PIA06699: Light and Dark Slope Streaks


Light and Dark Slope Streaks

Caption:

21 July 2004
Dark slope streaks are a common feature on slopes thickly-mantled by dust, especially in the Tharsis, Arabia, and western Amazonis regions of Mars. Less common are light-toned slope streaks, which often occur in the same area as dark streaks. They are most common in Arabia Terra, and some are shown in this Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image. Slope streaks are probably the result of sudden avalanches of extremely dry dust. The behavior of the avalanching dust is somewhat fluid-like, and new streaks have been observed to form over intervals of a few months to a Mars year. This image is located near 13.4°N, 340.3°W, and covers an area about 3 km (1.9 mi) wide. Sunlight illuminates the scene from the lower left.

Cataloging Keywords:

Name Value Additional Values
Target Mars
System
Target Type Planet
Mission Mars Global Surveyor (MGS)
Instrument Host Mars Global Surveyor
Host Type Orbiter
Instrument Mars Orbiter Camera (MOC)
Detector
Extra Keywords Dust, Grayscale
Acquisition Date
Release Date 2004-07-21
Date in Caption 2004-07-21
Image Credit NASA/JPL/Malin Space Science Systems
Source photojournal.jpl.nasa.gov/catalog/PIA06699
Identifier PIA06699