Tag Archives: dark slope streaks

HiRISE: Triggered!

Posted on July 8, 2019 by rburnham

Triggered! A possible new impact site (formed at most between February 2004 and December 2011) is the likely cause of these slope streaks. Dark blast zones not seen in other images with lower resolution than HiRISE can often trigger a … Continue reading →

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HiRISE: Wisps

Posted on June 10, 2019 by rburnham

Wisps. This rough terrain with prominent, wispy dust streaks is within Mangala Valles. Mangala Valles is a complex system of criss-crossing channels on Mars, located in the Tharsis region. HiRISE Picture of the Day archive. [More at links]

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HiRISE: Impact-induced dust avalanches

Posted on April 16, 2019 by rburnham

HiRISE has been imaging new dark features discovered by MRO’s Context Camera, which are mostly new impact sites. In this scene we see what appears to be a new impact cluster and, extending downhill from the craters, new dark slope … Continue reading →

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HiRISE: An Olympus Mons landslide

Posted on February 12, 2019 by rburnham

An Olympus Mons landslide. Olympus Mons is too large for HiRISE to capture in one image, but we can get very detailed closeups of parts of it. Here, we see a slope streak, possibly caused by a boulder rolling downhill … 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: Slope streaking

Posted on December 12, 2018 by rburnham

We have been monitoring the slope streaks on this hill for several years. There are definitive changes between this September 2018 image and a previous one in December 2016. Earlier streaks have since faded and new, darker streaks are visible. … Continue reading →

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HiRISE: Rising above it in Amazonis Planitia

Posted on October 15, 2018 by rburnham

This image shows a bright, rectangular-looking landform surrounded by a dark floor. How did this feature get here if it looks so different than its surroundings? The feature resembles a plateau. Dark streaks mark steep slopes on its sides while … Continue reading →

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THEMIS: Dark streaks on the rim of Orcus Patera

Posted on August 15, 2018 by rburnham

THEMIS Image of the Day, August 15, 2018. Today’s VIS image is located on the western margin of Orcus Patera. Dark slope streaks are present on most ridges in the image. Formation of these features is linked to a change … Continue reading →

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THEMIS: Crosscross tectonics in Lycus Sulci

Posted on August 14, 2018 by rburnham

THEMIS Image of the Day, August 14, 2018. Lycus Sulci is a very complex region surrounding the northern and western flanks of Olympus Mons. This VIS image shows some of the tectonic features found in Lycus Sulci as well as … Continue reading →

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THEMIS: Terra Sabaea dark slope streaks

Posted on August 9, 2018 by rburnham

THEMIS Image of the Day, August 9, 2018. This VIS image is located in Terra Sabaea. The ridge near the right side of the image contains dark slope streaks. These features are thought to form by downslope movement of material … Continue reading →

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