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Photometric Catalogue for Space and Ground Night-Time Remote-Sensing Calibration: RGB Synthetic Photometry from Gaia DR3 Spectrophotometry
Zamorano, Jaime; Masana, Eduard; Carrasco, Josep Manel +5 more
Recent works have made strong efforts to produce standardised photometry in RGB bands. For this purpose, we carefully defined the transmissivity curves of RGB bands and defined a set of standard sources using the photometric information present in Gaia EDR3. This work aims not only to significantly increase the number and accuracy of RGB standards…
Salt Constructs in Paleo-Lake Basins as High-Priority Astrobiology Targets
Cabrol, Nathalie A.; Phillips, Michael S.; McInenly, Michael +4 more
In extreme environments, microbial organisms reside in pockets with locally habitable conditions. Micro-climates conducive to the persistence of life in an otherwise inhospitable environment—"refugia"—are spatially restricted and can be micro- to centimeters in extent. If martian microbes are preserved in fossil refugia, this presents a double-edg…
Remote Sensing and Data Analyses on Planetary Topography
Lin, Shih-Yuan; Xiao, Haifeng; Kim, Jungrack
Planetary mapping product established by topographic remote sensing is one of the most significant achievements of contemporary technology. Modern planetary remote sensing technology now measures the topography of familiar solid planets/satellites such as Mars and the Moon with sub-meter precision, and its applications extend to the Kuiper Belt of…
Boundary Delineator for Martian Crater Instances with Geographic Information and Deep Learning
Liu, Danyang; Cheng, Weiming; Qian, Zhen +3 more
Detecting impact craters on the Martian surface is a critical component of studying Martian geomorphology and planetary evolution. Accurately determining impact crater boundaries, which are distinguishable geomorphic units, is important work in geological and geomorphological mapping. The Martian topography is more complex than that of the Moon, m…
Spectral Clustering of CRISM Datasets in Jezero Crater Using UMAP and k-Means
Thomas, Nicolas; Rossi, Angelo Pio; Fernandes, Michael +2 more
In this paper, we expand upon our previous research on unsupervised learning algorithms to map the spectral parameters of the Martian surface. Previously, we focused on the VIS-NIR range of hyperspectral data from the CRISM imaging spectrometer instrument onboard NASA's Mars Reconnaissance Orbiter to relate to other correspondent imager data sourc…
Resolving Ambiguities in SHARAD Data Analysis Using High-Resolution Digital Terrain Models
Kofman, Wlodek; Herique, Alain; Zine, Sonia +2 more
The SHAllow RADar (SHARAD) onboard Mars Reconnaissance Orbiter (MRO) is a 20 MHz Synthetic Aperture Radar (SAR) that probes the first hundreds of meters of the Martian subsurface. In order to interpret the detection of subsurface interfaces with ground penetrating radars, simulations using Digital Terrain Models (DTM) are necessary. This methodolo…
Unveiling the Subsurface of Late Amazonian Lava Flows at Echus Chasma, on Mars
Mansilla, Federico; Zorzano, María-Paz; Giannakis, Iraklis +1 more
The Echus-Kasei region on Mars has been exposed to different episodic volcanic, fluvial, and glacial events in Amazonian time. The goal of the present work is to demonstrate the usefulness of radar instruments to find preserved late Amazonian subsurface structures that may have been encapsulated underneath recent lava flows on Mars. We have analys…
Evidence of Widespread Volcanic Activity near Hebrus Valles on Mars Revealed by SHARAD
Hamilton, Christopher W.; Holt, John W.; Nerozzi, Stefano +1 more
Hebrus Valles is an outflow channel system in the plain-forming terrains of southeastern Utopia Planitia, Mars. These terrains may have formed through a combination of liquid water and volcanic processes, yet their nature, subsurface structure, and composition remain unclear. We investigate these terrains by mapping subsurface reflectors across 54…
Hybrid Volcanic Episodes within the Orientale Basin, Moon
Harish; Patel, Shreekumari Mukeshbhai; Patel, Deep +2 more
Basalts from Mare Orientale are representative of lunar flood volcanism, which sheds light on the lunar farside's thermal and volcanic past. We use Chandrayaan's Moon Mineralogy Mapper data to examine the spectral and chemical makeup of the volcanic units located in the Orientale basin; the analysis specifically focuses on three formations: Mare O…
Minimum Noise Fraction Analysis of TGO/NOMAD LNO Channel High-Resolution Nadir Spectra of Mars
Vandaele, Ann Carine; Daerden, Frank; Ristic, Bojan +10 more
NOMAD is a suite of spectrometers on the board of the ESA-Roscosmos Trace Gas Orbiter (TGO) spacecraft and is capable of investigating the Martian environment at very high spectral resolution in the ultraviolet-visible and infrared spectral ranges by means of three separate channels: UVIS (0.2-0.65 µm), LNO (2.2-3.8 µm), and SO (2.3-4.…