Un essai de reconstitution du climat entre 40.000 BP et 10.000 BP à partir de séquences polliniques de tourbières et decarottes océaniques et glaciaires à haute résolution
- Title
- Un essai de reconstitution du climat entre 40.000 BP et 10.000 BP à partir de séquences polliniques de tourbières et decarottes océaniques et glaciaires à haute résolution
- Creator(s)
- Bosselin, Bruno
- Djindjian, François
- Date
- 2002
- Is Part Of
-
Archeologia e Calcolatori
- Volume
- 13
- Pages
- 275–300
- Language
- fra
- Rights
- CC BY-NC-ND 4.0
- Abstract
- The results of several sea- and ice-cores and pollen sequences of peat bogs, for the last 40,000 years, permits today to give evidence of palaeoclimatic oscillations of this period. A method of palaeoenvironment reconstitution, based on transfert functions computation, issued from pollen diagrams, is proposed. The method is building a palaeotemperature curve and a palaeohumidity curve, allowing to separate and correlate the two climatic components. A complete example of the method is developed with the data of the peat bog of Tenaghi-Philippon (Macedonia, Greece). All the analysed sequences (Tenaghi-Philippon, la Grande Pile, Banyoles, etc.), compared to sea-cores (KET 8004) and ice-cores (GRIPSummit, Greenland) confirm the evidence of mild and humid oscillations, and cold and humid oscillations, in a three parts structured sequence: the interpleniglacial (up to 28,000 BP), the late pleniglacial (between 28,000 BP and 13,500 BP), and the tardiglacial (between 13,500 BP and 10,000 BP). A numbering system, avoiding usage of ancient interstadials still to valid in their eponym sites, is proposed.
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