Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"earth's core"”.
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Potassium in the Earth's core.
… Institute of Technology. Dept. of Earth and Planetary Sciences.
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Magnetohydrodynamics of the Earth's core : 1) steady, rotating magnetoconvection 2) magnetic Rossby waves
… Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1992.
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Soliton-like waves of nuclear burning in the neutron multiplicating media : (theory and computational approach)
… slow burning process propagation in the reactor core is given. The simplified one-dimentional model of Pu accumulation and U burnup kinetics was proposed. Taking into account delayed neutrons three-dimensional model for one-group diffusion approximation is offered. The numerical solution for the …
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High Pressure Melting of Iron with Nonmetals Sulfur, Carbon, Oxygen, and Hydrogen: Implications for Planetary Cores
The earth's core consists of a solid metallic center surrounded by a liquid metallic outer layer. Understanding the compositions of the inner and outer cores allows us to better understand the dynamics of the earth's core, as well as the dynamics of the cores of other terrestrial planets and moons. …
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Rotating, hydromagnetic laboratory experiment modelling planetary cores
… of laboratory experiments motivated by planetary cores and the dynamo effect, the mechanism by which the flow of an electrically conductive fluid can give rise to a spontaneous magnetic field. Our experimental apparatus, meant to be a laboratory model of Earth's core, contains liquid sodium …
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Metal-silicate Partitioning Behavior of Molybdenum, Tungsten, and Nickel: Implications for Core Formation
The interior structure of Earth, particularly the metal core, is responsible for the core dynamo and thus our magnetic field and supplying the mantle with heat to encourage solid state convection and thus decompression melting and hot spot volcanism. Therefore determining how Earth's core formed …
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Late accretion to the early Earth and rocky exoplanets
The final stages of Earth's formation were characterised by the violent collisions of planetesimals, asteroids and comets -- by-products of the primary stage of planet formation -- with the nascent planet. It is thought these impacts, delivering vast sums of energy, may have transformed surface …
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Helical waves in Earth's outer core
… the generation and dispersion of wave packets in Earth's outer core. The waves of interest feed off the buoyancy field, and are supported by strong rotation and/or a large-scale magnetic field, two key features of the dynamics in Earth's core. We aim to better understand the role of wave packets …
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Convection and Magnetic Field Generation in Rotating Spherical Fluid Shells
… problem of the origin and properties of the Earth's magnetism. Extensive numerical simulations are performed in order to advance the understanding of the basic physical components and mechanisms believed to be responsible for the generation and the variations in time of the main geomagnetic …
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Density, magnetic properties and sound velocities of iron-rich materials at high temperature and high pressure
Understanding the composition of Earth’s inner core is crucial for revealing the mechanisms of core formation and the evolution of Earth. The presence of light elements in the Earth’s inner core has been indicated in recent studies, based on the mismatch between the observed density of the inner …
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Using high pressure to study thermal transport and phonon scattering mechanisms
… system relevant to geophysical modeling of the Earth's core-mantle boundary, so data on its thermal transport under pressure is valuable in itself."