نتایج جستجو برای: yardang
تعداد نتایج: 33 فیلتر نتایج به سال:
Introduction: Yardangs are wind-eroded ridges common in regions of Mars [1] and in the most arid deserts on Earth. Yardangs have also been documented on both Venus [2] and Titan [3]. Throughout the years, studies of yardangs have concentrated on particular field sites, and therefore conclusions relating to the controlling parameters on yardang morphology have been highly divergent. Many variabl...
Isolated landscapes largely shaped by aeolian processes can occur on Earth, while the majority of Mars' recent history has been dominated by wind-driven activity. Resultantly, Martian landscapes often exhibit large-scale aeolian features, including yardang landforms carved from sedimentary-layered deposits. High-resolution orbital monitoring has revealed that persistent bedform activity is occu...
[1] Landforms, morphologically similar to aeolian yardangs but formed by erosion of bedrock by currents on an estuarine rock platform, are described for the first time. The geometries of the “yardangs” are described and related to semi-lemniscate shapes that minimize hydraulic drag. The processes of bedrock erosion by the reversing sedimentladen tidal currents are described, and a semi-quantita...
Gale crater is a large impact with ca 5 km thick sequence of stratified rocks in it, expressed today as central eroded mound (i.e., Aeolis Mons informally named Mt. Sharp). A goal the current Mars Science Laboratory mission to investigate processes that deposited, lithified, and this fill. The Light-Toned Yardang Unit (LTYu) unit, subject present research, one geological units Mt Sharp. Our spe...
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