Analysis of a new geomorphological inventory of landslides in Valles Marineris, Mars

Brunetti, Maria Teresa; Guzzetti, Fausto; Cardinali, Mauro; Fiorucci, Federica; Santangelo, Michele; Mancinelli, Paolo; Komatsu, G.; Borselli, L.

doi:10.1016/j.epsl.2014.08.025

Cited by 68 publications

(60 citation statements)

References 56 publications

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“…This is indeed testified by the ubiquitous presence of fractures on all the cliffs from which landslides formed (thermal cracking has been suggested to be one of the triggers mechanisms of a cliff collapse; Pajola et al, ) meaning that the collapsed material of 67P is cohesive and well consolidated once detached. The calculated mean landslide apparent friction angle of 34° is considerably higher than the values (14°) reported for fractured rock mass in other context (Quantin et al, ; Brunetti et al, ) and more comparable to those of pristine rocks such as sandstones, siltstones, gneisses, and slates (from 27 to 34°), or basalts, granites, and limestones (from 34° to 40°; Wyllie & Mah, ). This comparison indicates that the cometary material is characterized by a high to medium internal friction coefficient.…”

Section: Resultscontrasting

confidence: 51%

“…Cometary landslides, first observed and analyzed in detail on 67P, have dimensions that range from tens to hundreds of meters and are small compared to the kilometer‐scale landslides observed on other solar system bodies (Brunetti et al, ; Legros, ; Quantin et al, ; Singer et al, ; Schmidt et al, ).…”

Section: Landslide Comparison On Comet 67p and Planetary Bodiesmentioning

confidence: 99%

“…67P landslides mobility compared to other planetary bodies. (a) The measurements obtained for both rocky bodies, such as terrestrial subaerial landslides (Legros, ), Martian landslides in Valles Marineris (pink triangles: Quantin et al, ; violet triangles: Brunetti et al, ), a data set of earlier Viking measurements (McEwen, ; red triangles), and icy bodies, such as debris aprons within craters on Jupiter's moon Callisto and Saturnian moons Rhea and Iapetus (Singer et al, ), three types of landslides identified on Ceres (Schmidt et al, ), compared to the 67P landslides identified in this study. (b) Dependence of landslide drop height on runout distance for comet 67P landslides compared to the Earth and Mars landslide dataset reported in (a).…”

Section: Landslide Comparison On Comet 67p and Planetary Bodiesmentioning

confidence: 99%

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The Rocky‐Like Behavior of Cometary Landslides on 67P/Churyumov‐Gerasimenko

Lucchetti

Penasa

Pajola

et al. 2019

Geophysical Research Letters

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Landslides have been identified on several solar system bodies, and different mechanisms have been proposed to explain their runout length. We analyze images from the Rosetta mission and report the global characterization of such features on comet 67P/Churyumov-Gerasimenko's surface. By assuming the height to runout length as an approximation for the friction coefficient of landslide material, we find that on comet 67P, this ratio falls between 0.50 and 0.97. Such unexpected high values reveal a rocky-type mechanical behavior that is much more akin to Earth dry landslides than to icy satellites' mass movements. This behavior indicates that 67P and likely comets in general are characterized by consolidated materials possibly rejecting the idea that they are fluffy aggregates. The variability of the runout length among 67P landslides can be attributed to the different volatile content located in the top few meters of the cometary crust, which can drive the mass movement.

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Section: Resultscontrasting

confidence: 51%

Section: Landslide Comparison On Comet 67p and Planetary Bodiesmentioning

confidence: 99%

Section: Landslide Comparison On Comet 67p and Planetary Bodiesmentioning

confidence: 99%

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The Rocky‐Like Behavior of Cometary Landslides on 67P/Churyumov‐Gerasimenko

Lucchetti

Penasa

Pajola

et al. 2019

Geophysical Research Letters

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“…More recently, comparative analysis of different landslides was made possible based on updated data and images with better resolution, also allowing some quantitative studies of slope stability (e.g., Schulz 2002;Harrison and Grimm 2003;Quantin et al 2004a, b;Soukhovitskaya and Manga 2006;Lajeunesse et al 2006;Bigot-Cormier and Montgomery 2007;Bulmer 2012;Brunetti et al 2014). Several landslides cluster in the Valles Marineris (also VM, hereafter), a system of valleys stretching W-E along the equator that had a complex history of extensional tectonics and collapse (e.g., Schultz 1998;Hauber et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Inferring the high velocity of landslides in Valles Marineris on Mars from morphological analysis

2016

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The flow characteristics and velocities of three landslides in Valles Marineris on Mars are investigated using detailed morphological analyses of high-resolution images and dynamical calculations based on the run-up and curvature of the landslide deposits. The morphologies of the landslides are described, especially concerning those characteristics that can provide information on the dynamics and velocity. The long runout and estimated high velocities, often exceeding 100 m/s, confirm a low basal friction experienced by these landslides. Because subaqueous landslides on Earth exhibit reduced friction, we explore the scenario of sub-lacustrine failures, but find little support to this hypothesis. The environmental conditions that better explain the low friction and the presence of longitudinal furrows suggest an aerial environment with a basal soft and naturally lubricating medium on which friction diminished gradually; in this perspective, ice is the most promising candidate.

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“…Remote-sensing data are even more important when dealing with extraterrestrial bodies, because in such a case they are the major -if not unique -data source. Recently, some typical criteria that have been normally applied to map landslides on Earth, were recently used to identify and draw landslide maps in Valles Marineris, Mars (Brunetti et al, 2014). Figure 1 shows an example of a landslide mapped in a lunar crater (Brunetti et al, 2015).…”

Section: Landslides In Impact Cratersmentioning

confidence: 99%

Mapping Landslides in Lunar Impact Craters Using Chebyshev Polynomials and Dem’s

Yordanov¹,

Scaioni²,

Brunetti³

et al. 2016

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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Commission VI, WG VI/1 KEY WORDS: Planetary mapping, Impact craters, Landslides, Chebyshev polynomials ABSTRACT:Geological slope failure processes have been observed on the Moon surface for decades, nevertheless a detailed and exhaustive lunar landslide inventory has not been produced yet. For a preliminary survey, WAC images and DEM maps from LROC at 100 m/pixels have been exploited in combination with the criteria applied by Brunetti et al. (2015) to detect the landslides. These criteria are based on the visual analysis of optical images to recognize mass wasting features. In the literature, Chebyshev polynomials have been applied to interpolate crater cross-sections in order to obtain a parametric characterization useful for classification into different morphological shapes. Here a new implementation of Chebyshev polynomial approximation is proposed, taking into account some statistical testing of the results obtained during Least-squares estimation. The presence of landslides in lunar craters is then investigated by analyzing the absolute values off odd coefficients of estimated Chebyshev polynomials. A case study on the Cassini A crater has demonstrated the key-points of the proposed methodology and outlined the required future development to carry out.

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Analysis of a new geomorphological inventory of landslides in Valles Marineris, Mars

Cited by 68 publications

References 56 publications

The Rocky‐Like Behavior of Cometary Landslides on 67P/Churyumov‐Gerasimenko

The Rocky‐Like Behavior of Cometary Landslides on 67P/Churyumov‐Gerasimenko

Inferring the high velocity of landslides in Valles Marineris on Mars from morphological analysis

Mapping Landslides in Lunar Impact Craters Using Chebyshev Polynomials and Dem’s

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