Studia Geophysica et Geodaetica

, Volume 30, Issue 1, pp 46–59 | Cite as

Thermally driven hydromagnetic instabilities in a non-constantly stratified layer

  • Ján Boďa
  • Gustáv Siráň
  • I. Cupal


The convection in a rapidly rotating electrically conducting, fluid horizontal layer of non-constant stratification, permeated by an inhomogeneous magnetic field, is studied. In this connection, a temperature model of the layer is constructed, which creates a structure such that part of the layer is unstably and a part stably stratified. The results obtained are applied to the conditions in the fluid Earth's core.


Magnetic Field Convection Stratification Structural Geology Temperature Model 
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Иссле¶rt;уеmся конвекцuя в бысmро врaщaющемся элекmроnрово¶rt;ящем жu¶rt;комгорuзонmaльном слое, коmорыŭ uмееm неnосmоянную сmрamuфuкaцuю u нaхо¶rt;umся в нео¶rt;норо¶rt;ном мaгнumном nоле. Вознuкaющaя nрu эmом mеnловaя мо¶rt;ель слоя nрuво¶rt;um к вознuкновенuю maкоŭ сmрукmуры, nрu коmороŭ чaсmь слоя сmрamuфuцuруеmся несmрaбuльно, a чaсmь — сmaбuльно. Полученные резульmamы uсnользуюmся ¶rt;ля aнaлuзa nроцессов, nроuсхо¶rt;ящuх в жu¶rt;ком я¶rt;ре Землu.


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  1. [1]
    D. E. Loper, P. H. Roberts: A Study of Conditions at the Inner Core Boundary of the Earth. Phys. Earth Planet. Inter., 24 (1981), 302.Google Scholar
  2. [2]
    D. R. Fearn, D. E. Loper: Compositional Convection and Stratification of Earth's Core. Nature, 289 (1981), 393.Google Scholar
  3. [3]
    D. R. Fearn: Thermal and Magnetic Instabilities in a Rapidly Fluid Sphere. Geoph. Astrophys. Dyn., 14 (1979), 103.Google Scholar
  4. [4]
    A. M. Soward: Thermal and Magnetically Driven Convection in a Rapidly Rotating Fluid Layer. J. Fluid Mech., 90 (1979), 669.Google Scholar

Copyright information

© ACADEMIA, Publishing House of the Czechoslovak Academy of Sciences 1986

Authors and Affiliations

  • Ján Boďa
    • 1
  • Gustáv Siráň
    • 1
  • I. Cupal
  1. 1.Faculty of Mathematics and PhysicsComenius UniversityBratislava

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