Introduction: First identified by Malin and Edgett [1], gullies are among the youngest and most enigmatic geomorphic features on Mars. Originally hypothesized to be the result of confined aquifer breakouts, they have subsequently been interpreted to be the result of dry mass flows (e. shown persuasively that the global distribution of gullies is preferential. The greatest concentrations of gull...

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Introduction: The latitude dependent distribution [1-3] and non-uniform orientations [4-8] of young gullies on Mars suggest that their formation and modification are controlled by the activity of volatiles at or near the surface. Given the relative abundance of gullies and Mars' current thermal environment, CO 2 and H 2 O are the most likely candidates for contributing to gully evolution. Conte...

The mode of formation of gullies on Mars, very young erosional–depositional landforms consisting of an alcove, channel, and fan, is one of the most enigmatic problems in martian geomorphology. Major questions center on their ages, geographic and stratigraphic associations, relation to recent ice ages, and, if formed by flowing water, the sources of the water to cause the observed erosion/deposi...

Permanent gullies are a serious type of soil erosion. A special permanent gully, called “Benggang” severly affects agricultural production in hilly areas. To reveal the influence Benggang erosion on granitic restoration and fertility, we selected three stages (active, semi-stable stable) recovery subtropical granite region, corresponding samples were collected to analyze spatial variation physi...

The European Commission's Thematic Strategy for Soil Protection (COM(2012)46) identified soil erosion as an important threat to Union's (EU) resources. Gully is but hitherto poorly understood component of this threat. Here we present the results unprecedented attempt monitor occurrence gully across EU and UK. We integrate a module into 2018 LUCAS Topsoil Survey, which was conducted health statu...

We report on a decade of fieldwork designed to determine the conditions required for erosion of Mars-like gully channels in the McMurdo Dry Valleys (MDV) of Antarctica. We have outlined the major factors in the morphological evolution of gullies in the Inland Mixed Zone of the MDV: (1) the distribution of ice sources; (2) the temporal aspects of ice melting; and (3) the relative significance of...

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 ...