Peter Nemere
A5052165180- Planetary Science and Exploration
- Advanced X-ray and CT Imaging
- X-ray Spectroscopy and Fluorescence Analysis
- Geochemistry and Geologic Mapping
- Geological and Geochemical Analysis
- Astro and Planetary Science
- Particle Detector Development and Performance
- Space Exploration and Technology
- Radioactivity and Radon Measurements
- Spaceflight effects on biology
- Space Science and Extraterrestrial Life
Queensland University of Technology
2020-2025
The geological units on the floor of Jezero crater, Mars, are part a wider regional stratigraphy olivine-rich rocks, which extends well beyond crater. We investigated petrology olivine and carbonate-bearing rocks Séítah formation in Jezero. Using multispectral images x-ray fluorescence data, acquired by Perseverance rover, we performed petrographic analysis Bastide Brac outcrops within this unit. found that these composed igneous rock, moderately altered aqueous fluid. mainly made...
Late-stage Ca-sulfate–filled fractures are common on Mars. Notably, the Shenandoah formation in western edge of Jezero crater preserves a variety Ca-sulfate minerals fine-grained siliciclastic rocks explored by Perseverance rover. However, depositional environment and timing these sulfates unknown. To address this outstanding problem, we developed technique to map crystal orientations situ at two stratigraphically similar locations formation, allowing us constrain burial depth...
While anomaly detection stands among the most important and valuable problems across many scientific domains, research often focuses on AI methods that can lack nuance interpretability so critical to conducting inquiry. In this application paper we present results of utilizing an alternative approach situates mathematical framing machine learning based within a participatory design framework. collaboration with NASA scientists working PIXL instrument studying Martian planetary geochemistry...
Late-stage Ca-sulfate-filled fractures are common on Mars. Notably, the Shenandoah formation in western edge of Jezero crater preserves a variety Ca-sulfate minerals fine-grained siliciclastic rocks explored by Perseverance rover. However, depositional environment and timing these sulfates is unknown. To address this outstanding problem, we developed new technique to map crystal textures situ at two stratigraphically similar locations formation, allowing us constrain burial depth...
The Planetary Instrument for X-ray Lithochemistry (PIXL) is a micro-focus fluorescence spectrometer mounted on the robotic arm of NASA's Perseverance rover. PIXL will acquire high spatial resolution observations rock and soil chemistry, rapidly analyzing elemental chemistry target surface. In 10 seconds, can use its powerful 120 micrometer diameter beam to analyze single, sand-sized grain with enough sensitivity detect major minor rock-forming elements, as well many trace elements. Over...