Age determination and stable isotope composition of sediment cores from the Arctic Ocean


Autoria(s): Nørgaard-Pedersen, Niels; Spielhagen, Robert F; Erlenkeuser, Helmut; Grootes, Pieter Meiert; Heinemeier, Jan; Knies, Jochen
Cobertura

MEDIAN LATITUDE: 80.964203 * MEDIAN LONGITUDE: 7.145651 * SOUTH-BOUND LATITUDE: 75.832800 * WEST-BOUND LONGITUDE: -14.022000 * NORTH-BOUND LATITUDE: 89.000000 * EAST-BOUND LONGITUDE: 179.950000 * DATE/TIME START: 1984-08-16T00:00:00 * DATE/TIME END: 1997-09-03T02:22:00

Data(s)

29/03/2003

Resumo

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.

Formato

application/zip, 12 datasets

Identificador

https://doi.pangaea.de/10.1594/PANGAEA.735802

doi:10.1594/PANGAEA.735802

Idioma(s)

en

Publicador

PANGAEA

Direitos

CC-BY: Creative Commons Attribution 3.0 Unported

Access constraints: unrestricted

Fonte

Supplement to: Nørgaard-Pedersen, Niels; Spielhagen, Robert F; Erlenkeuser, Helmut; Grootes, Pieter Meiert; Heinemeier, Jan; Knies, Jochen (2003): Arctic Ocean during the Last Glacial Maximum: atlantic and polar domains of surface water mass distribution and ice cover. Paleoceanography, 18(3), 1063, doi:10.1029/2002PA000781

Palavras-Chave #41; Age, 14C milieu/reservoir corrected (-400 yr); Age, dated; Age, dated, error to older; Age, dated, error to younger; Age, dated material; Age, dated standard deviation; Age dated; Age e -; Age e +; Age std dev; 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; average; Barents Sea; Calendar years; calibrated; Cal yrs; converted to calendar ages by the CALIB 4.1.2 calibration program (Stuiver and Remer, 1993; Stuiver et al., 1998) and, beyond 20.3 14C ka, by the age shift curve given by Voelker et al. (1998); Dated material; Depth; Depth, bottom/max; Depth, composite; DEPTH, sediment/rock; Depth, top/min; Depth bot; Depth comp; Depth top; Event; Foraminifera, planktic d13C; Foraminifera, planktic d18O; Foram plankt d13C; Foram plankt d18O; 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; Isotope ratio mass spectrometry; KAL; Kasten corer; Label; Lomonosov Ridge, Arctic Ocean; Makarov Basin; maximum; minimum; Morris Jesup Rise; MUC; MultiCorer; N. pachyderma s d18O; Nansen Basin; Neogloboquadrina pachyderma sinistral, d18O; 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; Reference; Reference/source; Sample code/label; SL; Svalbard; Yermak Plateau
Tipo

Dataset