Tag Archives: sand dunes

HiRISE: North flank of Ceti Mensa

The north flank of Ceti Mensa. There is some possible soft-sediment deformation in this area. The region has attracted attention because its deep red color in images collected by the Viking Orbiter mission during the 1970s. Beautiful Mars series. [More … Continue reading

Posted in Reports | Tagged , , , , , , , , , , | Comments Off

Seeing Mars in a grain of sand

[Ed. note: The following is a guide to two recent special issues of the Journal of Geophysical Research; both collect papers reporting on studies of the Bagnold Dunes in Gale Crater. The guide complements the MSL report posted earlier here.] … Continue reading

Posted in Reports | Tagged , , , , , , , , , , , , , , , , , , | Comments Off

HiRISE: Colorful impact

Some regions of Mars are not very colorful, but we can be surprised by local features. This image of an impact crater in the south Syrtis Major region was acquired as a “ride-along” with a CRISM observation, which targeted this … Continue reading

Posted in Reports | Tagged , , , , , , , , , , | Comments Off

HiRISE: Summit dunes and their sand sources

The ultimate origin of the sediment that forms Martian dunes has long been debated. While sand dunes on Earth are primarily sourced by quartz-bearing components of granitic continental crust, it’s often suggested that sand on Mars derives from eroded volcanic … Continue reading

Posted in Reports | Tagged , , , , , , , , | Comments Off

THEMIS: North polar dunes meet Escorial Crater

THEMIS Image of the Day, September 25, 2018. At the bottom of this image is Escorial Crater. The dune field to the north are called Hyperboreae Undae. The subtle blue and yellow arcs over the crater are clouds. The THEMIS … Continue reading

Posted in Reports | Tagged , , , , , , , , , , , | Comments Off

HiRISE: Dark dunes in Ius Chasma

Dark dunes in Ius Chasma. This image is part of a campaign to monitor the dunes over three Martian years. Beautiful Mars series. [More at links]

Posted in Reports | Tagged , , , , , , , , , | Comments Off

HiRISE: The other Pan’s labyrinth

The other Pan’s labyrinth. These polar dunes are located near source of gypsum. Beautiful Mars series. [More at links]

Posted in Reports | Tagged , , , , , , , , , , , | Comments Off

HiRISE: Rough texture, dark dunes

Rough texture, dark dunes. There is a variety of substrate textures in this image, including a ridge-groove corrugation that is reminiscent of some features in Gale Crater. Beautiful Mars series. [More at links]

Posted in Reports | Tagged , , , , , , , , , | Comments Off

HiRISE: Sand sea monitoring

Sand sea monitoring. This ocean of dunes is located within central Juventae Chasma. Beautiful Mars series. [More at links]

Posted in Reports | Tagged , , , , , , , , , | Comments Off

THEMIS: Dunes and Escorial Crater ejecta in false color

THEMIS Image of the Day, September 13, 2018. The ‘brown’ in this VIS image is part of the ejecta surrounding Escorial Crater. The material of the ejecta blanket is much more resistant to local winds and remains as a plateau … Continue reading

Posted in Reports | Tagged , , , , , , , , , , , | Comments Off