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Remote Sens. 2017, 9(10), 1023; doi:10.3390/rs9101023

Comparison of Gas Emission Crater Geomorphodynamics on Yamal and Gydan Peninsulas (Russia), Based on Repeat Very-High-Resolution Stereopairs

1
Lomonosov Moscow State University, Faculty of Geography, Cryolithology and Glaciology Department, GSP-1, Leninskie Gory, 119991 Moscow, Russia
2
ScanEx Research and Development Center, Kiev highway p. 1. Business Park «Rumyantsevo», office 732, 108811 Moscow, Russia
3
Earth Cryosphere Institute Tyumen Scientific Centre SB RAS, 625000, PO Box 1230 Tyumen, Russia
4
University of Tyumen, International Institute of Cryology and Cryosophy, 6 Volodarskogo St., 625003 Tyumen, Russia
*
Authors to whom correspondence should be addressed.
Received: 19 August 2017 / Revised: 29 September 2017 / Accepted: 1 October 2017 / Published: 4 October 2017
(This article belongs to the Special Issue Remote Sensing of Arctic Tundra)
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Abstract

Gas Emission Craters (GEC) represent a new phenomenon in permafrost regions discovered in the north of West Siberia. In this study we use very-high-resolution Worldview satellite stereopairs and Resurs-P images to reveal and measure the geomorphic features that preceded and followed GEC formation on the Yamal and Gydan peninsulas. Analysis of DEMs allowed us to: (1) distinguish different terrain positions of the GEC, at the foot of a gentle slope (Yamal), and on an upper edge of a terrace slope; (2) notice that the formation of both Yamal and Gydan GECs were preceded by mound development; (3) measure a funnel-shaped upper part and a cylindrical lower part for each crater; (4) and measure the expansion and plan form modification of GECs. Although the general characteristics of both craters are similar, there are differences when comparing both key sites in detail. The height of the mound and diameter of the resulting GEC in Yamal exceeds that in Gydan; GEC-1 was surrounded by a well-developed parapet, while AntGEC did not show any considerable accumulative body. Thus, using very-high-resolution remote sensing data allowed us to discriminate geomorphic features and relief positions characteristic for GEC formation. GECs are a potential threat to commercial facilities in permafrost and indigenous settlements, especially because at present there is no statistically significant number of study objects to identify the local environmental conditions in which the formation of new GEC is possible. View Full-Text
Keywords: gas emission crater; cryogenic relief; Yamal and Gydan Peninsulas; satellite stereopair; digital elevation model gas emission crater; cryogenic relief; Yamal and Gydan Peninsulas; satellite stereopair; digital elevation model
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Kizyakov, A.; Zimin, M.; Sonyushkin, A.; Dvornikov, Y.; Khomutov, A.; Leibman, M. Comparison of Gas Emission Crater Geomorphodynamics on Yamal and Gydan Peninsulas (Russia), Based on Repeat Very-High-Resolution Stereopairs. Remote Sens. 2017, 9, 1023.

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