in the GRIP core. Such a mechanism must be considered when interpreting the ice properties in the bottom part of ice sheets and must be taken into account as a potential process of layer disruption in the low levels of the Central Greenland ice cores.
STUDY NOTES: This file contains gas data from the GRIP basal ice.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/greenland/summit/grip/gases/gasbas.txt
Data File; GRIP Basal Ice Gas Concentrations
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11