Tag Archives: RSL

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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Do slope streaks show global-scale water processes on Mars today?

Posted on January 9, 2019 by rburnham

[Editor’s note: From a paper by Anshuman Bhardwaj and three co-authors recently published in Reviews of Geophysics.] Are Slope Streaks Indicative of Global‐Scale Aqueous Processes on Contemporary Mars? • We provide a systematic survey and evaluation of the literature covering … Continue reading →

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HiRISE: Eastern slope of Asimov Crater’s central pit

Posted on December 13, 2018 by rburnham

Asimov is an 84-kilometer diameter crater located in the southern ancient highlands of Mars. It is distinguished from other craters in this region in that it contains both a ring-depression just within the crater rim and a pit near the … Continue reading →

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HiRISE: Monitoring frost in Raga Crater

Posted on November 15, 2018 by rburnham

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: Monitoring frost in Corozal Crater

Posted on October 25, 2018 by rburnham

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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HiRISE: The Case of the Lurking Frost

Posted on September 4, 2018 by rburnham

HiRISE and the Case of the Lurking Frost. Sheltered by these cliffs, we can see frost build up, along with lots of sedimentary rocks. This area is also a good candidate for recurring slope lineae. Beautiful Mars series. [More at … Continue reading →

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HiRISE: Slopin’ around

Posted on April 26, 2018 by rburnham

Slopin’ around. We’ve imaged recurring slope lineae in this area, but with a twist: the RSL here are east- and northeast-facing, which makes them more unique as there actually aren’t that many east-facing RSL anywhere on the planet. Plus, the bedrock … Continue reading →

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HiRISE: Strata always have a story

Posted on April 4, 2018 by rburnham

Strata always have a story. This area is located within the massive Valles Marineris canyon system, and was suggested to monitor for recurring slope lineae on a slope to the south, but we thought the gorgeous bedrock deserved to be … Continue reading →

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RSLs are flowing sand, not water?

Posted on November 27, 2017 by rburnham

Dark features previously proposed as evidence for significant liquid water flowing on Mars have now been identified as granular flows, where sand and dust move rather than liquid water, according to a new article published in Nature Geoscience by the … Continue reading →

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Water ice is buried near Mars equator in small areas

Posted on August 17, 2017 by rburnham

A re-analysis of data from the Neutron Spectrometer on NASA’s Mars Odyssey orbiter has nearly doubled the data’s resolution. The higher-resolution data show that small deposits of water ice lie buried at shallow depths near the martian equator in several … Continue reading →

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