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 14 of 14 for “"Planetology"”.
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A Study of Buried Organics on Mars - A Computational And Experimental Approach
This thesis consists of two related projects investigating exogenous organic burial on the surface of Mars and potential detection methods. Mars receives a significant quantity of organic material through exogenous sources such as micrometeorites. This work investigates the preservation of such …
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An Approach to Modelling Ice Deposition Across the Solar System
This dissertation presents an approach to examining the exotic ices behaviour, and reconstructing non-terrestrial the glacial history (under planetary conditions other than those of Earth), including those of stratified CO2 icesheets near Mars’ south pole, through high-resolution computer …
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The geophysical evolution of impact basins and volcanic structures on Mercury and the Moon
<p>The geologic histories of most terrestrial bodies are dominated by two major processes: meteorite bombardment and volcanism. The forms that the resulting impact craters and volcanic structures take can tell us a great deal about the ways in which these processes occur and about the environment …
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Adapting a Cryogen-Free Measurement System for Geological Materials: Method Development for Thermal Conductivity Measurements Below 300 K with Applications to Planetary Science
The thermal properties of airless planetary bodies like asteroids are essential to understanding their thermal evolution. While remote sensing missions collect thermal data, this is limited to surface properties. As such, little is known about internal heat flow. Thermal models are used to predict …
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A Study of Dynamical and Emission Variabilities in Pulsars
Pulsars are rapidly rotating highly magnetized neutron stars thought to have been formed in the core-collapse supernova of massive stars. Ever since their discovery, pulsars have shown complex behaviors. This is certainly true for their emission mechanism, which is still not fully understood. This …
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The Water Cycle at the Phoenix Landing Site, Mars
The water cycle is critically important to understanding Mars system science, especially interactions between water and surface minerals or possible biological systems. In this thesis, the water cycle is examined at the Mars Phoenix landing site: 68.2N, 125.70W), using data from the Compact …
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The Formation and Evolution of Habitable Worlds
The next generation of ground- and space-based telescopes will probe the atmospheres, and possibly the surfaces, of Earth-sized planets in the habitable zone (HZ). However, observing time will be both expensive and limited making it essential to target only the most promising planet candidates in …
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Trace Element Geochemistry of Compositionally Layered Impact Spherules
Impact spherules are sand-sized spherical particles that have been interpreted to have formed by the cooling, crystallization, and quenching of melt droplets condensed from vapor plumes that are created during large meteor impacts. Spherules may be deposited globally as unique marker beds, such as …
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Normal Fault Trace-Length Scaling in a Tectonic Transition Zone in Southern Sedna Planitia, Venus
In this study, fault trace-lengths of normal faults are measured in southern Sedna Planitia, Venus between 27° to 32° latitude and 336° to 343° longitude where smooth, lowland plains transition into highland regions which are broken by basin and range style tectonics. The fault trace-lengths are …
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Modeling target rock composition of two impact events
Although incomplete, the Archean rock record provides a rare opportunity to investigate early Earth's crustal evolution. Spherule layers, formed through condensation of vaporized target rock and bolide material during meteorite impacts, represent a unique window into this time. This study models …