Tag Archives: gullies

HiRISE: A winter’s view of a gullied crater

This is the location with the most impressive known gully activity in the Northern hemisphere. Gullies are active in the winter due to carbon dioxide frost, but northern winters are shorter and warmer than southern winters, so there is less … Continue reading

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HiRISE: Gully monitoring

Gully monitoring. Beautiful Mars series.

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THEMIS: Two impacts in one at Gasa Crater

THEMIS Image of the Day, April 7, 2017. The small crater on the floor of the larger crater is called Gasa Crater. Gullies dissect the rims of both craters. These craters are located in Eridania Planitia. As most impacts from … Continue reading

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HiRISE: Deeply incised gullies and arcuate ridges

Deeply incised gullies and arcuate ridges. Beautiful Mars series.

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HiRISE: Gully monitoring in Kamnik Crater

Gully monitoring in Kamnik Crater. Beautiful Mars series.

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THEMIS: Gullies eroding rim of Noachis Terra crater

THEMIS Image of the Day, April 3, 2017. Many gullies dissect the inner rim of this unnamed crater in Noachis Terra. More THEMIS Images of the Day by geological topic.

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HiRISE: Distinctive brightness

This full-resolution image is centered on a bright deposit at the end of a gully channel. The bright deposit does not seem to be present in an image acquired several years earlier than 2009, and is likely to be very … Continue reading

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THEMIS: Gullies on a big dune

THEMIS Image of the Day, March 27, 2017. Today’s VIS image shows part of the large dune form on the floor of Russell Crater. The big dune is scarred by gullies, with little dunes gathering at the gullies’ ends. More … Continue reading

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HiRISE: Hanging valleys in Dao Vallis

Hanging valleys in Dao Vallis. Beautiful Mars series.

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HiRISE: Gullies in winter shadow

This is an odd-looking image. It shows gullies during the winter while entirely in the shadow of the crater wall. Illumination comes only from the winter skylight. We acquire such images because gullies on Mars actively form in the winter … Continue reading

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