SPATIAL VARIABILITY OF SOIL TEMPERATURE AND ACTIVE-LAYER THICKNESS IN THE PERMAFROST REGIONS OF RUSSIA DURING THE LAST FIFTY YEARS

Artem Sherstiukov, Dmitry Streletskiy

In the proceedings of: GeoQuébec 2015: 68th Canadian Geotechnical Conference & 7th Canadian Permafrost Conference

Session: Permafrost Degradation II / Dégradation du pergélisol II

ABSTRACT: GTN-P CALM and soil temperature data collected by the Russian Weather Stations network were used to estimate spatial and temporal trends in ALT and soil temperature in the permafrost regions of Russia. Analysis of soil temperature at 3.2 m depth show an increasing trend over the last fifty years, with the most significant changes found in the north of West Siberia and the northern part of the East European Plain (0.02-0.04oC/y), and in the Central Siberian Plateau (0.04-0.05o C/y). Most locations experience 1-3 cm/y increase in ALT over the same period, although in some regions, such as southwest Yakutia, ALT decreased significantly. The last fifteen years (chosen to correspond with the majority of observations at the Russian CALM sites) are characterized by considerably higher rates of change, as compared to 1963-2013.

RÉSUMÉ: GTN-P CALM et les données de la température du sol recueillies par le réseau des stations météo de la Russie ont été utilisés pour estimer les tendances spatiales et temporelles de l'ALT et de la température du sol dans les régions de pergélisol de la Russie. Les analyses de la température du sol à 3,2 m de profondeur montrent une tendance à la hausse, au cours des cinquante dernières années, avec les changements les plus importants trouvés dans le nord de la Sibérie occidentale, la partie nord de la plaine d'Europe orientale (0.02-0.04oC/y), et le Plateau de Sibérie centrale (0.04-0.05oC/y). La plupart des endroits montrent 1-3 cm / an d™augmentation de l™ALT sur la même période, bien que dans certaines régions, comme la Yakoutie sud-ouest, l™ALT a diminué de manière significative. Les quinze dernières années (choisies pour correspondre à la majorité des observations sur les sites de CALM russes) sont caractérisées par des taux considérablement plus élevés de changement, par rapport à 1963-2013.

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Cite this article:
Artem Sherstiukov; Dmitry Streletskiy (2015) SPATIAL VARIABILITY OF SOIL TEMPERATURE AND ACTIVE-LAYER THICKNESS IN THE PERMAFROST REGIONS OF RUSSIA DURING THE LAST FIFTY YEARS in GEO2015. Ottawa, Ontario: Canadian Geotechnical Society.

@article{191,author = Artem Sherstiukov; Dmitry Streletskiy,title = SPATIAL VARIABILITY OF SOIL TEMPERATURE AND ACTIVE-LAYER THICKNESS IN THE PERMAFROST REGIONS OF RUSSIA DURING THE LAST FIFTY YEARS ,year = 2015}