TY  - JOUR
AU  - Landais A, Dreyfus G.
PY  - 2010//
TI  - What drives the millennial and orbital variations of δ18Oatm?
T2  - Quat Sci Rev
JO  - Quaternary Science Reviews
SP  - 235
EP  - 246
VL  - 29
IS  - 1-2
N2  - The isotopic composition of atmospheric oxygen (δ18Oatm) is a complex marker that integrates changes in global sea-level, water cycle, and biosphere productivity. A strong signature of orbital precession has been identified leading to the use of low-resolution measurements of δ18Oatm to date ice core records. However, the drivers of these δ18Oatm variations are still poorly known. Here, we combine records of millennial and orbital scale variations on the NorthGRIP, Vostok, and EPICA Dome C (EDC) ice cores to explore the origin of δ18Oatm variations. We show that, superimposed on the dominant precession signal, millennial δ18Oatm variations record systematic decreases during warm phases of the Dansgaard-Oeschger events and systematic increases during the cold phases.
SN  - 0277-3791
UR  - http://dx.doi.org/10.1016/j.quascirev.2009.07.005
N1  - exported from refbase (http://publi.ipev.fr/polar_references/show.php?record=2713), last updated on Wed, 03 Jul 2024 22:03:12 +0200
ID  - LandaisA2010
ER  -