New data from the 40 year old Dye3 core

Thomas Blunier, Janani Venkatesh, David Aaron Soestmeyer,Jesper Baldtzer Liisberg,Rachael Rhodes,James Andrew Menking, Jeffrey P. Severinghaus, Meg Harlan,Helle Astrid Kjær,Paul Vallelonga

crossref(2020)

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摘要
<p>The Dye3 core was drilled at Dye3 (65&#176;11&#8217;N, 43&#176;50&#8217;W) in 1979 &#8211; 1981. The core has been analyzed for numerous components over the last decades. We measured remaining sections, the Younger Dryas and a larger portion of the last glacial, in a continuous flow setup in fall 2019. Here we focus on gas measurements. We measured methane, &#948;<sup>15</sup>N, &#948;<sup>40</sup>Ar, and the elemental ratio of Ar and N<sub>2</sub>. We present the continuous flow setup for measuring those components in parallel and first results with a focus on the exact timing of changes in methane and &#948;<sup>15</sup>N and &#948;<sup>40</sup>Ar at the Younger Dryas and Dansgaard-Oeschger transitions. </p>
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