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Sporadic permafrost on the Kola Peninsula to the south of the Arctic circleтезисы доклада
- Авторы: Romanenko F.A., Baranskaya A.V., Lugovoy N.N., Shabanova N.N., Shilovtseva O.A.
- Сборник: 5th European Conference on Permafrost, Book of Abstract
- Тезисы
- Год издания: 2018
- Место издания: Laboratoire EDYTEM, CNRS, Université Savoie Mont-Blanc
- Первая страница: 861
- Последняя страница: 862
- Аннотация: Areas of the southern Kola Peninsula where sporadic permafrost had been found back in the 1930s, were revisited in 2015 and 2017. It has been found that preservation of permafrost mainly depends on peat thickness: in large and thick peatlands where it exceeds 2 m, frozen peat is well preserved through the XX-beginning of XXI century. However, in palsa with smaller peat thickness, no permafrost was found, while traces of its former presence and degradation (polygons) are observed. The climatic conditions which allowed preservation of sporadic permafrost are mainly characterized with greater air temperature increase during the winter months, allowing frozen deposits to remain preserved. In summer, air temperature increase exists as well, however, it is smaller than during the cold season.
- Добавил в систему: Шабанова Наталья Николаевна