Stable oxygen isotope record of epibenthic foraminifera and water samples of the Arctic Ocean ...

• Main Authors: Mackensen, Andreas, Nam, Seung-Il
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2014
• Subjects: Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo; Andreas; Arctic; Arctic Ocean; Greenland; Foraminifera*; Iceland; Nordic Sea
• Online Access: https://dx.doi.org/10.1594/pangaea.837010; https://doi.pangaea.de/10.1594/PANGAEA.837010

We determined d18OCib values of live (Rose Bengal stained) and dead epibenthic foraminifera Cibicidoides wuellerstorfi, Cibicides lobatulus, and Cibicides refulgens in surface sediment samples from the Arctic Ocean and the Greenland, Iceland, and Norwegian seas (Nordic Sea). This is the first time that a comprehensive d18OCib data set is generated and compiled from the Arctic Ocean. For comparison, we defined Atlantic Water (AW), upper Arctic Bottom Water (uABW), and Arctic Bottom Water (ABW) by their temperature/salinity characteristics and calculated mean equilibrium calcite d18Oequ from summer sea-water d18Ow and in situ temperatures. As a result, in the Arctic environment we compensate for Cibicidoides- and Cibicides-specific offsets from equilibrium calcite of -0.35 and -0.55 per mil, respectively. After this taxon-specific adjustment, mean d18OCib values plausibly reflect the density stratification of principle water masses in the Nordic Sea and Arctic Ocean. In addition, mean d18OCib from AW not only ... : Supplement to: Mackensen, Andreas; Nam, Seung-Il (2014): Taxon-specific epibenthic foraminiferal d18O in the Arctic Ocean: Relationship to water masses, deep circulation, and brine release. Marine Micropaleontology, 113, 34-43 ...