Rippled Dune
Caption:
10 October 2004
This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows ripples on the surface of a dune in a crater west of Sinus Meridiani near 2.5°N, 9.3°W. Most martian dune surfaces do not show ripples at the scale of MOC images---a higher resolution (better than 15 cm/pixel) view would be needed. These ripples are probably not typical sand ripples; they may be coarser-grained granule ripples (usually made up, in part, of grains 1-4 millimeters in size). The light-toned features in the image are wind-eroded outcrops of sedimentary rock. The image covers an area about 1.5 km (~0.9 mi) wide. Sunlight illuminates the scene from the upper 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 |
Crater, Dune, Grayscale |
Acquisition Date |
|
Release Date |
2004-10-10 |
Date in Caption |
2004-10-10 |
|
Image Credit |
NASA/JPL/Malin Space Science Systems |
Source |
photojournal.jpl.nasa.gov/catalog/PIA06930 |
Identifier |
PIA06930 |