Search Publications
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…
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…
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…
A global colour mosaic of Mars from Mars Express HRSC high altitude observations
Jaumann, R.; Postberg, F.; Matz, K. -D. +8 more
The ever-changing transparency of the Martian atmosphere hinders the determination of absolute surface colour from spacecraft images. While individual high-resolution images from low orbit reveal numerous colour details of the geology, the colour variation between images caused by scattering off atmospheric dust can easily be of greater magnitude.…
A conceptual model for the formation of ramparts on Martian impact crater ejecta
Boyce, Joseph M.; Mouginis-Mark, Peter J.
Mars Orbiter Laser Altimeter (MOLA) elevation measurements for 23 different impact craters and 12 different long runout landslides show rampart ridges on Martian fluidized ejecta flows are higher relief than those on Martian landslides. We propose a conceptual model to explain this height difference that is based on the effects of the impact and e…
A modeling approach for water and sediment transport in Jezero crater on Mars based on new geomorphological evidence
Postberg, Frank; Jaumann, Ralf; Gross, Christoph +3 more
In our study we examined water-related processes and events in the Jezero crater on Mars using flow discharge and sediment transport models of: 1) the western inlet valley carving, 2) the northern inlet valley carving, 3) crater flooding by only northern inlet and 4) by both northern and western inlets, 5) erosion of the western rim by the western…
Magnetosonic waves in the Martian ionosphere driven by upstream proton cyclotron waves: Two-point observations by MAVEN and Mars Express
Halekas, J. S.; Fowler, C. M.; Collinson, G. +5 more
Recent observations from the Mars Atmosphere and Volatile EvolutioN (MAVEN) and Mars Express (MEX) spacecraft have suggested that pressure pulses originating from upstream proton cyclotron waves (PCWs) can "ring" the Martian magnetopause at the same frequency and drive magnetosonic waves in the upper ionosphere of Mars, thereby transporting energy…