Tag Archives: dune gullies

HiRISE: Watching the dune gullies

Posted on July 10, 2019 by rburnham

Watching the dune gullies. When dune gullies are as gorgeous as these, it’s an easy thing to want to continue to observe them for any seasonal changes. These are located in Matara Crater, a region that we’ve monitored before many … Continue reading →

Posted in Reports | Tagged dune gullies, dunes, High Resolution Imaging Science Experiment, HiPOD, HiRISE, HiRISE Picture of the Day, Mars Reconnaissance Orbiter, Matara Crater, MRO, NASA, sand dunes, seasonal processes, University of Arizona | Comments Off

HiRISE: Gullies of Matara Crater

Posted on April 6, 2018 by rburnham

Gullies on Martian sand dunes, like these in Matara Crater, have been very active, with many flows in the last ten years. The flows typically occur when seasonal frost is present. Here, we see frost in and around two gullies, … Continue reading →

Posted in Reports | Tagged dune gullies, dunes, frost, gullies, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, Matara Crater, MRO, NASA, sand dunes, University of Arizona | Comments Off

Opportunity begins study of valley’s origin

Posted on May 17, 2017 by rburnham

NASA’s Mars Exploration Rover Opportunity has reached the main destination of its current two-year extended mission — an ancient fluid-carved valley incised on the inner slope of a vast crater’s rim. As the rover approached the upper end of “Perseverance … Continue reading →

Posted in Reports | Tagged Cape Byron, dune gullies, Endeavour Crater, Mars Exploration Rover, MER, NASA, Opportunity, Perseverance Valley | Comments Off

HiRISE: Glowing gullies in Kaiser Crater dunes

Posted on July 1, 2016 by rburnham

The giant sand dunes in Kaiser Crater experience gully erosion of the steep slip faces every year in late winter as the sun warms these slopes and seasonal carbon dioxide frost sublimates (meaning it changes from a solid to gas). … Continue reading →

Posted in Reports | Tagged dune gullies, dunes, gullies, High Resolution Imaging Science Experiment, HiRISE, Kaiser Crater, Mars Reconnaissance Orbiter, MRO, NASA, sand dunes, University of Arizona | Comments Off

HiRISE: Dune gullies in the Argyre region

Posted on March 16, 2016 by rburnham

Like silk — Dune gullies in the Argyre region. Beautiful Mars series.

Posted in Reports | Tagged Argyre basin, Beautiful Mars, dune gullies, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, University of Arizona | Comments Off

HiRISE: Active high-latitude dune gullies

Posted on June 22, 2015 by rburnham

Gully and defrosting activity have been visible here along the edge of a dune field, along with blocks of frost. Observations of the same area help us check for repeat activity, as well as measuring those meter-scale blocks that we’ve … Continue reading →