Hydrogen and oxygen isotopes in ground lce of Bykovsky Peninsula, North Siberia ...

• Main Authors: Meyer, Hanno, Dereviagin, Alexander Yu, Siegert, Christine, Hubberten, Hans-Wolfgang
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2002
• Subjects: Outcrop sample; Laptev Sea System LSS; laptev; Laptev Sea; lena delta; North Atlantic; Siberia
• Online Access: https://dx.doi.org/10.1594/pangaea.728530; https://doi.pangaea.de/10.1594/PANGAEA.728530

In wide areas of Northern Siberia, glaciers have been absent since the Late Pleistocene. Therefore, ground ice and especially ice wedges are used as archives for paleoclimatic studies. In the present study, carried out on the Bykovsky Peninsula, eastern Lena Delta, we were able to distinguish ice wedges of different genetic units by means of oxygen and hydrogen isotopes. The results obtained by this study on the Ice Complex, a peculiar periglacial phenomenon, allowed the reconstruction of the climate history with a subdivision of a period of very cold winters (60-55 ka), followed by a long stable period of cold winter temperatures (50-24 ka), Between 20 ka and I I ka, climate warming is indicated in stable isotope compositions, most probably after the Late Glacial Maximum. At that time, a change of the marine source of the precipitation from a more humid source to the present North Atlantic source region was assumed. For the Ice Complex, a continuous age-height relationship was established, indicating ... : Supplement to: Meyer, Hanno; Dereviagin, Alexander Yu; Siegert, Christine; Hubberten, Hans-Wolfgang (2002): Paleoclimate studies on Bykovsky Peninsula, North Siberia - hydrogen and oxygen isotopes in ground ice. Polarforschung, 70, 37-51 ...