Browsing by Author "Atkinson, Margaret"

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    Labrador coastal current and productivity variations offshore Nain (Nunatsiavut) during the late Holocene
    (University of New Brunswick, 2024-06) Atkinson, Margaret; Limoges, Audrey; Normandeau, Alexandre
    The Labrador Coastal Current (LCC) has a strong influence on the coastal ecosystems and climate along the Labrador coast. With anthropogenic climate warming, it is not well known how changes in the LCC will affect future coastal ecosystems and associated subsistence resources that are crucial to northern communities. I present a high-resolution record of changes in the sea-surface and near-bottom conditions of the LCC during the last 3200 years based on multiple proxies extracted from a sediment core. The data show multi-centennial variations in the LCC, including significant changes in the sedimentary and biogenic proxies that were coeval with regional-scale changes in ocean and/or atmospheric circulation (i.e., North Atlantic Oscillation), and intervals of decreased LCC strength during intervals of inferred weaker Atlantic Meridional Overturning Circulation and polar water influence. This study highlights the complex nature of the LCC and provides baseline data for the calibration of climate models.