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    Modeling Bright Gully Deposits' Formation in Hale Crater, Mars: Implications for Recent Liquid Water

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    Author
    Kolb, Kelly Jean
    Issue Date
    2008
    Keywords
    Mars
    gullies
    flow
    modeling
    debris flows
    Advisor
    McEwen, Alfred S.
    Committee Chair
    McEwen, Alfred S.
    
    Metadata
    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 or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
    Abstract
    This study aims at uncovering the formation mechanism of the recent bright gully deposits observed on Mars in order to assess the viability of liquid water involvement. I use a high resolution topography model as input into a kinematic model to assess whether or not a dry granular flow could form the bright gully deposits seen in Hale Crater. I investigate a dry mechanism due to the difficulty of producing water on the martian surface under present-day pressure and temperature conditions. I examine a range of particle sizes, flow thicknesses, and upslope initiation points to examine how these parameters affect the run-out distances of flows. The results show that multiple combinations of parameters could produce flows that travel to within the observed deposits' boundaries. The results suggest that the recent bright gully deposits are not evidence of recent liquid water on the surface of Mars.
    Type
    text
    Electronic Thesis
    Degree Name
    MS
    Degree Level
    masters
    Degree Program
    Planetary Sciences
    Graduate College
    Degree Grantor
    University of Arizona
    Collections
    Master's Theses

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