Publication Date:
2024-07-01
Description:
On the basis of 52 sediment cores, analyzed and dated at high resolution, the paleoceanography and climate of the Last Glacial Maximum (LGM) were reconstructed in detail for the Fram Strait and the eastern and central Arctic Ocean. Sediment composition and stable isotope data suggest three distinct paleoenvironments: (1) a productive region in the eastern to central Fram Strait and along the northern Barents Sea continental margin characterized by Atlantic Water advection, frequent open water conditions, and occasional local meltwater supply and iceberg calving from the Barents Sea Ice Sheet; (2) an intermediate region in the southwestern Eurasian Basin (up to 84-85°N) and the western Fram Strait characterized by subsurface Atlantic Water advection and recirculation, a moderately high planktic productivity, and a perennial ice cover that breaks up only occasionally; and (3) a central Arctic region (north of 85°N in the Eurasian Basin) characterized by a low-salinity surface water layer and a thick ice cover that strongly reduces bioproduction and bulk sedimentation rates. Although the total inflow of Atlantic Water into the Arctic Ocean may have been reduced during the LGM, its impact on ice coverage and halocline structure in the Fram Strait and southwestern Eurasian Basin was strong.
Keywords:
41; Amundsen Basin; Antarctic Ocean; Arctic Ocean; ARK-II/4; ARK-III/3; ARK-IV/3; ARK-IX/3; ARK-IX/4; ARK-VII/1; ARK-VIII/2; ARK-VIII/3; ARK-XIII/2; ARK-XIII/3; Barents Sea; Fram-I; FramI/4; FramI/7; Fram Strait; Gakkel Ridge, Arctic Ocean; GC; Giant box corer; GIK21294-4 PS07/584; GIK21295-4 PS07/586; GIK21297-4 PS07/588; GIK21308-3 PS07/601; GIK21314-3 PS07/608; GIK21527-10 PS11/371-10; GIK21528-7 PS11/372-7; GIK21533-3 PS11/412; GIK21535-5 PS11/430-5; GIK21535-8 PS11/430-8; GIK21894-7 PS17/069; GIK21906-1 PS17/081; GIK21906-2 PS17/081; GIK23230-1 PS05/416; GKG; Glacial Atlantic Ocean Mapping; GLAMAP; GLAMAP2000; Gravity corer; Gravity corer (Kiel type); Greenland Sea; Ice drift station; KAL; Kasten corer; Lomonosov Ridge, Arctic Ocean; Makarov Basin; Morris Jesup Rise; MUC; MultiCorer; Nansen Basin; Northeast Greenland; NP90-12; NP90-36; NP90-39; OD-009-11; OD-010-04; OD-031-03; OD-036-04; OD-041-04; Oden; ODEN-96; Polarstern; PS05; PS07; PS11; PS1230-1; PS1294-4; PS1295-4; PS1297-4; PS1308-3; PS1314-3; PS1527-10; PS1528-7; PS1533-3; PS1535-5; PS1535-8; PS17; PS1894-7; PS19/084; PS19/086; PS19/100; PS19/112; PS19/157; PS19/160; PS19/165; PS19/167; PS19/175; PS19/176; PS19/178; PS19/181; PS19/186; PS19/189; PS19/200; PS19/206; PS19/210; PS19/218; PS19/228; PS19/234; PS19/241; PS19/245; PS1906-1; PS1906-2; PS19 ARCTIC91; PS19 EPOS II; PS2122-2; PS2123-2; PS2129-1; PS2138-1; PS2163-1; PS2166-2; PS2170-4; PS2172-2; PS2177-1; PS2178-2; PS2179-1; PS2180-1; PS2185-3; PS2186-5; PS2193-2; PS2195-4; PS2196-2; PS2200-2; PS2206-4; PS2208-1; PS2210-3; PS2212-3; PS2423-4; PS2424-1; PS2446-4; PS26/148; PS26/149; PS26 NEW; PS27; PS27/020; PS2837-5; PS2837-6; PS2876-1; PS2876-2; PS2887-1; PS2887-2; PS44; PS44/065; PS45; PS45/029; PS45/058; SL; Svalbard; Yermak Plateau
Type:
Dataset
Format:
application/zip, 12 datasets
