Retrospective Analysis of Permafrost Landscape Evolution in Yakutia during the Holocene Warm Intervals

Fedorov, Alexander N.; Novopriezzhaya, Varvara A.; Fedorov, Nikolay A.; Konstantinov, Pavel; Samsonova, Vera V.

doi:10.3390/land9110463

Land

2020

DOI: 10.3390/land9110463

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Retrospective Analysis of Permafrost Landscape Evolution in Yakutia during the Holocene Warm Intervals

Alexander N. Fedorov

Varvara A. Novopriezzhaya

Nikolay A. Fedorov

et al.

Abstract: The observed global warming has significant impacts on permafrost. Permafrost changes modify landscapes and cause damage to infrastructure. The main purpose of this study was to estimate permafrost temperatures and active-layer thicknesses during the Holocene intervals with significantly warmer-than-present climates—the Atlantic (5500 years BP), Subboreal (3500 years BP) and Subatlantic (1000 years BP) optimums. Estimates were obtained using the ready-to-use models derived by G.M. Feldman, as well as mathemati… Show more

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2022

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Cited by 2 publications

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Permafrost Landscape Research in the Northeast of Eurasia

Fedorov

2022

Earth

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The results of permafrost landscape studies on northeastern Eurasia are presented in this review. The assessment of permafrost vulnerability to disturbances and global warming was the basis for the development of these studies. The permafrost landscape, considering the morphological features of the landscape and the permafrost together, is a timely object of study. The theoretical developments of Soviet physical geographers and landscape scientists are the basis for permafrost landscape studies. Over the past four decades, numerous permafrost landscape studies have been carried out on northeastern Eurasia (and Russia). Considering the results of these studies is the main objective of this article. The analysis of the problems of permafrost landscape identification, classification, and mapping and the study of their dynamics and evolution after disturbances and long-term development were carried out. Permafrost landscape studies employ the research methods of landscape science and geocryology. Environmental protection and adaptation of socioeconomic conditions to modern climate warming will determine the prospects for studying permafrost landscapes.

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Permafrost Landscape Research in the Northeast of Eurasia

Fedorov

2022

Earth

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Stable oxygen and hydrogen isotope ratios of the aufeis of the Viluy River valley

Vasil'chuk¹,

Budantseva²,

Ginzburg³

et al. 2022

Арктика И Антарктика

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The object of the study is the isotope composition of three aufeis (icing) in the Viluy River basin. Two of the three tested icing were located in the wide valleys of the streams-tributaries of the Viluy River, one on the flat bottom of the thermosuffusion sinkholes. The areas of studied icings did not exceed 30 sq. m., their thickness ranges from 45 to 100 cm. Stratification is recorded in the icings. The co-isotope diagram δ2H-δ18O shows that icing ice was formed from spring water and generally is isotopically “lighter” compared to the water of Kysyl-Yurekh stream and Viluy River. The isotope composition of the icing ice varies in a very narrow range: a) for icing 1 δ18O values vary from –19.3 to –20.9‰, δ2H values vary from –156.5 to –162.9‰; b) for icing 2 δ18O values vary from –19.7 to –22.4‰, δ2H values vary from –153.2 to –173.1‰; c) for icing 3 δ18O values vary from –19.8 to –22.7‰, δ2H values vary from –162.9 to –181.3‰. The similarity of the isotope profiles of icing 2 on Viluy and icing IB93-5 on Baylot Island and isotope profiles of icing 3 on Viluy and icing F192-6 on Baylot Island was noted, however, the scale of isotopic variations for icings on Baylot Island are 5-6 times greater than that of Viluy icings.

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Retrospective Analysis of Permafrost Landscape Evolution in Yakutia during the Holocene Warm Intervals

Cited by 2 publications

References 24 publications

Permafrost Landscape Research in the Northeast of Eurasia

Permafrost Landscape Research in the Northeast of Eurasia

Stable oxygen and hydrogen isotope ratios of the aufeis of the Viluy River valley

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