Late Holocene environment and climatic changes in Ameralik Fjord, Southwest Greenland - evidence from the sedimentary record
| Autor: | Antoon Kuijpers, Karin G. Jensen, Naja Mikkelsen, Marit-Solveig Seidenkrantz, Steffen Aagaard-Sørensen, Maarten A. Prins, R. Endler, H. S. Møller |
|---|---|
| Přispěvatelé: | Climate Change and Landscape Dynamics, Marine Biogeology |
| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: |
010506 paleontology
Archeology 010504 meteorology & atmospheric sciences Fjord 01 natural sciences Bottom water Foraminifera Greenland Holocene climate change fjords sedimentary environment XRF Sea ice SDG 14 - Life Below Water Meltwater Holocene 0105 earth and related environmental sciences Earth-Surface Processes Global and Planetary Change geography geography.geographical_feature_category Ecology biology Paleontology biology.organism_classification Grønland Holocæn klima fjord sedimenter XRF Oceanography Benthic zone Hydrography Geology |
| Zdroj: | Møller, H S, Jensen, K G, Kuijpers, A, Aagaard-Sørensen, S, Seiedenkranz, M-S, Prins, M A, Endler, R & Mikkelsen, N 2006, ' Late Holocene environment and climatic changes in Ameralik Fjord, Southwest Greenland-evidence from the sedimentary record. ', The Holocene, vol. 16, no. 5, pp. 685-695 . https://doi.org/10.1191/0959683606hl963rp Møller, H S, Jensen, K G, Kuijpers, A, Aagaard-Sørensen, S, Seidenkrantz, M S L S, Endler, R, Prins, M & Mikkelsen, N 2006, ' Late-Holocene environment and climatic changes in Ameralik Fjord, southwest Greenland: evidence from the sedimentary record ', The Holocene, vol. 16, no. 5, pp. 685-695 . Aarhus University The Holocene, 16(5), 685-695. SAGE Publications Ltd |
| ISSN: | 0959-6836 |
| Popis: | Sedimentological and geochemical (XRF) data together with information from diatom and benthic foraminifera records of a 3.5 m long gravity core from Ameralik fjord, southern West Greenland, is used for reconstructing late Holocene environmental changes in this area. The changes are linked to large-scale North Atlantic ocean and climate variability. AMS 14C-dating of benthic foraminifera indicates that the sediment core covers the last 4400 years and may include the termination of the Holocene Thermal Maximum (HTM). The late HTM (4.4-3.2 ka BP) is characterized by high accumulation rates of fine (silty) sediments related to strong melt-water discharge from the Inland Ice. The benthic foraminiferal fauna demonstrates the presence of well-ventilated, saline bottom water originating from inflow of subsurface West Greenland Current water of Atlantic (Irminger Sea) origin. The hydrographic conditions were further characterised by limited sea ice probably related to a mild and relatively windy winter climate. After 3.2 ka BP lower fine-grained sedimentation rates, but a larger input from sea-ice rafted or aeolian coarse material prevailed. This can be related to colder atmospheric conditions with a decreased meltwater discharge and more widespread sea-ice cover in the fjord. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|