Gully Formation and Evolution in the Antarctic Dry Valleys: Implications

Transient streams and gullies in the Antarctic Dry Valleys: Geological setting, processes and analogs to Mars

Figure 1. Left: Gully system in the ADV, consisting of alcove, channel and fan; wind-blown snow has collected in topographic traps (alcove, channels); summer melting causes flow and erosion/deposition. Right: Gully system on Mars. Transient streams and gullies in the Antarctic Dry Valleys: Geological setting, processes and analogs to Mars J. W. Head, D. R. Marchant, J. Dickson, J. Levy, and G. ...

Slope streaks in the Antarctic Dry Valleys: Characteristics, candidate formation mechanisms, and implications for slope streak formation in the Martian environment

Figure 2. Slope Streaks in the ADV; Left: digitate streaks, image width 220 m; Right: parallel streaks and effect of local topography at lower left; image width 260 m. Slope is 20-30, top to bottom. Slope streaks in the Antarctic Dry Valleys: Characteristics, candidate formation mechanisms, and implications for slope streak formation in the Martian environment J. W. Head, D. R. Marchant, J. L. ...

Gully Formation on Mars: Testing the Snowpack Hypothesis from Analysis of Analogs in the Antarctic Dry Valleys

Introduction: Gullies, a class of unusually young features on Mars consisting of an alcove, a channel and a fan, were initially interpreted to have originated through processes related to the presence of liquid water, primarily through groundwater discharge [1,2]; the current metastability of liquid water on the surface of Mars generated a host of alternative explanations for the gullies [see s...

Mars Gully Analogs in the Antarctic Dry Valleys: Geological Setting and Processes

Introduction: Malin and Edgett [1,2] initially described a class of young features on Mars that they termed gullies, consisting of an alcove, a channel and a fan. Restricted to middle and high latitude locations, these features were interpreted to have originated through processes related to the presence of liquid water (through groundwater discharge); the potential presence of liquid water on ...

Sources of Water for Gulley Formation in the Antarctic Dry Valleys: Multi- Year Analysis of Precipitation and Temperature in the South Fork of Upper Wright Valley and Implications for the Origin of Gullies on Mars