A stacked mixing sequence at the base of the Dye 3 core, Greenland

Details A stacked mixing sequence at the base of the Dye 3 core, Greenland A stacked mixing sequence at the base of the Dye 3 core, Greenland

Jun 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998georl..25.1943s&link_type=abstract

Geophysical Research Letters, Volume 25, Issue 11, p. 1943-1946

Physics

5

Hydrology: Glaciology, Meteorology And Atmospheric Dynamics: Paleoclimatology, Information Related To Geographic Region: Arctic Region

Scientific paper

This paper documents, by a detailed isotopic and gas composition study of the basal ice from the Dye 3 core, a large degree of flow-induced mixing at the ice sheet base. This mixing results most probably from circular motion in troughs of bedrock undulations and flow separations with some entrainment of the underlying ice. The measured distribution of isotopes and gases in the basal ice is the consequence of successive mixing events having occurred upglacier from the site in an area of very rough bedrock topography. The deformation produced makes it possible for the basal part of the ice sheet to cross the subglacial valley existing in the Dye 3 area.

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