Matthiessen, Jens; Baumann, Astrid (1997): Dinoflagellate cyst records from the East Greenland continental margin [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.707394, Supplement to: Matthiessen, J; Baumann, A (1997): Dinoflagellate cyst record from the East Greenland continental margin during the last 15,000 years: Implications for paleoceanographic reconstruction. In: Hass, H.C.; Kaminski, M.A. (eds.). Contribution to the Micropaleontology and Paleoceanography of the Northern North Atlantic. Grzybowski Foundation Special Publication, 5, 149-165
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Abstract:
Late Weichselian and Holocene dinoflagellate cyst assemblages have been investigated at two stations situated close to the modern Polar Front at the continental margin oft East Greenland. Both the concentrations of dinoflagelate cysts and the assemblage composition reflect changes in the surface water conditions, occurring in distinct steps during the past 15,000 years. Low concentrations of dinoflagellate cysts during Termination Ia suggest harsh environmental conditions, most probably caused by an extensive sea-ice cover and/or a high influx of low salinity meltwater. A surface water warming was recorded from 13,000 - 12,000 years BP, related to the inflow of warmer water trom the North Atlantic into the western Norwegian-Greenland Sea. The interval between Terminations la and Ib was characterized by a strong seasonality with an extensive sea-ice cover in winter and relatively warm surface waters in summer. At the transition to the Holocene, a reorganisation of the hydrography resulted in surface water conditions characteristic for the Holocene with three well-defined major water masses and oceanographic fronts The modern water mass conditions at both stations were established at the end of Termination Ib, around 6,400 to 6,800 years BP.
In general, the influence of colder surface waters was more pronounced at the location off Scoresby Sund throughout the Holocene. Arctic water had the strongest influence at both stations in the middle Holocene. A progressive cooling with an increase in sea-ice cover is time-transgressivelyrecorded at both stations during the Holocene, indicating that the Polar Front moved to its present position or that branches of the zonal currents expanded from the East Greenland shell eastward during tlie last 3,000 years.
Project(s):
Coverage:
Median Latitude: 74.057350 * Median Longitude: -7.613050 * South-bound Latitude: 70.116500 * West-bound Longitude: -17.694300 * North-bound Latitude: 77.998200 * East-bound Longitude: 2.468200
Date/Time Start: 1985-08-01T00:00:00 * Date/Time End: 1988-08-18T00:00:00
Event(s):
PS1295-5 (GIK21295-5 PS07/586) * Latitude: 77.998200 * Longitude: 2.468200 * Date/Time: 1985-08-01T00:00:00 * Elevation: -3112.0 m * Penetration: 10 m * Recovery: 5.63 m * Location: Fram Strait * Campaign: ARK-III/3 (PS07) * Basis: Polarstern * Method/Device: Gravity corer (Kiel type) (SL) * Comment: 6 core sections: 0-0.79, 0.79-1.78, 1.78-2.79, 2.79-3.79, 3.79-4.79, 4.79-5.63 m
PS1730-1 (GIK21730-1 PS13/224) * Latitude: 70.116500 * Longitude: -17.694300 * Date/Time: 1988-08-18T00:00:00 * Elevation: -1622.0 m * Penetration: 0.37 m * Recovery: 0.37 m * Location: Greenland Sea * Campaign: ARK-V/3b (PS13 GRÖKORT) * Basis: Polarstern * Method/Device: Giant box corer (GKG)
PS1730-2 (GIK21730-2 PS13/224) * Latitude: 70.116500 * Longitude: -17.694300 * Date/Time: 1988-08-18T00:00:00 * Elevation: -1622.0 m * Penetration: 13 m * Recovery: 7.79 m * Location: Greenland Sea * Campaign: ARK-V/3b (PS13 GRÖKORT) * Basis: Polarstern * Method/Device: Gravity corer (Kiel type) (SL) * Comment: 5 core sections: 2.82-3.82, 3.82-4.82, 4.82-5.86, 5.86-6.86, 6.86-7.79 m
Comment:
Further relevant data: Age model PS1295-4 see Jones and Keigwin (1988) data set: doi:10.1594/PANGAEA.51675, age model PS1730-2 see Nam et al. (1995) data set: doi:10.1594/PANGAEA.401194
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
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Datasets listed in this publication series
- Matthiessen, J; Baumann, A (1997): (Table 4) Dinoflagellate cysts from sediment core PS1295-5. https://doi.org/10.1594/PANGAEA.407138
- Matthiessen, J; Baumann, A (1997): (Table 3) Dinoflagellate cysts from sediment profile PS1730. https://doi.org/10.1594/PANGAEA.407125