Browsing by Subject "EARTH'S CORE"

Browsing by Subject "EARTH'S CORE"

Sort by: Order: Results:

  • A COMPARISON OF SUBGRID-SCALE MODELS FOR LARGE-EDDY SIMULATIONS OF CONVECTION IN THE EARTH'S CORE 
    Buffett B.A. (2003)
    Large-eddy simulations provide a strategy for modelling large-scale flow when the smallest scales are not resolved. The approach relies on spatial filtering to eliminate scales smaller than the grid spacing, but requires ...
  • CORE-MANTLE RELATIVE MOTION AND COUPLING 
    Vanyo J.P. (2004)
    Core motion induced by lunisolar precession of the mantle is analysed and compared with experiments and Earth observations. First-order motion has the core axis lagging the mantle axis in precession by a small angle. This ...
  • ENERGETICS OF NUMERICAL GEODYNAMO MODELS 
    Buffett B.A.; Bloxham J. (2002)
    Global energy balances provide a useful framework for assessing the operation of numerical geodynamo models. We apply a spectral decomposition to the magnetic and kinetic energy equations to assess how the magnetic field ...
  • EXPERIMENTAL EVIDENCE OF NON-LINEAR RESONANCE EFFECTS BETWEEN RETROGRADE PRECESSION AND THE TILT-OVER MODE WITHIN A SPHEROID 
    Noir J.; Cardin P.; Jault D.; Masson J.P. (2003)
    The Poincare flow (also known as the tilt-over mode) in a precessing cavity filled with water is investigated experimentally. Assuming that the flow is mainly a solid-body rotation, we have used three independent techniques ...
  • GROSS THERMODYNAMICS OF TWO-COMPONENT CORE CONVECTION 
    Gubbins D.; Alfe D.; Masters G.; Price G.D.; Gillan M. (2004)
    We model the inner core by an alloy of iron and 8 per cent sulphur or silicon and the outer core by the same mix with an additional 8 per cent oxygen. This composition matches the densities of seismic model, Preliminary ...
  • Плотностные неоднородности мантии и ядра Земли 
    Чуйкова Надежда Алексеевна; Максимова Татьяна Геннадьевна (Федеральное государственное бюджетное образовательное учреждение высшего образования «Московский государственный университет им. М. В. Ломоносова», 2010)
    Определены латеральные вариации плотности на глубинах, характеризуемых аномалиями скоростей сейсмических волн, согласующиеся как с аномалиями внешнего гравитационного поля, так и с данными анализа собственных колебаний ...