Aldahan, Ala; Ning, Shi; Possnert, Göran; Backman, Jan; Boström, Kurt (1997): Age determination, Beryllium analysis, and mineral composition of two sediment cores of the Arctic Ocean covering the past 350 kyr [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.696118
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Abstract:
Records of 10Be, 9Be, mineralogy and grain size were obtained from two cores collected by the Polarstern Expedition 1991 in the southern Nansen Basin (PS2213-6) and the Yermak Plateau (PS2208-2). The accumulation of sediments examined started from about 350 kyr (BP), and includes relatively well defined trends of Be isotopes coincident with interglacial/glacial climatic cycles. Sediment accumulation rates (g/cm**2/kyr) were higher during glacial periods and our estimates of 1.0 and 2.5 cm/kyr sedimentation rates during the Holocene agree with other estimates for the southern Nansen Basin and the Yermak Plateau, respectively. The variations in 10Be concentration (atoms/g) and flux (atoms/cm**2/kyr) are inverse to sediment flux, where high 10Be concentration and flux are associated with generally low sedimentation/accumulation rates during interglacial periods. We hypothesize that climate plays an important role in 10Be records from the Arctic sediments, reflecting the intensity and distribution of the ice mass on land and the ocean.
Related to:
Aldahan, Ala; Ning, Shi; Possnert, Göran; Backman, Jan; Boström, Kurt (1997): 10Be records from sediments of the Arctic Ocean covering the past 350 ka. Marine Geology, 144(1-3), 147-162, https://doi.org/10.1016/S0025-3227(97)00084-4
Coverage:
Median Latitude: 82.056650 * Median Longitude: 6.404450 * South-bound Latitude: 80.473000 * West-bound Longitude: 4.603700 * North-bound Latitude: 83.640300 * East-bound Longitude: 8.205200
Date/Time Start: 1991-09-24T00:00:00 * Date/Time End: 1991-09-30T00:00:00
Event(s):
PS2208-2 (PS19/234) * Latitude: 83.640300 * Longitude: 4.603700 * Date/Time: 1991-09-24T00:00:00 * Elevation: -3681.0 m * Penetration: 6.83 m * Recovery: 6.85 m * Location: Nansen Basin * Campaign: ARK-VIII/3 (PS19 ARCTIC91) * Basis: Polarstern * Method/Device: Giant piston corer (GPC) * Comment: 9 core sections: 0-0.67, 0.67-1.58, 1.58-2.6, 2.6-3.62, 3.62-4.66, 4.66-5.67, 5.67-6.68, 6.68-6.85, 6.85-8.79 m; TWC: 132 cm
PS2213-2 (PS19/246) * Latitude: 80.473000 * Longitude: 8.205200 * Date/Time: 1991-09-30T00:00:00 * Elevation: -897.0 m * Penetration: 0.3 m * Recovery: 0.3 m * Location: Yermak Plateau * Campaign: ARK-VIII/3 (PS19 ARCTIC91) * Basis: Polarstern * Method/Device: Giant box corer (GKG)
PS2213-6 (PS19/246) * Latitude: 80.473000 * Longitude: 8.205200 * Date/Time: 1991-09-30T00:00:00 * Elevation: -897.0 m * Penetration: 13.17 m * Recovery: 13.03 m * Location: Yermak Plateau * Campaign: ARK-VIII/3 (PS19 ARCTIC91) * Basis: Polarstern * Method/Device: Giant piston corer (GPC) * Comment: 15 core sections: 0-0.25, 0.25-1.24, 1.24-2.27, 2.27-2.89, 2.89-3.73, 3.73-4.75, 4.75-5.77, 5.77-6.75, 6.75-7.77, 7.77-8.79, 8.79-9.79, 9.79-10.77, 10.77-11.78, 11.78-12.8, 12.8-13.03 m; TWC: 161 cm
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
6 datasets
Download Data
Datasets listed in this publication series
- Aldahan, A (1997): Age determination of sediment core PS2208-2. https://doi.org/10.1594/PANGAEA.695989
- Aldahan, A (1997): Beryllium of sediment core PS2208-2. https://doi.org/10.1594/PANGAEA.696001
- Aldahan, A (1997): Beryllium analysis and mineral composition of sediment core PS2208-2. https://doi.org/10.1594/PANGAEA.696116
- Aldahan, A (1997): Age determination of sediment core PS2213. https://doi.org/10.1594/PANGAEA.695990
- Aldahan, A (1997): Beryllium of sediment core PS2213-6. https://doi.org/10.1594/PANGAEA.696002
- Aldahan, A (1997): Beryllium analysis and mineral composition of sediment core PS2213-6. https://doi.org/10.1594/PANGAEA.696117