(Table S1) Neodymium isotopic results from ODP Site 172-1063 ...

• Main Authors: Gutjahr, Marcus, Lippold, Jörg
• Format: Dataset
• Language: English
• Published: PANGAEA 2011
• Subjects: DEPTH, sediment/rock; AGE; Neodymium-143/Neodymium-144 ratio; Neodymium-143/Neodymium-144 ratio, error; ε-Neodymium; Number of measurements; Composite Core; Leg172; Joides Resolution; Ocean Drilling Program ODP; North Atlantic
• Online Access: https://dx.doi.org/10.1594/pangaea.830725; https://doi.pangaea.de/10.1594/PANGAEA.830725

The Atlantic Meridional Overturning Circulation (AMOC) plays an important role in the Northern Hemisphere climate system. Significant interest went into the question of how excessive freshwater input through melting of continental ice can affect its overturning vigor and, hence, heat supply, to higher northern latitudes. Such forcing can be tested by investigating its behavior during extreme iceberg discharge events into the open North Atlantic during the last glacial period, the so-called Heinrich events (HE). Here we present neodymium (Nd) isotope compositions of past seawater, a sensitive chemical water mass tag, extracted from sediments of Ocean Drilling Program Site 1063 in the western North Atlantic (Bermuda Rise), covering the period surrounding HE 2, the Last Glacial Maximum, and the early deglaciation. These data are compared with a record of the kinematic circulation tracer (231Pa/230Th)xs extracted from the same sediment core. Both tracers indicate significant circulation changes preceding intense ... : Supplement to: Gutjahr, Marcus; Lippold, Jörg (2011): Early arrival of Southern Source Water in the deep North Atlantic prior to Heinrich event 2. Paleoceanography, 26(2), PA2101 ...