Tag Archives: gullies

THEMIS: Asimov Crater rim and infill

THEMIS Image of the Day, December 12, 2018. Located in Noachis Terra, Asimov Crater has an unusual crater floor morphology. At some point after the crater formed, the interior was filled by materials that reached almost to the top of … Continue reading

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THEMIS: Rim of two craters

THEMIS Image of the Day, December 11, 2018. In the center of this VIS image is a crater rim, which is shared by two craters. The crater with the deeper floor is at the bottom of the image, and this … Continue reading

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THEMIS: Gullies in Noachis Terra

THEMIS Image of the Day, December 10, 2018. Numerous channels, also called gullies, dissect the rim of this unnamed crater in Noachis Terra. (Note that the lighting in this image comes from the lower right.) At upper right lies a … Continue reading

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THEMIS: Crater-wall gullies in Aonia Terra

THEMIS Image of the Day, December 3, 2018. Today’s VIS image shows an unnamed crater located in Aonia Terra. Numerous gullies dissect the inner crater rim. This crater impacted onto the rim of the much larger Slipher Crater. See more … Continue reading

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THEMIS: Gullies etch a crater rim in Terra Cimmeria

THEMIS Image of the Day, November 16, 2018. Multiple gullies dissect the rim of this unnamed crater in Terra Cimmeria. The soft-looking material at the foot of the rim (where it meets the crater floor) may contain buried ice. See … Continue reading

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HiRISE: Monitoring frost in Raga Crater

Monitoring frost in Raga Crater. We’re watching frost up-slope from known new gully flows in Raga. These appear to be distinct from recurring slope lineae we’ve seen in other craters. Beautiful Mars series. [More at links]

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HiRISE: Shadowed gullies in Dunkasa Crater

Hide all you want, gullies! That shadow of Dunkasa Crater is no match for us, especially when we can use Photoshop to bring out your enhanced colors. Beautiful Mars series. [More at links]

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THEMIS: Crater rim gullies in Terra Sirenum

THEMIS Image of the Day, November 6, 2018. Numerous gullies dissect the northern rim of this unnamed crater in Terra Sirenum. The inside of the north rim faces away from the Sun and is more deeply gullied than the Sun-facing … Continue reading

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HiRISE: A caldera’s steep slopes

This image shows part of the steep wall of the caldera (a large volcanic crater) at the top of Ascraeus Mons, one of Mars’ giant volcanoes. We can see chutes carved into the soft dust that has built up on … Continue reading

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HiRISE: Monitoring frost in Corozal Crater

Monitoring frost in Corozal Crater. Corozal Crater has both active gullies and recurring slope lineae. We are monitoring the evolution of seasonal frost, which is the likely trigger for gully activity. Never mind the hulking shadow at the left. Beautiful … Continue reading

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