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    Radar Analysis and Theoretical Modeling of the Presence and Preservation of Ice on Mars

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    Author
    Bramson, Ali M.
    Issue Date
    2018
    Keywords
    cratering
    ice
    Mars
    planets
    radar
    remote sensing
    Advisor
    Byrne, Shane
    
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    Show full item record
    Publisher
    The University of Arizona.
    Rights
    Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction, presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
    Abstract
    The distribution and nature of water ice on Mars has important implications for understanding the Martian climate system, as well as evaluating the resources available for future human explorers and the astrobiological potential of our solar system. This dissertation presents a multi-faceted study of ice on Mars, combining spacecraft remote sensing datasets from imaging and radar systems with theoretical models of ice stability. In Chapter 1, I summarize the state of knowledge of ice on Mars and its relation to the planet’s climate. In Chapter 2, I present the discovery of an ice sheet in the mid-latitude region of Arcadia Planitia and constrain its properties using remote sensing observations from the Mars Reconnaissance Orbiter. In Chapter 3, I model the thermal stability and retreat from ice sheets in the mid-latitudes to understand their evolution and continued preservation to the present day. Ice in the mid-latitudes exchanges with polar ice over geologic time so to understand the other half of the Martian system, I investigate the stability of polar deposits of ice. In Chapter 4, I quantify the role of ice sublimation in the migration of troughs in the polar caps. Chapter 5 presents the conclusions of this dissertation work and puts the results in the context of outstanding questions in Mars’ climate and ice-cycle evolution.
    Type
    text
    Electronic Dissertation
    Degree Name
    Ph.D.
    Degree Level
    doctoral
    Degree Program
    Graduate College
    Planetary Sciences
    Degree Grantor
    University of Arizona
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