Tag Archives: dark slope streaks

HiRISE: Bang and whoosh!

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

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

THEMIS: Dark slope streaks in rugged terrain

THEMIS Image of the Day, May 31, 2018. This VIS image shows part of the ‘rim’ of Orcus Patera. How Orcus Patera formed is a mystery. Along the east facing ridge walls in this image multiple regions of dark slope … Continue reading

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

THEMIS: Wind, dust, and gravity in Medusae Fossae

THEMIS Image of the Day, April 10, 2018. This VIS image is located in Medusae Fossae. Along the cliffside several dark streaks are visible. It is thought that these streaks mark the location where downslope movement of material has removed … Continue reading

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

THEMIS: Spiny ridges of Lycus Sulci

THEMIS Image of the Day, March 29, 2018. Lycus Sulci is a very complex region surrounding the northern and western flanks of Olympus Mons. This VIS image shows several features found in Lycus Sulci including tectonic derived ridges with dark … Continue reading

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

HiRISE: Supremely sublime sliding sand sheets

Supremely sublime sliding sand sheets. East Melas Chasma. Beautiful Mars series.

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

HiRISE: A nice gathering of slope streaks

A nice gathering of slope streaks. Beautiful Mars series.

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

HiRISE: Splitting slope streaks

Streaks form on slopes when dust cascades downhill. The dark streak is an area of less dust compared to the brighter and reddish surroundings. What triggers these avalanches is not known, but might be related to sudden warming of the … Continue reading

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

HiRISE: Dark slope streaks in Olympus Mons aureole deposits

Wisps on another world. Beautiful Mars series.

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

HiRISE: Dark slope streaks in Labeatis Fossae

Never the twain shall meet. Beautiful Mars series.

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

THEMIS: Dust avalanches in Terra Sabaea

THEMIS Image of the Day, July 21, 2017. This VIS image shows several dark slope streaks on the inner rim of an unnamed crater in Terra Sabaea. These features are thought to be formed by dust avalanches — downslope movement … Continue reading

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