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This work presents some preliminary results of using oxygen isotopes ratio (?18O) for diagnostics of transient layer of upper permafrost of the coastal plains of Eastern Chukotka, NE Russia. Study methods included drilling of active layer and transition zone of permafrost and stable core isotope ratios analysis. The study revealed that ?18O values of ice from transient layer ranges from ?11.5? to ?14?. These values differ from those for massive ice beds and ice wedges in this region that allowed us to use stable i...

The paper presents the results of the research on contemporary permafrost dynamics associated with climate changes in Eastern Chukotka region (Chukotsky peninsula) and its impact on indigenous peoples? communities. The studies are based on the field monitoring works and geodetic measurements within several settlements as well as remote sensing data analysis and statistical results processing. The reasons of permafrost exogenous processes dynamics were indicated. The research was shown that the main threats for the...