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 11 of 11 for “"planetary evolution"”.
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Employing Magnetic Field Records at Key Moments in Planetary Evolution
… and powerful viewpoint on early solar system and planetary evolution. Indeed, meteorites are the only tangible objects that bore witness to these important events, making their records particularly precious. In this thesis, I present my dissertation work that addresses how the meteoritic …
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Direct numerical simulations of multiphase flow with applications to basaltic volcanism and planetary evolution
Multiphase flows are an essential component of natural systems: They affect the explosivity of volcanic eruptions, shape the landscape of terrestrial planets, and govern subsurface flow in hydrocarbon reservoirs. Advancing our fundamental understanding and predictive capabilities of multiphase …
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Geophysical evolution of planetary interiors and surfaces : Moon & Mars
The interiors and surfaces of the terrestrial planetary bodies provide us a unique opportunity to gain insight into planetary evolution, particularly in the early stages subsequent to accretion. Both Mars and the Moon are characterized by well-preserved and ancient surfaces, that preserve a record …
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Modeling the Thermal and Chemical Evolution of the Martian Lithosphere Over Time
Mars is an ideal planet to study planetary evolution and development, as its crust has been preserved over its history, rather than continuously recycled through subduction, as has happened on Earth. In order to attain a more coherent understanding of martian evolution, we focused on the thermal …
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Atmospheric Mass Loss And Orbital Evolution Of Exoplanets
… ultraviolet flux, can influence the observed planetary distribution. Coupling these effects can lead to a greater understanding of how the observed distribution was shaped and may help to explain the gaps in the distribution of mass and semi-major axes for these close-in planets. </p> <p>To …
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Mantle thermal evolution of tidally-locked super-earths
… planet's mantle convection structure and evolution using an axisymmetric finite element fluid convection code, SSAXC. Three punctuating evolutionary steps have been identified. First, a sequence of three initial downwellings form at the antistellar point, the substellar point, and at the …
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The volatile contents of melt inclusions and implications for mantle degassing and ocean island evolution
… volatile fluxes, which contribute to planetary evolution. While melt volatile contents are important, estimating the origin and fate of volatiles distributed within magmas is challenging because volatiles exsolve from the melt during eruption and are transferred into the atmosphere. …
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Investigating the Kinematics and Dynamics of Strain Localization in the Northern Western Branch of the East African Rift System
… the finite element software Advanced Solver for Planetary Evolution, Convection, and Tectonics (ASPECT); and 2) calculating the present-day Victoria microplate motion, strain rates, and geodetic fault slip rates to assess deformation zones using Global Navigation Satellite System (GNSS) data from …
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Geodetic and Geodynamic Constraints on Vertical Land Motions in the Chesapeake Bay
… topography using ASPECT (Advanced Solver for Planetary Evolution, Convection, and Tectonics) and vertical land motions due to glacial isostatic adjustment using SELEN (SealEveL EquatioN solver). By isolating the long-term processes contributing to subsidence throughout the Chesapeake Bay, the …
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Inside-out diversity of rocky planets
… building blocks of planets. Consequences of a planetary mass variability and compositional variability comprise the contents of this thesis. Because the surfaces of exoplanets are not directly detectable with present technology—their nature cannot be told by astronomy alone—questions about …
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Remote sensing of ion-neutral charge exchange and diffusive transport in planetary atmospheres
Planetary atmospheres are the envelope of gases that encircle a planet. This region is constantly interacting with energy and particles from the Sun and exhibits variability in its composition, structure, and evolution over periods ranging from hours to years. Through the loss of water to space, …