title: Surface and deep ocean interactions during the cold climate event 8200 years ago.
abstract: Evidence from a North Atlantic deep-sea sediment core reveals that the largest climatic perturbation in our present interglacial, the 8200-year event, is marked by two distinct cooling events in the subpolar North Atlantic at 8490 and 8290 years ago. An associated reduction in deep flow speed provides evidence of a significant change to a major downwelling limb of the Atlantic meridional overturning circulation. The existence of a distinct surface freshening signal during these events strongly suggests that the sequenced surface and deep ocean changes were forced by pulsed meltwater outbursts from a multistep final drainage of the proglacial lakes associated with the decaying Laurentide Ice Sheet margin.
authors.affiliation: School of Environmental Sciences, University of East Anglia (UEA), Norwich, NR4 7TJ, UK.
authors.forename: Christopher R W
authors.initials: CR
authors.lastname: Ellison
authors.forename: Mark R
authors.initials: MR
authors.lastname: Chapman
authors.forename: Ian R
authors.initials: IR
authors.lastname: Hall