Age model, radiocarbon dates and dinoflagellate cyst measurements from sediment core DA06-139G ...
A marine sediment core from Vaigat in Disko Bugt, West Greenland, has been analysed in terms of lithology, dinoflagellate cysts and foraminifera in order to evaluate the influence of oceanographic variability on West Greenland glacier stability. The data show that during the past 5200 years the Atla...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
PANGAEA
2010
|
| Subjects: | |
| Online Access: | https://dx.doi.org/10.1594/pangaea.785470 https://doi.pangaea.de/10.1594/PANGAEA.785470 |
| Summary: | A marine sediment core from Vaigat in Disko Bugt, West Greenland, has been analysed in terms of lithology, dinoflagellate cysts and foraminifera in order to evaluate the influence of oceanographic variability on West Greenland glacier stability. The data show that during the past 5200 years the Atlantic foraminiferal abundance in the subsurface waters of the West Greenland Current (WGC) episodically increased, indicating periods of increases in the inflow of subsurface warm Atlantic water at 2000 - 1500 cal. yr BP and 1300 cal. yr BP as well as periods of less pronounced increased bottom-water temperatures around 4700 - 4000 cal. yr BP, 3100 - 2800, 2600, 1000 - 800, 500 - 400, and at 200 cal. yr. The sedimentological and dinoflagellate cyst data indicate that these episodes with enhanced advection of Irminger Sea-derived waters are accompanied by increased iceberg rafting, which we link to increased iceberg calving in relation to destabilization of the Jakobshavn Isbrae. The long-term trend in the data ... : Supplement to: Andresen, Camilla S; McCarthy, David J; Dylmer, Christian Valdemar; Seidenkrantz, Marit-Solveig; Kuijpers, Antoon; Lloyd, Jerry M (2010): Interaction between subsurface ocean waters and calving of the Jakobshavn Isbræ during the late Holocene. The Holocene, 21(2), 211-224 ... |
|---|