A5038141661- Planetary Science and Exploration
- Astro and Planetary Science
- Space Exploration and Technology
- Chemical Analysis and Environmental Impact
- Geochemistry and Elemental Analysis
- Hydrocarbon exploration and reservoir analysis
- Space Science and Extraterrestrial Life
- Groundwater and Isotope Geochemistry
- CO2 Sequestration and Geologic Interactions
- Geological Modeling and Analysis
- Sympathectomy and Hyperhidrosis Treatments
- Spaceflight effects on biology
- Mercury impact and mitigation studies
- Mineral Processing and Grinding
- Biocrusts and Microbial Ecology
- Aeolian processes and effects
- Geochemistry and Geologic Mapping
- Skin and Cellular Biology Research
- Geology and Paleoclimatology Research
Rice University
2022-2025
Washington University in St. Louis
2020-2022
The Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) on the Orbiter (MRO) collected hyperspectral images of Martian surface and atmosphere from September 27, 2006, through May 7, 2022. Over that time, nearly twenty scientific investigations were completed, most which arose as a result findings previous investigations. Two review papers published in 2009 (Murchie et al., 2009a, b) described initial two-year investigation during MRO's Primary Science Phase, its key findings, CRISM...
Chlorate is an important Cl-bearing species and a strong potential Fe(II) oxidant on Mars. Since the amount of oxychlorine (perchlorate chlorate) detected Mars limited (<~1 wt.%), effectiveness chlorate to produce iron oxides depends heavily its oxidizing capacity. Decomposition or intermediates produced during reduction, before reaction with would decrease effective capacity as oxidant. We thus evaluated Fe(III) minerals in Mars-relevant fluids, via oxidation dissolved Fe(II). Each ion...
The mean annual surface temperatures on present and early Mars likely remain well below 0 °C with episodic warming to as high 20 °C. Temperature exerts a strong control geochemical processes but fundamental phenomena like iron oxidation the formation of oxides have not been widely studied 25 Earlier studies demonstrated effectiveness chlorate in oxidizing dissolved Fe(II) form Fe(III)-bearing minerals commonly found Mars. Here, we determined rate ferrous by resulting mineral precipitates...
Abstract The Bagnold linear dune field investigated by Curiosity at Mount Desert Island (MDI) is north of the ∼5.5 km high Aeolis Mons mound in Gale crater. False‐color images (RGB: 2.496, 1.802, and 1.237 μm, respectively) generated from Mars Reconnaissance Orbiter Compact Imaging Spectrometer for (CRISM) data show has a reddish‐brown color. Sands Forvie (SoF), located ∼2.5 to southeast MDI, darker lacks Single scattering albedo (SSA) spectra retrieved 12 m/pixel using along‐track...
Geomorphic and stratigraphic studies of Mars prove extensive liquid water flowed pooled on the surface early in Mars' history. Martian paleoclimate models, however, have difficulty simulating climate conditions warm enough to maintain Mars. Reconciling geologic record paleoclimatic simulations is critical understanding history, atmospheric conditions, paleoclimate. This study uses an adapted lake energy balance model investigate connections between geology climate. The Lake Modeling for...
Earth and Space Science Open Archive This preprint has been submitted to is under consideration at Journal of Geophysical Research - Planets. ESSOAr a venue for early communication or feedback before peer review. Data may be preliminary.Learn more about preprints preprintOpen AccessYou are viewing the latest version by default [v1]Orbital In-Situ Investigation Bagnold Dunes Sands Forvie, Gale Crater, MarsAuthorsEleanor LouiseMorelandRaymond E.ArvidsonRichard V.MorrisThomasCondusMadison...