NEW PERMAFROST FEATURE – DEP CRATER IN CENTRAL YAMAL (WEST SIBERIA, RUSIA) AS A RESPONSE TO LOCAL CLIMATE FLUCTUATIONS

NEW PERMAFROST FEATURE – DEP CRATER IN CENTRAL YAMAL (WEST SIBERIA, RUSIA) AS A RESPONSE TO LOCAL CLIMATE FLUCTUATIONS

This paper is based on field data obtained during short visits to a newly formed permafrost feature in a form of relatively narrow, deep crater. Excluding impossible and improbable versions of the crater’s development, the authors conclude that it originated from warmerground temperatures and an inc...

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Bibliographic Details
Main Authors: Marina O. Leibman, Alexander I. Kizyakov, Andrei V. Plekhanov, Irina D. Streletskaya
Format: Article
Language:English
Published: Lomonosov Moscow State University 2014-12-01
Series:Geography, Environment, Sustainability
Subjects:
yamal crater
tabular ground ice
cryopegs
gas hydrates
climate fluctuations
cryolithozone
pingo
pockmarks
Online Access:https://ges.rgo.ru/jour/article/view/67
Description
Summary:This paper is based on field data obtained during short visits to a newly formed permafrost feature in a form of relatively narrow, deep crater. Excluding impossible and improbable versions of the crater’s development, the authors conclude that it originated from warmerground temperatures and an increase in unfrozen water content, leading to an increase in pressure from gas emissions from permafrost and ground ice. This conclusion is also supported by known processes in the palaeo-geography of Yamal lakes and recent studies of gas-hydrate behavior and subsea processes in gas-bearing provinces.
ISSN:2071-9388
2542-1565

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