Tag Archives: sand dunes

THEMIS: Milankovic Crater dunes

Posted on June 4, 2018 by rburnham

THEMIS Image of the Day, June 4, 2018. Milankovic Crater is located in central Arcadia Planitia. This VIS image shows small dark sand dunes on the crater floor, and larger dunes within the central crater peak/pit feature. With a diameter … Continue reading →

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

HiRISE: Corduroy dunes

Posted on May 31, 2018 by rburnham

Corduroy dunes. The permanent polar cap of Mars is encircled by sand dunes and looking like pulled threads, these dunes march across a fabric of patterned ground. At this time of the Martian year they are free of the seasonal … Continue reading →

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

HiRISE: Patches of snow

Posted on May 30, 2018 by rburnham

The North Pole of Mars is surrounded by a vast sea of sand dunes. In this dune field, the dunes are covered by a seasonal cap of dry ice in the winter. In early Martian summer, at the time we … Continue reading →

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

THEMIS: Dunes and glacial deposits in Moreux Crater

Posted on May 30, 2018 by rburnham

THEMIS Image of the Day, May 30, 2018. Moreux Crater is located in the northern part of Terra Sabaea. The crater has a region of sand dunes on the crater floor, as well as features that are similar to glacial … Continue reading →

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

THEMIS: Frost-free dunes in the north polar sand sea

Posted on May 25, 2018 by rburnham

THEMIS Image of the Day, May 25, 2018. This VIS image shows part of Olympia Undae, a large dune field that surrounds part of the north polar cap. At the top of the image the dunes are small and isolated. … Continue reading →

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

THEMIS: Polar dunes and layers of ice and dust

Posted on May 24, 2018 by rburnham

THEMIS Image of the Day, May 24, 2018. This VIS image shows the margin between the polar cap and the surrounding plains. There are dunes on the plains at the top of the image. In the upper left corner it … Continue reading →

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

HiRISE: Dunes in Nectaris Montes

Posted on May 17, 2018 by rburnham

Sand dunes in Valles Marineris can be impressive in size, with steep slopes that seem to climb and descend. An enhanced-color cutout shows some of these on the slopes of Nectaris Montes within Coprates Chasma. The brighter bedforms are inactive … Continue reading →

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

HiRISE: Barchan Pac-Man

Posted on May 16, 2018 by rburnham

Barchan sand dunes are common on Mars and often form vast dune fields within very large (tens to hundreds of kilometers) impact basins. The regions upwind of barchans are usually devoid of sandy bedforms, so if you were walking in … Continue reading →

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

THEMIS: Basaltic sand dunes in Arabia Terra crater

Posted on May 3, 2018 by rburnham

THEMIS Image of the Day, May 3, 2018. A group of dunes is visible on the floor of this unnamed crater in Arabia Terra. The dunes contain basaltic sand, which is darker than the dust covered materials of the rest … Continue reading →

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

THEMIS: Juventae Chasma’s rubble collection

Posted on May 1, 2018 by rburnham

THEMIS Image of the Day, May 1, 2018. This VIS image runs from northern Juventae Chasma to just short of the southern canyon wall. Illustrating the variety of landforms within the chasma, this image contains the rough canyon floor at … Continue reading →

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