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Margarita Zyrianova, Timothy Collett and Ray Boswell
One of the most studied permafrost-associated gas hydrate accumulations in Arctic Alaska is the Eileen Gas Hydrate Trend. This study provides a detailed re-examination of the Eileen Gas Hydrate Trend with a focus on the gas hydrate accumulation in the we...
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Denis Chernykh, Natalia Shakhova, Vladimir Yusupov, Elena Gershelis, Boris Morgunov and Igor Semiletov
This paper presents the results of an acoustic survey carried out from the fast ice in the shallow waters of the East Siberian Arctic Shelf (ESAS) using a single beam echosounder. The aim of this paper is to demonstrate an improved approach to study seaf...
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Leopold I. Lobkovsky, Alexey A. Baranov, Igor A. Garagash, Mukamay M. Ramazanov, Irina S. Vladimirova, Yurii V. Gabsatarov, Dmitry A. Alekseev and Igor P. Semiletov
A correlation is observed between changes in the level of Earth?s seismic activity and increments of the atmospheric methane concentration over the past 40 years. Trigger mechanisms are proposed for methane emissions and glacier collapse in polar regions...
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Leopold Lobkovsky
A seismogenic trigger mechanism is proposed to explain the abrupt climate warming phases in the Arctic as a result of strong mechanical disturbances in the marginal region of the Arctic lithosphere. Those disturbances might have been caused by great eart...
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Evgeny Chuvilin, Valentina Ekimova, Dinara Davletshina, Natalia Sokolova and Boris Bukhanov
The active emission of gas (mainly methane) from terrestrial and subsea permafrost in the Russian Arctic has been confirmed by ample evidence. In this paper, a generalization and some systematization of gas manifestations recorded in the Russian Arctic i...
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Denis Chernykh, Vladimir Yusupov, Aleksandr Salomatin, Denis Kosmach, Natalia Shakhova, Elena Gershelis, Anton Konstantinov, Andrey Grinko, Evgeny Chuvilin, Oleg Dudarev, Andrey Koshurnikov and Igor Semiletov
Seeps found offshore in the East Siberian Arctic Shelf may mark zones of degrading subsea permafrost and related destabilization of gas hydrates. Sonar surveys provide an effective tool for mapping seabed methane fluxes and monitoring subsea Arctic perma...
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Natalia Shakhova, Igor Semiletov and Evgeny Chuvilin
This paper summarizes current understanding of the processes that determine the dynamics of the subsea permafrost?hydrate system existing in the largest, shallowest shelf in the Arctic Ocean; the East Siberian Arctic Shelf (ESAS). We review key environme...
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Evgeny Chuvilin, Valentina Ekimova, Boris Bukhanov, Sergey Grebenkin, Natalia Shakhova and Igor Semiletov
Destabilization of intrapermafrost gas hydrate is one possible reason for methane emission on the Arctic shelf. The formation of these intrapermafrost gas hydrates could occur almost simultaneously with the permafrost sediments due to the occurrence of a...
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Evgeny Chuvilin, Dinara Davletshina, Valentina Ekimova, Boris Bukhanov, Natalia Shakhova and Igor Semiletov
Destabilization of intrapermafrost gas hydrates is one of the possible mechanisms responsible for methane emission in the Arctic shelf. Intrapermafrost gas hydrates may be coeval to permafrost: they originated during regression and subsequent cooling and...
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Vladimir S. Yakushev
Experimental studies on clay sample saturation by methane hydrates proved that clay particles play an important role in the hydrate accumulation and decomposition processes in sediments. Depending on water content, the same clay mineral can serve as inhi...
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