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Formation of Recent Martian Debris Flows by Melting of Near-Surface Ground Ice at High Obliquity
It is shown that these gullies on Mars may result from the melting of water ice in the top few meters of the martian subsurface at high obliquity, and that above-freezing temperatures can occur in the near surface of Mars, but are only predicted at latitudes and for slope orientations corresponding to where the gullies have been observed on Mars. Expand
Ice in the Martian regolith
A number of possible morphologic indicators of ground ice on Mars are discussed, with emphasis on rampart craters and terrain softening. Geologic evidence indicates that the Martian surface has beenExpand
Debris flows over sand dunes on Mars: Evidence for liquid water
[1] This study focuses on the formation and physical properties of the gullies observed over large Martian dunes, especially those of the Russell crater (54°S, 347°W). Geomorphic features likeExpand
Standardizing the nomenclature of Martian impact crater ejecta morphologies
The Mars Crater Morphology Consortium recommends the use of a standardized nomenclature system when discussing Martian impact crater ejecta morphologies. The system utilizes nongenetic descriptors toExpand
Impact of the global warming on the fluvial thermal erosion over the Lena River in Central Siberia
[1] The hydrology of the Lena and its tributaries is characterized by an extremely episodic flow regime. Here we report recent climatic change in Central Siberia, and its impact on the fluvialExpand
Orientation and distribution of recent gullies in the southern hemisphere of Mars: Observations from High Resolution Stereo Camera/Mars Express (HRSC/MEX) and Mars Orbiter Camera/Mars Global Surveyor
Geologically recent small gullies on Mars display morphologies consistent with erosion by water or by debris flows. Suggested formation models are divided into two main categories: (1) groundwater orExpand
Outwash Plains and Thermokarst on Mars
Abstract The spatial distribution of different types of rampart craters on Mars suggests a hemispheric asymmetry in the distribution of ground ice. The northern plains, especially major topographicExpand
The spatial distribution of volatiles in the Martian hydrolithosphere
In order to quantify the spatial distribution of volatiles on Mars, 2600 fluidized ejecta craters have been systematically measured, classified and mapped over the planet Mars, using 1 : 2 M scaleExpand
Morphology, evolution and tectonics of Valles Marineris wallslopes (Mars)
Abstract Hillslopes up to 11 km in height can be found along the walls of the Valles Marineris troughs. The widest and deepest troughs are grabens, in which tectonics probably exerted the primaryExpand
Spatial relationships between patterned ground and ground ice detected by the Neutron Spectrometer on Mars
[1] Patterned grounds, like polygonal features, are the signature of climatic effects in periglacial regions on Earth. Identifying similar features on Mars is important for an understanding of theExpand