New Horizons at Pluto has given the planetary science community the first images of Pluto’s surface, including geologic wonders and compositional variability. Methane, nitrogen, and carbon monoxide make up the bulk of the volatile plutonian surface along with water ice. In this work, these three main volatiles are specifically investigated in the laboratory setting to understand the spectral properties and behavior of binary and ternary mixtures. The spectra are taken in the near-infrared wavelengths (1 – 2.5 µm) using Fourier transform infrared (FTIR) spectroscopy techniques utilizing the Pluto Simulation Chamber housed at the University of Arkansas, which can reach conditions relevant to Pluto (10 – 50 K; 14- 25 µbar). Here updated investigations of the methane-nitrogen and nitrogen-carbon monoxide binary systems are developed, along with the creation of an entirely new methane-carbon monoxide binary phase diagram. The second part of this dissertation is the study of certain geophysical processes. This includes compressional folds at the Baret Montes glacier, collapsing from putative cryovolcanism at Hekla Cavus, and fault construction in the southwestern close-encounter hemisphere of Pluto. Both the experimental spectroscopy and theoretical geology expand the knowledge of Pluto and other icy bodies of the outer solar system and could perhaps expand our knowledge of the interactions of different combinations of ices at low temperatures to understand surface evolution or surface-atmosphere relations.
|Advisor:||Chevrier, Vincent F.|
|Commitee:||Roe, Larry, Wang, Feng, Lehmer, Bret|
|School:||University of Arkansas|
|Department:||Space & Planetary Sciences|
|School Location:||United States -- Arkansas|
|Source:||DAI-B 81/11(E), Dissertation Abstracts International|
|Subjects:||Astronomy, Physical chemistry, Geophysics|
|Keywords:||Cryogeology, Near-infrared spectroscopy, Planetary science, Pluto, Solar system|
Copyright in each Dissertation and Thesis is retained by the author. All Rights Reserved
The supplemental file or files you are about to download were provided to ProQuest by the author as part of a
dissertation or thesis. The supplemental files are provided "AS IS" without warranty. ProQuest is not responsible for the
content, format or impact on the supplemental file(s) on our system. in some cases, the file type may be unknown or
may be a .exe file. We recommend caution as you open such files.
Copyright of the original materials contained in the supplemental file is retained by the author and your access to the
supplemental files is subject to the ProQuest Terms and Conditions of use.
Depending on the size of the file(s) you are downloading, the system may take some time to download them. Please be