Next, they used their model to predict the transition from barren, arc-shaped barchan dunes to parabolic dunes covered in vegetation. This occurs when the transport of sand drops below a certain ...

Mars, along with parts of Earth, is covered in what are called barchan dunes—features shaped into crescents by wind activity and their positions in a valley or a crater. Next, why don’t we ...

On the west (left) side of this image from NASA’s Mars Reconnaissance Orbiter, fairly textbook-looking barchan sand dunes sit atop the bedrock. Barchan dunes pointing in the opposite direction ...

Among the various types of dunes, a barchan is known to form when the ... "The grain rises about a meter and describes a parabolic curve. The direction of flight is the main direction of the ...

No sand dune is an island. Interactions between crescent-shaped, or barchan, dunes stabilize the mounds and explain how vast swarms of them can persist over time, two new studies find. But the ...

Some types of sand dunes can do this in the real world. According to a report published today in the journal Nature, so-called barchan sand dunes, which are crescent-shaped and highly mobile ...

According to Johns Hopkins scientist Ralph Lorenz, who co-authored the Geomorphology paper, Dunes on Planet Tatooine: Observation of Barchan Migration at the Star Wars Film Set in Tunisia ...

The smooth curve with long trailing points is characteristic shape of a barchan dune, commonly created by a limited sand supply exposed to steady winds. Dunes are an aeolian feature, created by ...