Pre-landslide topographic reconstruction in Baetis Chaos, mars using a CaSSIS Digital Elevation Model

Guimpier, Anthony; Conway, Susan J.; Pajola, M.; Lucchetti, Alice; Simioni, Emanuele; Re, Cristina; Noblet, Axel; Mangold, N.; Thomas, N.; Cremonese, Gabriele

doi:10.1016/j.pss.2022.105505

Cited by 3 publications

(4 citation statements)

References 33 publications

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“…They showed that a CTX‐based DEM provides a significant increase in accuracy in Martian topographic analysis relative to MOLA and High Resolution Stereo Camera (HRSC) DEMs. However, the most detailed topographic information can be obtained from the HiRISE DEMs (ground sampling distances and vertical resolution of <1 m; Brož et al., 2015; Guimpier et al., 2022), but the Mars surface coverage of these data is low. The HiRISE imagery has currently covered ∼0.5% of the surface of Mars with unique stereo‐pair coverage.…”

Section: Discussionmentioning

confidence: 99%

“…To date, the only known rampart geometries on Mars have been provided by Wilson et al (2009), who determined the mean thickness of the vent-proximal deposits using MOLA-based topographical profiles. Although the vertical resolutions of both MOLA and CTX-based DEMs are comparable (1-2 m; Guimpier et al, 2022;Mouginis-Mark et al, 2018), the Mars Orbiter Laser Altimeter (MOLA) spatial sampling is almost ∼30 times coarser. Therefore, the results obtained by Wilson et al (2009) are less precise than what can now be achieved with CTX data.…”

Section: Journal Of Geophysical Research: Planetsmentioning

confidence: 99%

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The Morphology of Martian Pyroclastic Ramparts and Their Use in Determining Vent‐Proximal Eruption Dynamics

Pieterek,

Jones,

Wilson

2024

JGR Planets

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High‐resolution investigations of Late Amazonian volcanic landforms provide previously unrevealed insights into the dynamics of Martian volcanic eruptions. On Earth, the formation of vent‐proximal accumulations of spatter deposits is attributed to low‐intensity lava fountaining episodes representing eruptions on the very edge of explosive activity. Martian spatter deposits form small‐scale volcanic landforms that are rarely reported, and thus the dynamics of Martian mafic explosive eruptions are still not fully constrained. We conducted high‐resolution Context Camera‐based mapping coupled with a stereo‐pair‐generated digital elevation model to reconstruct the eruptive history of a fissure system and its associated products south of Ascraeus Mons, Mars. The studied volcanic fissure clearly demonstrates both explosive and effusive deposits and, in addition, is spatially associated with a lava channel. For the first time, these observations allowed us to conduct a comparative analysis of vent‐proximal volcanic products and reconstruct the late‐stage eruption dynamics of a fissure system. We found that the spatial distribution of the pyroclastic (spatter) rampart along the fissure vent is heterogeneous and generated using dynamic eruption processes. Moreover, the lava channel fed from the fissure vent shows evidence of successive lava overspills whose emplacement was topographically controlled. These observations suggest that, in contrast to the general inference that Amazonian‐age volcanism mainly involves effusive eruptions, explosive‐origin landforms might have been overlooked. Therefore, we argue that high‐resolution mapping of pyroclastic deposits may provide critical insights into understanding the dynamic nature of Martian fissure eruptions and explosive‐associated volatile release during the last stages of eruptions.

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Section: Discussionmentioning

confidence: 99%

Section: Journal Of Geophysical Research: Planetsmentioning

confidence: 99%

The Morphology of Martian Pyroclastic Ramparts and Their Use in Determining Vent‐Proximal Eruption Dynamics

Pieterek,

Jones,

Wilson

2024

JGR Planets

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“…Brunetti et al, 2014;Legros, 2002;Lucchitta, 1978Lucchitta, , 1979McEwen, 1989). However, the avail- ability of higher-resolution orbital imagery has shown the existence of Martian long-runout landslides that are smaller and similar in size to terrestrial long-runout landslides (Crosta et al, 2018;Guimpier et al, 2021Guimpier et al, , 2022.…”

Section: Morphometric Comparisonmentioning

confidence: 99%

Long-runout landslides with associated longitudinal ridges in Iceland as analogues of Martian landslide deposits

Magnarini,

Champagne,

Morino

et al. 2024

Earth Surf. Dynam.

