31 July 2005
This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows a rare patch of dark sand dunes in the Nilosyrtis Mensae region of Mars. The steepest slopes on these dunes, their slipfaces, point toward the south-southwest, indicating that the dominant winds that formed them came from the north-northeast (top/upper right).
Location near
: 34.5°N, 295.1°W
Image width
: width: ~3 km (~1.9 mi)
Illumination from
: lower left
Season
: Northern Autumn
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 | Dune, Grayscale | |
Acquisition Date | ||
Release Date | 2005-07-31 | |
Date in Caption | 2005-07-31 | |
Image Credit | NASA/JPL/Malin Space Science Systems | |
Source | photojournal.jpl.nasa.gov/catalog/PIA04129 | |
Identifier | PIA04129 |