Seasonal Variations of Chemical Constituents in Annual Layers of Greenland Deep Ice Deposits.

Chemical analysis of century-old ice from continuous 5 to 7 year intervals of three ice cores from south and central Greenland (Dye 3, Milcent and Crete) show maximum concentrations of Na, Mg, Ca, K and Al during early spring and minimum concentrations during late summer and early fall. Peak spring...

Full description

Bibliographic Details
Main Authors: Langway,C. C. , Jr., Cragin,James H., Klouda,G. A., Herron,M. M.
Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H
Format: Text
Language:English
Published: 1975
Subjects:
Physical Chemistry
Snow
Ice and Permafrost
*CHEMICAL ANALYSIS
*LAND ICE
*GREENLAND
MAGNESIUM
CALCIUM
LAYERS
SODIUM
DEPOSITS
SEASONAL VARIATIONS
ALUMINUM
GEOLOGIC AGE DETERMINATION
CONCENTRATION(CHEMISTRY)
POTASSIUM
SPRING SEASON
DEEP DEPTH
CORE SAMPLING
AUTUMN
Greenland
Dye 3
Dye-3
Ice
permafrost
Online Access:http://www.dtic.mil/docs/citations/ADA021319
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA021319
Description
Summary:Chemical analysis of century-old ice from continuous 5 to 7 year intervals of three ice cores from south and central Greenland (Dye 3, Milcent and Crete) show maximum concentrations of Na, Mg, Ca, K and Al during early spring and minimum concentrations during late summer and early fall. Peak spring values are as much as 10 times greater than fall values. Because of the large seasonal chemical variations, samples used for depth-age or annual deposition rate studies must represent accumulation from exactly one year or whole multiples of a year. The seasonal chemical variations seem promising as a new method of defining annual layers and thus dating old ice cores. (Author)

Similar Items