Natural ring structures on the Baikal ice cover: analysis of experimental data and mathematical modeling-Reference-Cited by-同舟云学术

Natural ring structures on the Baikal ice cover: analysis of experimental data and mathematical modeling

Published:2018-11-01 Issue:11 Volume:59 Page:1514-1525
ISSN:1068-7971
Container-title:Russian Geology and Geophysics
language:en
Short-container-title:

Author:

Granin N.G.¹,Mizandrontsev I.B.¹,Kozlov V.V.²,Tsvetova E.A.³,Gnatovskii R.Yu.¹,Blinov V.V.¹,Aslamov I.A.¹,Kucher K.M.¹,Ivanov V.G.¹,Zhdanov A.A.¹

Affiliation:

1. Limnological Institute, Siberian Branch of the Russian Academy of Sciences, ul. Ulan-Batorskaya 3, Irkutsk, 664033, Russia

2. V.M. Matrosov Institute for System Dynamics and Control Theory, Siberian Branch of the Russian Academy of Sciences, ul. Lermontova 134, Irkutsk, 664033, Russia

3. Institute of Computational Mathematics and Mathematical Geophysics, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Lavrent’eva 6, Novosibirsk, 630000, Russia

Abstract

Abstract Hydrophysical studies and mathematical modeling of ring structures during ice cover on Lake Baikal have shown that their existence at the stage of ice cover degradation is due to anticyclonic currents. Such currents can be generated as a result of local upwelling, which we associate with the rise of methane hydrates from the top layer of bottom sediments and their dissociation. Analysis of satellite images shows that the radii of ice rings range from 1300 to 2400 m, which is close to the baroclinic Rossby radius. The measured ice thicknesses in the area of the rings are in agreement with model calculations. Deep water renewal in Lake Baikal can also be associated with the rise of hydrates.

Publisher

GeoScienceWorld

Subject

Geology,Geophysics

Link

https://pubs.geoscienceworld.org/rgg/article-pdf/59/11/1514/5268529/v59i11_s1068797118302360.pdf

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