Voelker, AntjeAndrews, John T.Cochran, J. KirkBokuniewicz, Henry J.Yager, Patricia L.2020-07-232020-07-2320199780128130827http://hdl.handle.net/10400.1/14131Marine sediment cores that span the last 50,000 years frequently show considerable variability in sediment and biogeochemical variables. In the North Atlantic, a series of massive iceberg and meltwater events (Heinrich events) were sourced from Hudson Strait and the Laurentide Ice Sheet with a periodicity of ~7.2 ky and had significant impacts on the Atlantic meridional overturning circulation and the global hydrological and biogeochemical cycles. Some marine proxies show higher frequency, abrupt events, that may match the Dansgaard-Oeschger (D-O) oscillations. Predictable millennial-scale periodicities and associated forcings have proved elusive, and an observed ~1.5 ky cycle may be linked to stochastic resonance.engHeinrich eventsAbrupt climate changeGreenland interstadialsGreenland stadialsDansgaard-Oeschger eventsLast glacial cycleMarine Isotope Stage 3book part2020-07-23cv-prod-42342710.1016/b978-0-12-409548-9.11368-5