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| Titel |
Wiggles and the void: highly resolved temporal 14C dates during the Younger Dyras |
| VerfasserIn |
Adam Sookdeo, Lukas Wacker, Florian Adolphi, Jürg Beer, Ulf Büntgen, Micheal Friedrich, Gerd Helle, Bernd Kromer, Raimund Muscheler, Daniel Nievergelt, Maren Pauly, Frederick Reinig |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250145026
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| Publikation (Nr.) |
 EGU/EGU2017-8918.pdf |
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| Zusammenfassung |
| The onset of the Younger Dyras (YD) around 12 900 BP is marked by an abrupt cooling
event lasting over 1000 years before a warming to present day temperatures. The
abrupt climate change during the YD could be a potential analog to modern day
global climate change. To understand the YD, accurate and complete paleoclimate,
paleoenvironmental and archaeological records are required. However, Northern
Hemisphere absolute tree-ring chronologies extend back to only 12 325 BP and floating
chronologies exist back to only 14 200 BP. Radiocarbon-dates for the absolute
tree-chronologies and floating chronologies are decadal averages and are weakened as there
are only 12 decadal dates for the absolute chronology between 12 325 - 11 900 BP.
Here we present quinquennial radiocarbon dates that fill the void between 12 325 -
11 900 BP using German trees that are part of the absolute tree-ring chronology.
In addition, we present annual and bi-annual 14C dates for floating chronologies
between approx. 12 850 to 12 500 BP. These new 14C dates show more wiggles and
structure that are not present in the decadal 14C dates of Intcal13. These wiggles
could offer new insight into carbon cycle and/or solar variability during the YD. |
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