Tag Archives: sand dunes

HiRISE: Defrosting dunes within Chasma Boreale

This image shows a dune field in Chasma Boreale, which is a large trough that cuts into the North Polar ice cap. Some of the dunes in this image are quite long and sinuous with a slight bulge at one … Continue reading

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THEMIS: Dunes and wrinkle ridge, Meroe Patera

THEMIS Image of the Day, October 26, 2017. This image shows part of the dune field near Meroe Patera. High resolution imaging by other spacecraft has revealed that the dunes in this region are moving. Winds are blowing the dunes … Continue reading

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THEMIS: Large wrinkle ridge in Meroe Patera

THEMIS Image of the Day, October 25, 2017. This image shows part of the dune field near Meroe Patera. The large ropy ridge running down the picture is a wrinkle ridge. These are caused when compression forces cause lava flows … Continue reading

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HiRISE: Squiggles in Hellas Planitia

At around 2,200 kilometers in diameter, Hellas Planitia is the largest visible impact basin in the Solar System, and hosts the lowest elevations on Mars’ surface as well as a variety of landscapes. This image covers a small central portion … Continue reading

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THEMIS: Dunes, wrinkle ridges, wind streaks

THEMIS Image of the Day, October 24, 2017. This image shows part of the dune field near Meroe Patera. High resolution imaging by other spacecraft has revealed that the dunes in this region are moving. Winds are blowing the dunes … Continue reading

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THEMIS: Thin lines of dunes on Meroe Patera

THEMIS Image of the Day, October 23, 2017. This image shows part of the dune field near Meroe Patera. High resolution imaging by other spacecraft has revealed that the dunes in this region are moving. Winds are blowing the dunes … Continue reading

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THEMIS: Wind streaks near Meroe Patera

THEMIS Image of the Day, October 20, 2017. This image shows part of the dune field near Meroe Patera. High resolution imaging by other spacecraft has revealed that the dunes in this region are moving. Winds from the northeast (upper … Continue reading

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THEMIS: Dunes in Nili Patera

THEMIS Image of the Day, October 19, 2017. This is a false color image of part of the Nili Patera dune field. High resolution imaging by other spacecraft has revealed that the dunes in this region are moving. Winds are … Continue reading

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HiRISE: Where does the sand come from?

The grains of sand that make up sand dunes on Earth and Mars have a hazardous existence because of the way that they travel. Wind-blown sand is lifted above the surface of each planet before crashing onto the ground and … Continue reading

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THEMIS: Nili Patera dunes in false color

THEMIS Image of the Day, October 18, 2017. This is a false color image of part of the Nili Patera dune field. High resolution imaging by other spacecraft has revealed that the dunes in this region are moving. Winds are … Continue reading

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