MEASUREMENT OF NATURAL PARTICULATE FALLOUT ONTO HIGH POLAR ICE SHEETS. PART II. ANTARCTIC AND GREENLAND CORES.
COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H
Pagination or Media Count:
Greenland and Antarctica ice samples were analyzed for size distribution of the particlate content. Samples are from Little America V, age 800 yr Byrd Station, age 1340 yr Byrd Station, age 450 yr and Site 2, Greenland, age 220 yr. Particle concentration is lower in the younger Byrd samples than in the older ones. Concentration was seen to vary cyclically with depth. Annual accumulation determined by peak to peak measurement on the dust concentration profiles compares favorably with that determined by surface stratigraphy. The results indicate that winter snow is dirtier, mean particle size changes as a result of relatively discrete addition of well sorted fallout to the log-normal distribution, and that annual accumulation of dust was about 8 times higher in Greenland than in Antarctica at the times represented by the samples studied. Author
- Snow, Ice and Permafrost
- Test Facilities, Equipment and Methods