Jesse Tarnas
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View article: Global Distribution of Serpentine on Mars
Global Distribution of Serpentine on Mars Open
The distribution and origin of serpentine on Mars can provide insights into the planet's aqueous history, habitability, and past climate. In this study, we used dynamic aperture factor analysis/target transformation applied to 15,760 image…
View article: Global Distribution of Serpentine on Mars
Global Distribution of Serpentine on Mars Open
The distribution and origin of serpentine on Mars can provide insights into the planet's aqueous history, habitability, and past climate. In this study, we used dynamic aperture factor analysis/target transformation applied to 15,760 image…
View article: Reflectance of Jezero Crater Floor: 2. Mineralogical Interpretation
Reflectance of Jezero Crater Floor: 2. Mineralogical Interpretation Open
The Perseverance rover landed in the ancient lakebed of Jezero crater, Mars on February 2021. Here, we assess the mineralogy of the rocks, regolith, and dust measured during the first year of the mission on the crater floor, using the visi…
View article: Compositionally and density stratified igneous terrain in Jezero crater, Mars
Compositionally and density stratified igneous terrain in Jezero crater, Mars Open
Before Perseverance, Jezero crater’s floor was variably hypothesized to have a lacustrine, lava, volcanic airfall, or aeolian origin. SuperCam observations in the first 286 Mars days on Mars revealed a volcanic and intrusive terrain with c…
View article: Aqueously altered igneous rocks sampled on the floor of Jezero crater, Mars
Aqueously altered igneous rocks sampled on the floor of Jezero crater, Mars Open
The Perseverance rover landed in Jezero crater, Mars, to investigate ancient lake and river deposits. We report observations of the crater floor, below the crater’s sedimentary delta, finding that the floor consists of igneous rocks altere…
View article: An olivine cumulate outcrop on the floor of Jezero crater, Mars
An olivine cumulate outcrop on the floor of Jezero crater, Mars Open
The geological units on the floor of Jezero crater, Mars, are part of a wider regional stratigraphy of olivine-rich rocks, which extends well beyond the crater. We investigated the petrology of olivine and carbonate-bearing rocks of the Sé…
View article: Infrared Reflectance of Jezero geological units from Supercam/Mars2020 Observations 
Infrared Reflectance of Jezero geological units from Supercam/Mars2020 Observations  Open
<p>On February 18, 2021, NASA&#8217;s Mars 2020 <em>Perseverance</em> rover landed successfully in Jezero crater. Several geological and compositional units were previously identified from orbital data analysis : a da…
View article: The Circum-Isidis Capping Unit: An Extensive Regional Ashfall Deposit Exposed in Jezero Crater
The Circum-Isidis Capping Unit: An Extensive Regional Ashfall Deposit Exposed in Jezero Crater Open
Data repository for The Circum-Isidis Capping Unit: An Extensive Regional Ashfall Deposit Exposed in Jezero Crater, a manuscript accepted by Geophysical Research Letters in February 2022.
View article: A Delta-Lake System at Jezero Crater (Mars) from long distance observations
A Delta-Lake System at Jezero Crater (Mars) from long distance observations Open
International audience
View article: SIGNIFICANCE OF THE VARIATIONS IN FLUVIAL INPUT WITHIN JEZERO CRATER FROM PERSEVERANCE ROVER OBSERVATIONS
SIGNIFICANCE OF THE VARIATIONS IN FLUVIAL INPUT WITHIN JEZERO CRATER FROM PERSEVERANCE ROVER OBSERVATIONS Open
International audience
View article: Perseverance rover reveals an ancient delta-lake system and flood deposits at Jezero crater, Mars
Perseverance rover reveals an ancient delta-lake system and flood deposits at Jezero crater, Mars Open
Perseverance images of a delta on Mars The Perseverance rover landed in Jezero crater, Mars, in February 2021. Earlier orbital images showed that the crater contains an ancient river delta that was deposited by water flowing into a lake bi…
View article: Characteristics, Origins, and Biosignature Preservation Potential of Carbonate‐Bearing Rocks Within and Outside of Jezero Crater
Characteristics, Origins, and Biosignature Preservation Potential of Carbonate‐Bearing Rocks Within and Outside of Jezero Crater Open
Carbonate minerals have been detected in Jezero crater, an ancient lake basin that is the landing site of the Mars 2020 Perseverance rover, and within the regional olivine‐bearing (ROB) unit in the Nili Fossae region surrounding this crate…
View article: Replication data for: Characteristics, origins, and biosignature preservation potential of carbonate-bearing rocks within and outside of Jezero crater
Replication data for: Characteristics, origins, and biosignature preservation potential of carbonate-bearing rocks within and outside of Jezero crater Open
Replication data for: Characteristics, origins, and biosignature preservation potential of carbonate-bearing rocks within and outside of Jezero crater
View article: Crustal Groundwater Volumes Greater Than Previously Thought
Crustal Groundwater Volumes Greater Than Previously Thought Open
Global groundwater volumes in the upper 2 km of the Earth's continental crust—critical for water security—are well estimated. Beyond these depths, a vast body of largely saline and non‐potable groundwater exists down to at least 10 km—a vo…
View article: Comparison of Orbital and in situ NIR-spectra in Jezreo Crater: insight from the first Supercam Infrared Spectrometer data
Comparison of Orbital and in situ NIR-spectra in Jezreo Crater: insight from the first Supercam Infrared Spectrometer data Open
