Disparate energy sources for slow and fast Dansgaard–Oeschger cycles by D. Liebrand, D. Liebrand, D. Liebrand, A. T. M. de Bakker, H. J. H. Johnstone, C. S. Miller

“…Here, we identify the energy sources of DO cycles by applying a bispectral analysis to the North Greenland Ice Core Project (NGRIP) oxygen isotope (<span class="inline-formula"><i>δ</i>¹⁸</span>O<span class="inline-formula">_ice</span>) record; a 123 kyr long proxy record of air temperatures (<span class="inline-formula"><i>T</i>_air</span>) over Greenland. …”
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