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  • 1. Kuzmina, N. P.
    et al.
    Rudels, B.
    Zhurbas, N. V.
    Structure of intrusions and fronts in the deep layer of the Eurasian basin and Makarov basin (Arctic)2013In: Oceanology (Washington. 1965), ISSN 0001-4370, E-ISSN 0001-4370, Vol. 53, no 4, p. 410-421Article in journal (Refereed)
    Abstract [en]

    Numerous CTD data obtained in the Eurasian and Makarov basins in the Arctic during the Polarstern (1996), Oden, and Louis S. St. Laurent (1994) international polar expeditions are analysed to describe fronts and intrusions observed in the deep layer (600-1300 m). The hydrological parameters were estimated from available CTD data, which made it possible to identify different types of fronts (baroclinic, thermohaline, and compound types of fronts) and analyze intrusive layering taking into account the peculiarities of the thermohaline structure of fronts. The field data are interpreted using an interleaving model describing the formation of intrusions on the baroclinic and pure thermohaline fronts under conditions of absolutely stable stratification. It is assumed that differential mixing is the main instability mechanism. Estimates of the vertical and lateral diffusivities in the frontal zones of the deep Arctic layer are presented.

  • 2. Lobkovsky, L. I.
    et al.
    Nikiforov, S. L.
    Ananiev, R. A.
    Khortov, A. V.
    Semiletov, I. P.
    Jakobsson, M.
    Dmitrievskiy, N. N.
    Recent geological-geomorphological processes on the east Arctic shelf: Results of the expedition of the icebreaker Oden in 20142015In: Oceanology (Washington. 1965), ISSN 0001-4370, E-ISSN 0001-4370, Vol. 55, no 6, p. 926-929Article in journal (Refereed)
    Abstract [en]

    Results obtained by the International Arctic marine expedition (SWERUS-C3) in June to October of 2014, using advanced seismoacoustic equipment, confirmed the wide distribution of potentially hazardous exogenic geological-geomorphological natural processes on the eastern Arctic shelf of Russia. In Arctic seas, serious hazards are represented by ice exaration and its consequences must be taken into consideration when developing oil and gas fields on the shelf. Many areas with anomalous gas saturation of sediments and gas seeps established in the region under consideration may represent global hazard: further increases in methane emissions may represent global risks. The minimization of these and other geological risks in constructing different technogenic objects on the shelf should be a first-priority task in the economic development of the Arctic region.

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