Samantha Jacob

ORCID: 0000-0001-9950-1486
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About
Contact & Profiles
Research Areas
  • Planetary Science and Exploration
  • Astro and Planetary Science
  • Space Exploration and Technology
  • Space Science and Extraterrestrial Life
  • Geology and Paleoclimatology Research
  • Spaceflight effects on biology
  • Anomaly Detection Techniques and Applications
  • Geochemistry and Geologic Mapping
  • Geological and Geochemical Analysis
  • Space exploration and regulation
  • Marine and environmental studies
  • Data-Driven Disease Surveillance
  • Isotope Analysis in Ecology
  • Remote-Sensing Image Classification
  • High-pressure geophysics and materials
  • Maritime and Coastal Archaeology
  • Mineralogy and Gemology Studies
  • 3D Surveying and Cultural Heritage
  • earthquake and tectonic studies
  • Scientific Research and Philosophical Inquiry
  • Pleistocene-Era Hominins and Archaeology
  • Historical Astronomy and Related Studies
  • Coastal and Marine Dynamics
  • Astronomical Observations and Instrumentation
  • Competitive and Knowledge Intelligence

Arizona State University
2019-2024

University of Arizona
2019

University of Hawaii System
2015-2016

University of Hawaiʻi at Mānoa
2014-2016

Abstract This paper provides an overview of the Curiosity rover's exploration at Vera Rubin ridge (VRR) and summarizes science results. VRR is a distinct geomorphic feature on lower Aeolis Mons (informally known as Mount Sharp) that was identified in orbital data based its texture, topographic expression, association with hematite spectral signature. conducted extensive remote sensing observations, acquired dozens contact targets, drilled three outcrop samples from ridge, well one sample...

10.1029/2020je006527 article EN cc-by Journal of Geophysical Research Planets 2020-07-27

Perseverance's Mastcam-Z instrument provides high-resolution stereo and multispectral images with a unique combination of spatial resolution, coverage, wavelength coverage along the rover's traverse in Jezero crater, Mars. Images reveal rocks consistent an igneous (including volcanic and/or volcaniclastic) impactite origin limited aqueous alteration, including polygonally fractured weathered coatings; massive boulder-forming bedrock consisting mafic silicates, ferric oxides, iron-bearing...

10.1126/sciadv.abo4856 article EN cc-by-nc Science Advances 2022-11-23

Abstract Mars' atmosphere typically supports dust aerosol with an effective radius near 1.5 μm, varying from ~1 μm during low times northern summer solstice to ~2 higher in southern spring and summer. After global events, size variations outside this range have not previously been observed. We report on imaging spectral observations by the Curiosity rover through 2018 event. These show that was seasonally normal prior local onset of increased opacity, rapidly above 4 increasing remained 3...

10.1029/2019gl084407 article EN Geophysical Research Letters 2019-08-22

Abstract Images from the Mars Science Laboratory (MSL) mission of lacustrine sedimentary rocks Vera Rubin ridge on “Mt. Sharp” in Gale crater, Mars, have shown stark color variations red to purple gray. These differences crosscut stratigraphy and are likely due diagenetic alteration sediments after deposition. However, chemistry timing these fluid interactions is unclear. Determining how processes may modified chemical mineralogical signatures ancient Martian environments critical for...

10.1029/2019je006322 article EN cc-by-nc Journal of Geophysical Research Planets 2020-09-23

Visible/short-wave infrared spectral data from the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) show absorptions attributed to hematite at Vera Rubin ridge (VRR), a topographic feature on northwest Mt. Sharp. The goals of this study are determine why caused by ferric iron strongly visible orbit VRR and improve interpretation CRISM throughout lower These achieved analyzing coordinated in situ along Curiosity rover's traverse. bedrock within areas that have deepest also has...

10.1029/2019je006294 article EN cc-by Journal of Geophysical Research Planets 2020-08-04

Abstract Science teams for rover-based planetary exploration missions like the Mars Laboratory Curiosity rover have limited time analyzing new data before making decisions about follow-up observations. There is a need systems that can rapidly and intelligently extract information from instrument datasets focus attention on most promising or novel Several novelty detection methods been explored in prior work three-channel color images non-image datasets, but few considered multispectral...

10.1007/s10618-020-00697-6 article EN cc-by Data Mining and Knowledge Discovery 2020-06-16

Abstract Glen Torridon (GT) is a recessive‐trough feature on the northwestern slope of “Mt. Sharp” in Gale crater, Mars with highest Fe‐/Mg‐phyllosilicates abundances detected by Curiosity rover to date. Understanding origin these clay minerals and their relationship diagenetic processes critical for reconstructing nature habitability past surface subsurface environments crater. We aim constrain distribution extent diagenesis using compositional morphological trends observed visible‐to‐near...

10.1029/2021je007098 article EN Journal of Geophysical Research Planets 2022-08-12

Abstract The Mars Science Laboratory Curiosity rover has explored over 400 m of vertical stratigraphy within Gale crater to date. These fluvio‐deltaic, lacustrine, and aeolian strata have been well‐documented by Curiosity's in situ remote science instruments, including the Mast Camera (Mastcam) pair multispectral imagers. Mastcam visible near‐infrared spectra can broadly distinguish between iron phases oxidation states, combination with chemical data from other help constrain mineralogy,...

10.1029/2021je007134 article EN cc-by Journal of Geophysical Research Planets 2022-08-01

Abstract The Curiosity rover on the Mars Science Laboratory mission has found extensive evidence that Gale crater once hosted a habitable lacustrine environment; however, there are remaining questions about chemistry and duration of lake nature climate at time. In this study, we use Mastcam multispectral data to investigate mineralogy Sutton Island member Murray formation, part basal layers Mt. Sharp, which consists heterolithic mudstone sandstone distinct from finely laminated mudstones...

10.1029/2022je007357 article EN cc-by-nc Journal of Geophysical Research Planets 2022-09-27

Abstract Since leaving Vera Rubin ridge (VRr), the Mars Science Laboratory Curiosity rover has traversed though phyllosilicate‐bearing region, Glen Torridon, and overlying Mg‐sulfate‐bearing strata, with excursions onto Greenheugh Pediment Amapari Marker Band. Each of these distinct geologic units were investigated using 's Mast Camera (Mastcam) multispectral instrument which is sensitive to iron‐bearing phases some hydrated minerals. We used Mastcam spectra, in combination chemical data...

10.1029/2023je008033 article EN cc-by Journal of Geophysical Research Planets 2024-02-01

Images from the Mars Science Laboratory (MSL) mission of lacustrine sedimentary rocks Vera Rubin ridge on “Mt. Sharp” in Gale crater, Mars, have shown stark color variations red to purple gray. These differences cross-cut stratigraphy and are likely due diagenetic alteration sediments after deposition. However, chemistry timing these fluid interactions is unclear. Determining how processes may modified chemical mineralogical signatures ancient martian environments critical for understanding...

10.1002/essoar.10501380.1 preprint EN 2019-12-12
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