 Introduction: On February 18, 2021, NASA’s Mars 2020 Perseverance rover landed successfully in Jezero crater, a 50 km crater located on the margin of the Isidis basin on Mars. The Mars 2020 mission is the first step of a Mars s…
View article: Observing rocks in Jezero crater, Mars: results of the first months of operation of the SuperCam VISIR spectrometer
Observing rocks in Jezero crater, Mars: results of the first months of operation of the SuperCam VISIR spectrometer Open
The Perseverance rover (Mars 2020 mission, NASA) landed in the ancient lakebed of Jezero crater, Mars on February 18th, 2021. The main science objectives of the mission are the characterization of past habitable environments, the search fo…
View article: Stratigraphic Relationships in Jezero Crater, Mars: Constraints on the Timing of Fluvial‐Lacustrine Activity From Orbital Observations
Stratigraphic Relationships in Jezero Crater, Mars: Constraints on the Timing of Fluvial‐Lacustrine Activity From Orbital Observations Open
On February 18, 2021 NASA's Perseverance rover landed in Jezero crater, located at the northwestern edge of the Isidis basin on Mars. The uppermost surface of the present‐day crater floor is dominated by a distinct geologic assemblage prev…
View article: Earth-like Habitable Environments in the Subsurface of Mars
Earth-like Habitable Environments in the Subsurface of Mars Open
In Earth's deep continental subsurface, where groundwaters are often isolated for >106 to 109 years, energy released by radionuclides within rock produces oxidants and reductants that drive metabolisms of non-photosynthetic microorganisms.…
View article: Origin of carbonate-bearing rocks in Jezero crater: Implications for ancient habitability in subsurface environments
Origin of carbonate-bearing rocks in Jezero crater: Implications for ancient habitability in subsurface environments Open
Earth and Space Science Open Archive This preprint has been submitted to and is under consideration at Journal of Geophysical Research - Planets. ESSOAr is a venue for early communication or feedback before peer review. Data may be prelimi…
View article: The evolution of habitable environments on terrestrial planets: Insights and knowledge gaps from studying the geologic record of Mars
The evolution of habitable environments on terrestrial planets: Insights and knowledge gaps from studying the geologic record of Mars Open
This white paper is pre-
View article: Maximizing the Science and Resource Mapping Potential of Orbital VSWIR Spectral Measurements of Mars
Maximizing the Science and Resource Mapping Potential of Orbital VSWIR Spectral Measurements of Mars Open
International audience
View article: Deep Trek: Mission Concepts for Exploring Subsurface Habitability & Life on Mars — A Window into Subsurface Life in the Solar System
Deep Trek: Mission Concepts for Exploring Subsurface Habitability & Life on Mars — A Window into Subsurface Life in the Solar System Open
Charles D. Edwards (Jet Propulsion Laboratory, California Institute of Technology). Co-Authors: 1. Vlada Stamenkovic Jet Propulsion Laboratory, California Institute of Technology; 2. Penelope Boston NASA Ames; 3. Kennda Lynch LPI/USRA … et…
View article: Spectral libraries for "Successes and challenges of factor analysis/target transformation application to visible-to-near-infrared hyperspectral data"
Spectral libraries for "Successes and challenges of factor analysis/target transformation application to visible-to-near-infrared hyperspectral data" Open
These are the gypsum, carbonate, nontronite, montmorillonite, and kaolinite spectral libraries used in Tarnas et al. (2021) Successes and challenges of factor analysis/target transformation application to visible-to-near-infrared hyperspec…
View article: RELAB spectra of samples used in "Successes and challenges of factor analysis/target transformation application to visible-to-near-infrared hyperspectral data"
RELAB spectra of samples used in "Successes and challenges of factor analysis/target transformation application to visible-to-near-infrared hyperspectral data" Open
These are spectra, spectral plots, and sample images measured in the NASA Reflectance Experiment Laboratory (RELAB; http://www.planetary.brown.edu/relabdocs/relab.htm), of the mineral endmembers and mixtures used in Tarnas et al. (2021) Su…
View article: Hyperspectral images for "Successes and challenges of factor analysis/target transformation application to visible-to-near-infrared hyperspectral data
Hyperspectral images for "Successes and challenges of factor analysis/target transformation application to visible-to-near-infrared hyperspectral data Open
These are the VNIR hyperspectral images used in Tarnas et al. (2021) Successes and challenges of factor analysis/target transformation application to visible-to-near-infrared hyperspectral data, Icarus, https://doi.org/10.1016/j.icarus.202…
View article: Joint Hapke Model and Spatial Adaptive Sparse Representation with Iterative Background Purification for Martian Serpentine Detection
Joint Hapke Model and Spatial Adaptive Sparse Representation with Iterative Background Purification for Martian Serpentine Detection Open
Visible and infrared imaging spectroscopy have greatly revolutionized our understanding of the diversity of minerals on Mars. Characterizing the mineral distribution on Mars is essential for understanding its geologic evolution and past ha…
View article: Mars' Subsurface Environment: Where to Search for Groundwater?
Mars' Subsurface Environment: Where to Search for Groundwater? Open
While liquid water is not thermodynamically stable at the surface due to the low temperature and pressure conditions, liquid groundwater may still exist in the Martian subsurface [1, 2].In this study, we use fully dynamical 3D thermal evol…