RNDr. Alexandra Marsenić, PhD.

Research interests:

  • geophysical fluid dynamics
  • magnetohydrodynamics of the Earth’s core

The Earth’s outer core is a complex magnetohydrodynamic system. It consists of an electrically conducting incompressible stratified spherical fluid layer between the mantle and the inner core. The fluid rotates with uniform angular velocity and is permeated by a magnetic field. The dynamics of the system is manifested by long-term changes in the geomagnetic field on the Earth’s surface – the co called secular variations. The research concerns elementary hydromagnetic processes that may be responsible for observed changes of the geomagnetic filed.

Selected publications:

Marsenić, A., “A kinematic model of vertical geomagnetic field variation resulting from a steady convective flow”, Geophysical and Astrophysical Fluid Dynamics, Vol 108, Issue 2, p. 191 – 212, 2014

Marsenić, A. and Ševčík, S., “Stability of sheared magnetic fields.“ Proceedings of Conference of Slovak and  Czech physisists, Žilina 2011, 21-26, 2012

Marsenić, A. and Ševčík, S., “Magnetic instability in a rotating layer at highly eccentric positions of the critical  level.” Astronomische Nachrichten, 332, 475-488, 2011

Marsenić, A. and Ševčík, S., “Stability of sheared magnetic field in dependence on its critical level position.”  Physics of the Earth and Planetary Interiors, 179, 32-44, 2010

Marsenić, A. and Ševčík, S., “Influence of a position of the critical level inside a plane layer on the rise of  magnetically and thermally driven instabilities.” Geophys. Astrophys. Fluid Dynamics, 102, 457-476, 2008