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Alexander Ulyantsev, Natalya Polyakova, Ivan Trukhin, Yulia Parotkina, Oleg Dudarev and Igor Semiletov
This paper emphasises an ionic composition of the pore water of bottom sediments and subsea permafrost as an indicator of salinization of the thawed strata. Based on measurements of concentration of sodium (Na+), potassium (K+), calcium (Ca2+), and magne...
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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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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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Anatoly Gavrilov, Valentina Malakhova, Elena Pizhankova and Alexandra Popova
By using thermal mathematical modeling for the time range of 200,000 years ago, the authors have been studying the role the glaciation, covered the De Long Islands and partly the Anjou Islands at the end of Middle Neopleistocene, played in the formation ...
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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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Tatiana V. Matveeva, Valery D. Kaminsky, Anastasiia A. Semenova and Nikolai A. Shchur
The key factors controlling the formation and dynamics of relicpermafrost and the conditions for the stability of associated gas hydrates have been investigated using numerical modeling in this work. A comparison was made between two scenarios that diffe...
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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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Marek Kasprzak
Numerous hydrogeological studies on the coastal zone describe the intrusion of sea water inland, salting underground aquifers. The phenomenon is commonly observed in the coasts outside polar areas. However, the impact of sea water has so far not been an ...
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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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