Preprints
https://doi.org/10.5194/cpd-4-1219-2008
https://doi.org/10.5194/cpd-4-1219-2008
27 Oct 2008
 | 27 Oct 2008
Status: this preprint was under review for the journal CP. A revision for further review has not been submitted.

The 8.2 ka cooling event related to extensive melting of the Greenland Ice Sheet

H. Ebbesen, A. Kuijpers, M. Moros, J. Lloyd, M.-S. Seidenkrantz, and S. Troelstra

Abstract. The North Atlantic cooling event at 8200 calibrated (cal) yr BP has been attributed to effects of an extensive freshwater discharge from the Hudson Strait (Barber et al., 1999; Leverington et al., 2002). Here we present sedimentary records from 5 cores collected from the Greenland shelf. These document high magnetic susceptibility (MS) values related to massive silt deposition, which is ascribed to large-scale melt water outflow from the Greenland Ice Sheet (GIS) spanning the centuries before 8200 cal yr BP and ending after 8000 cal yr BP. XRF trace element composition and foraminiferal fauna's provide additional evidence for excessive melt-water production, which can be related to early Holocene warming of the circum-Arctic region including Greenland. Planktonic foraminiferal fauna data from the southern Davis Strait indicate the widespread presence of negative salinity anomalies reaching far offshore Greenland. Significant freshening of surface waters around Greenland prior to 8200 cal yr BP must have led to a slowdown of the deep-water formation which thus implies that significant melting of the GIS should be taken into account when discussing driving mechanisms behind the 8200 cal yr BP cooling event.

Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
H. Ebbesen, A. Kuijpers, M. Moros, J. Lloyd, M.-S. Seidenkrantz, and S. Troelstra
 
Status: closed (peer review stopped)
Status: closed (peer review stopped)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Status: closed (peer review stopped)
Status: closed (peer review stopped)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
H. Ebbesen, A. Kuijpers, M. Moros, J. Lloyd, M.-S. Seidenkrantz, and S. Troelstra
H. Ebbesen, A. Kuijpers, M. Moros, J. Lloyd, M.-S. Seidenkrantz, and S. Troelstra

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