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Abstract. Much work has been done to study the behaviour of long-runout landslides and their associated longitudinal ridges, yet the origin of the hypermobility of such landslides and the formation mechanism of longitudinal ridges are poorly understood. As terrestrial long-runout landslides emplaced on glaciers commonly exhibit longitudinal ridges, the presence of these landforms has been used to infer the presence of ice on Mars, where hundreds of well-preserved long-runout landslides with longitudinal ridges are found. However, the presence of the same landforms in regions where extensive glaciations did not occur, for instance, on the Moon and in the Atacama region on Earth, suggests that ice is not the only factor influencing the formation of long-runout landslides with longitudinal ridges. Iceland is a unique region for its high spatial density of well-preserved long-runout landslides with longitudinal ridges. Here, we compiled the first catalogue of Icelandic long-runout landslides with longitudinal ridges, and we compared them with Martian long-runout landslides with longitudinal ridges of similar length. Moreover, we present detailed morphological observations of the Dalvík landslide deposit, in the Tröllaskagi peninsula, Iceland, and compare them with morphological observations of Martian landslides. Our results show that Icelandic long-runout landslides share key features with Martian analogue deposits, including splitting of longitudinal ridges and development of associated en echelon features. Therefore, Icelandic long-runout landslides with longitudinal ridges represent good morphological analogues of Martian long-runout landslides. Moreover, Iceland offers an opportunity to investigate the occurrence of these landforms at a regional scale, as well as their link with deglaciation following the Last Glacial Maximum, which could also provide insights into Martian palaeoclimatic and palaeoenvironmental conditions.

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“…The statistics of the morphometry of small martian landslides is summarised in Figure 12 and The gigantic, long runout landslides on Mars have attracted much interest, giving rise to a common commonly accepted belief that martian landslides are an order of magnitude larger than terrestrial landslides (e.g., Brunetti et al, 2014;Legros, 2002;Lucchitta, 1978Lucchitta, , 1979McEwen, 1989). However, the availability of higher resolution orbital imagery has shown the 230 existence of martian long runout landslides that are smaller and similar in size to terrestrial long runout landslides (Crosta et al, 2018;Guimpier et al, 2021Guimpier et al, , 2022. Not only they share morphometric similarities, but also morphological structures: in addition to longitudinal ridges, they are all characterised by steep terminal edges; additionally, both the Icelandic and martian populations can develop lateral levees or toreva blocks, and have their headscarps either at the top of cliffs or at a mid-to-lower part of slopes.…”

Section: Martian Long Runout Landslides With Longitudinal Ridgesmentioning

confidence: 99%

Long Runout Landslides with Associated Longitudinal Ridges in Iceland as Analogues of Martian Landforms

Magnarini,

Champagne,

Morino

et al. 2023

Preprint

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Abstract. Much work has been done to study the behaviour of long runout landslides and their associated longitudinal ridges, yet the origin of the hypermobility of such landslides and the formation mechanism of longitudinal ridges are poorly understood. As terrestrial long runout landslides emplaced on glaciers commonly exhibit longitudinal ridges, the presence of these landforms has been used to infer the presence of ice on Mars, where hundreds of well-preserved long runout landslides with longitudinal ridges are found. However, the presence of the same landforms in regions where extensive glaciations did not occur, for instance, on the Moon and in the Atacama region on Earth, suggests that ice is not the only factor influencing the formation of long runout landslides with longitudinal ridges. Iceland is a unique region for its high spatial density of well-preserved hypermobile large landslides with longitudinal ridges. Here, we compiled the first catalogue of Icelandic long runout landslides with longitudinal ridges and we compared them with martian long runout landslides with longitudinal ridges of similar length. Moreover, we present detailed morphological observations of the Dalvík landslide deposit, in the Tröllaskagi peninsula, Iceland and compare them with morphological observations of martian landslides. Our results show that Icelandic long runout landslides share key features with martian analogue deposits, including splitting of longitudinal ridges and development of associated en-echelon features. Therefore, Icelandic long runout landslides with longitudinal ridges represent good analogues of martian landforms. Moreover, Iceland represents the ideal site to investigate these landforms at a regional scale and their link with ice retreat following the Late Glacial Maximum, which could also provide insights into martian paleoclimatic and paleoenvironmental conditions.

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Pre-landslide topographic reconstruction in Baetis Chaos, mars using a CaSSIS Digital Elevation Model

Cited by 3 publications

References 33 publications

The Morphology of Martian Pyroclastic Ramparts and Their Use in Determining Vent‐Proximal Eruption Dynamics

The Morphology of Martian Pyroclastic Ramparts and Their Use in Determining Vent‐Proximal Eruption Dynamics

Long-runout landslides with associated longitudinal ridges in Iceland as analogues of Martian landslide deposits

Long Runout Landslides with Associated Longitudinal Ridges in Iceland as Analogues of Martian Landforms

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