Tag Archives: University of Arizona

HiRISE: Of dunes and their stories

Posted on June 18, 2018 by rburnham

Of dunes and their stories. So far no seasonal changes have been detected here, making this site unique. Beautiful Mars series. [More at links]

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HiRISE: Once in a blue dune

Posted on June 14, 2018 by rburnham

Sand dunes often accumulate in the floors of craters. In this region of Lyot Crater there is a field of classic barchan dunes. Just to the south of the group of barchan dunes is one large dune with a more … Continue reading →

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HiRISE: Dust and frost

Posted on June 13, 2018 by rburnham

Sand dunes in the north polar regions of Mars show light coatings of pale orange dust blown partially across the dark basaltic sand. Around the edges of the dunes, patches of seasonal dry ice remain. These patches will be gone … Continue reading →

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HiRISE: Bang and whoosh!

Posted on June 12, 2018 by rburnham

This HiRISE image captures a new, dated (within about a decade) impact crater that triggered a slope streak. When the meteoroid hit the surface and exploded to make the crater, it also destabilized the slope and initiated this avalanche. The … Continue reading →

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HiRISE: East Endeavour Crater dune field monitoring

Posted on June 11, 2018 by rburnham

East Endeavour Crater dune field monitoring. We’re monitoring to detect surface change of dunes shown to be active from past HiRISE observations. Beautiful Mars series. [More at links]

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HiRISE: A volcano — of mud or lava?

Posted on June 11, 2018 by rburnham

This image shows a hill with a central crater. Such features have been interpreted as both mud volcanoes (really a sedimentary structure) and as actual volcanoes (the erupting lava kind). They occur on the floor of Valles Marineris below a … Continue reading →

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HiRISE: Light-toned material in Gorgonum Chaos crater

Posted on June 8, 2018 by rburnham

Light-toned material within the center of a crater in Gorgonum Chaos basin. The rocks within the center of this crater are light-toned and appear altered relative to the rocks that define the crater wall. Beautiful Mars series. [More at links]

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HiRISE: Dark and possibly stationary ripples

Posted on June 7, 2018 by rburnham

Dark and possibly stationary ripples in anomalous terrain.  These strange ripples are in some anomalous terrain on the Olympus Mons aureole. These dark ripples have not been imaged in about 8 years, so another shot should show movement…if there IS … Continue reading →

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HiRISE: Ever winding

Posted on June 6, 2018 by rburnham

Ever winding. This image (and its partner) was acquired to compare against an earlier stereo pair of the same region several years ago to determine if any changes have occurred. Beautiful Mars series. [More at links]

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HiRISE: Strangely silent in southwest Arabia Terra

Posted on June 5, 2018 by rburnham

Strangely silent in southwest Arabia Terra. Beautiful Mars series. [More at links]

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