Alkenone analyses of sediment core MSM45/19_2 ...

• Main Authors: Lochte, Annalena Antonia, Schneider, Ralph R
• Format: Dataset
• Language: English
• Published: PANGAEA 2022
• Subjects: 8.2 ka event; Alkenone; Holocene; Labrador Sea; SST; DEPTH, sediment/rock; Alkenone, C374; Alkenone, sum; Gravity corer; MSM45; Maria S. Merian; Canada; Labrador Shelf; Northwest Atlantic; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.945742; https://doi.pangaea.de/10.1594/PANGAEA.945742

The presented data originates from the 1306cm long gravity core MSM45-19-2 (58°45.68 N, 61°56.25 W, 202m water depth) taken during R/V Maria S. Merian cruise MSM45 in August 2015 at 202 m water depth on the northern Labrador Shelf, northeast Canada, northwest Atlantic. In order to fully understand the dynamics that contributed to the establishment of modern Labrador Sea circulation, detailed reconstructions of the major paleoceanographic changes through the Holocene are critical. Therefore, this study aims to provide new information on bottom (i.e. subsurface) water mass composition as well as on changes in primary productivity and sea-ice conditions in the LC during the Holocene. Reconstructions are based on alkenone biomarker concentrations to provide a better understanding of the dynamics of different water masses that contributed to the establishment of modern Labrador Sea. circulation.Long-chain alkenones are biosynthesized by haptophytes (e.g. the coccolithophorid Emiliania huxleyi) living in surface ...