Search Publications
The extent of formation of organic molecules in the comae of comets showing relatively high activity
Acharyya, Kinsuk; Ahmed, Sana
Comets are a rich reservoir of complex organic molecules. Ground and space-based observatories have recently greatly enhanced the cometary molecular inventory. Although these molecules' origin is believed to be the cometary nucleus, they can be partially synthesized in the coma. We studied organic molecules' nucleus versus coma origins for various…
Mars ionosphere TEC estimation from MARSIS data: A new approach
Sánchez-Cano, B.; Orosei, R.; Cartacci, M. +3 more
We describe a new implementation of the Contrast Method (CM) algorithm (Picardi and Sorge, 2000; Ilyushin Ya and Kunitsyn, 2004; Cartacci et al., 2013) used to correct the phase distortion of the echoes recorded by the Mars Advanced Radar for Subsurface and Ionosphere Sounding (MARSIS) (Picardi et al., 2005; Jordan et al., 2009) in its subsurface …
The effects of measured slope on Martian lava flow modeling
Russo, Frances P.; Flynn, Ian T. W.; Peters, Sean I. +1 more
One of the most frequently used methods for modeling lava flows on Mars is commonly called the "standard rheologic approach" (SRA). This method requires measurements of the flow dimensions (e.g., width, length, thickness) and local topography (e.g., slope), which are used in equations of viscosity and yield strength, for example. Topography is a c…
On the impact of the vertical structure of Martian water ice clouds on nadir atmospheric retrievals from simultaneous EMM/EXI and TGO/ACS-MIR observations.
Trokhimovskiy, Alexander; Korablev, Oleg; Fedorova, Anna +3 more
Retrieving the optical depth of the Martian clouds (
Relationships between lobate debris aprons and lineated valley fill on Mars: Evidence for an extensive Amazonian valley glacial landsystem in Mamers Valles
Head, James W.; Hiesinger, Harald; Jawin, Erica R. +3 more
We examine the characteristics and relationships of Lineated Valley Fill (LVF) and Lobate Debris Aprons (LDA) in Mamers Valles on Mars, a ∼950 km-long fretted valley at the dichotomy boundary. The relationships and distinctions between these glacial landforms are established by detailed analysis of LDA/LVF morphology, topography, and related featu…
Evidence for landslides in Sisyphi Cavi (Noachis Terra, Mars): Slope evolution and role of endogenous preparatory factors
Komatsu, Goro; Discenza, Marco Emanuele; Esposito, Carlo +4 more
The surface of Mars is characterized by the presence of numerous gravity-induced processes and mass movements with greatly variable sizes and peculiarities. Detailed geomorphological studies have recently made it possible to identify many landslide-like landforms along the slopes bordering pits of Sisyphi Cavi in Noachis Terra, the southern hemisp…
3D morphometry of Martian craters from HRSC DEMs using a multi-scale semantic segmentation network and morphological analysis
Tong, Xiaohua; Xu, Yusheng; Ye, Zhen +3 more
The morphology of impact craters reveals the structure and composition of the Martian surface, especially the subsurface conditions and Martian geological history, which have increasing importance in Mars exploration missions. This work presents a 3D morphometric method for detecting and delineating Martian craters, and a 3D morphological analysis…
Night O2 (a1Δg) airglow spatial distribution and temporal behavior on Venus based on SPICAV IR/VEx nadir dataset
Montmessin, F.; Fedorova, A.; Korablev, O. +6 more
The infrared O2 (a1Δg) airglow driven by the subsolar to antisolar circulation occurs between two global circulation regimes on Venus: the zonal super-rotation below 90 km and the subsolar to antisolar circulation over 120 km. Here we report the complete global results of SPICAV IR/Venus Express observations of O
Morphometry and kinematics correlation of wrinkle ridges on Mars: Insights from Trishear modelling
Carboni, F.; Karagoz, O.; Kenkmann, T.
Wrinkle ridges are among the most common and controversial compressional tectonic structures on terrestrial planets. While their origins are well inferred to be related to crustal shortening driven by compressional stress, their subsurface characterization is still a matter of debate. Open questions remain about the geometry, number, structural st…
Inversion of ultraviolet occultation profiles in a dusty atmosphere: Analytic and numerical methods
Gérard, J. -C.; Hubert, B.; Soret, L. +4 more
Over the last two decades, important efforts have been undertaken by the most prominent space agencies to explore and analyze the interior, ground and atmosphere of Mars. A series of remote sensing instruments have been deployed and operated to characterize the atmospheric composition and dynamics. Several techniques have been used including solar…