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At what depth is the Eemian layer expected to be found at NEEM?

  • Susanne L. Buchardt (a1) and Dorthe Dahl-Jensen (a1)
Abstract
Abstract

No continuous record from Greenland of the Eemian interglacial period (130–115 ka BP) currently exists. However, a new ice-core drill site has been suggested at 77.449 ˚ N, 51.056 ˚ Win north-west Greenland (North Eemian or NEEM). Radio-echo sounding images and flow model investigations indicate that an undisturbed Eemian record may be obtained at NEEM. In this work, a two-dimensional ice flow model with time-dependent accumulation rate and ice thickness is used to estimate the location of the Eemian layer at the new drill site. The model is used to simulate the ice flow along the ice ridge leading to the drill site. Unknown flow parameters are found through a Monte Carlo analysis of the flow model constrained by observed isochrones in the ice. The results indicate that the Eemian layer is approximately 60m thick and that its base is located approximately 100m above bedrock.

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References
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Buchardt S.L. and Dahl-Jensen D.. 2007. Estimating the basal melt rate at NorthGRIP using a Monte Carlo technique. Ann. Glaciol., 45, 137–142.
Chuah T.S., Gogineni S.P., Allen C and Wohletz B.. 1996. Radar thickness measurements over the northern part of the Greenland ice sheet. Lawrence KS. University of Kansas Center for Research Inc. Radar Systems and Remote Sensing Laboratory. (Technical Report. 10470-3.)
Dansgaard W. and Johnsen S.J.. 1969. A flow model and a time scale for the ice core from Camp Century, Greenland. J. Glaciol., 8(53), 215–223.
Greve R. 2005. Relation of measured basal temperatures and the spatial distribution of the geothermal heat flux for the Greenland ice sheet. Ann. Glaciol., 42, 424–432.
Hvidberg C.S., Keller K. and Gundestrup N.S.. 2002. Mass balance and ice flow along the north-northwest ridge of the Greenland ice sheet at NorthGRIP. Ann. Glaciol., 35, 521–526.
Johnsen S.J., Dahl-Jensen D., Dansgaard W. and Gundestrup N.S.. 1995. Greenland paleotemperatures derived from GRIP borehole temperature and ice core isotope profiles. Tellus B, 47(5), 624–629.
Ohmura A. and Reeh N.. 1991. New precipitation and accumulation maps for Greenland. J. Glaciol., 37(125), 140–148.
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Annals of Glaciology
  • ISSN: 0260-3055
  • EISSN: 1727-5644
  • URL: /core/journals/annals-of-glaciology
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