Tag Archives: gullies

HiRISE: Frost highlights in springtime

Posted on September 5, 2019 by rburnham

This image of a crater rim strikingly shows what appear to be bright white flows coming from gullies in the crater wall. However, HiRISE has been watching these gullies for some time (going all the way back to our first … Continue reading →

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Small amounts of CO2 can get Mars gullies flowing

Posted on August 29, 2019 by rburnham

[Editor’s note: From a paper by Tjalling de Haas and six co-authors recently published in the Journal of Geophysical Research.] Initiation and Flow Conditions of Contemporary Flows in Martian Gullies • We use RAMMS to back calculate initial and flow … Continue reading →

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THEMIS: Mega-gullies in Sinai Planum

Posted on July 31, 2019 by rburnham

THEMIS Image of the Day, July 31, 2019. Today’s VIS image shows part a section of a mega gully. Located on the plains of Sinai Planum, it is just one of a number of huge channels that line the cliff … Continue reading →

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HiRISE: The hills in Eos Chasma

Posted on July 25, 2019 by rburnham

The hills in Eos Chasma. They may not be alive with the sound of music, but we’ll take the opportunity to look for recurring slope lineae, small gullies and slumped material. HiRISE Picture of the Day archive. [More at links]

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THEMIS: Slopes and dunes of Sisyphi Cavi

Posted on May 2, 2019 by rburnham

THEMIS Image of the Day, May 2, 2019. This VIS image shows part of Sisyphi Cavi located in Noachis Terra near the south polar cap. Cavi are defined as steep sided depressions. Gullies dissect the cliff tops and dunes are … Continue reading →

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THEMIS: Terra Cimmeria crater gullies

Posted on April 24, 2019 by rburnham

THEMIS Image of the Day, April 24, 2019. This VIS image shows part of the rim of an unnamed crater in Terra Cimmeria. A group of channels dissect the rim near to upper left of the image. These channels are … Continue reading →

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HiRISE: Gullies on Gorgonum Chaos mesas

Posted on April 15, 2019 by rburnham

Gullies on Gorgonum Chaos mesas. This observation shows part of Gorgonum Chaos, a large cluster of chaotic terrain found in the Southern Hemisphere. Many regions of chaotic terrain are found at the head of large outflow channels that were scoured … Continue reading →

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HiRISE: Complex gullies in a crater

Posted on March 21, 2019 by rburnham

Most gullies in the southern mid-latitudes are on south-facing slopes, which are the coldest and have the most frost in the winter. However, some occur on other slopes. This image shows large gullies on both the pole- and equator-facing slopes. … Continue reading →

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HiRISE: In the gullies and bedrock of Ius Chasma

Posted on March 20, 2019 by rburnham

This image was acquired in Ius Chasma, a major section of the western portion of the giant Valles Marineris trough. We see a portion of a steep slope with gullies extending downhill (towards bottom of image). Many of the gully … Continue reading →

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THEMIS: Big impacts and little in Terra Cimmeria

Posted on March 13, 2019 by rburnham

THEMIS Image of the Day, March 13, 2019. This VIS image contains three craters. There is a quarter of the largest crater in the top half of the image, half of a smaller crater at the very top, and the … Continue reading →

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