Investigating the onset of the Younger Dryas by high temporal resolution of radiocarbon

Sookdeo, A, Wacker, L, Büntgen, U, Friedrich, M, Helle, G, Kromer, B, Pauly, M and Reinig, F (2016) Investigating the onset of the Younger Dryas by high temporal resolution of radiocarbon. In: Goldschmidt, 2016, Yokohama, Japan.

Abstract

Around 12700 BP marks the onset of abrubt climate change, the Younger Dryas (YD). Near the onset of YD there is a sharp rapid increase atmospheric radiocarbon (14C). Atmospheric 14C is affected by the changes in solar activity, the carbon cycle and Earth`s magnetic field. There is little evidence to support a change in the Earth`s magnetic field nor changes in the carbon cycle via deep ocean circulation caused the increase in atmospheric 14C. Therefore, it has been theorized that the increase in atmospheric 14C is due to an increase in cosmic rays reaching earth because a weaker magnetic field from the sun. A weaker sun would aid in explaining why there was a rapid shift to colder tempertures at the start of YD. At the Laboratory of Ion beam Physics we are measuring tree-rings in high temporal resolution between 13000-12500 BP to better understand varitions in atmoshpheric 14C during the YD.

Item Type: Conference or Workshop Item (Paper)
Divisions: School of Science
Date Deposited: 02 Dec 2019 15:58
Last Modified: 07 Feb 2020 18:07
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