North Polar Cap Margin (natural color (top) and enhanced color (bottom))
Caption:
Water ice mixed with dust form the residual north polar ice cap (brown color). Seasonal frost of relatively pure ice (white color) partly blankets the polar deposits. A large trough, which is occupied by linear sand dunes (dark band), exposes polar layered deposits. The layered deposits hold a partial record of the history of atmospheric activity and climate of Mars. Center of picture is at latitude 82 degrees N., longitude 84 degrees W. Viking Orbiter Picture Numbers 82B11-12 (violet), 82B15-16 (green), and 82B17-18 (red) at 53 m/pixel resolution. Picture width is 106 km. North is 6 degrees counter-clockwise from top.
Cataloging Keywords:
Name |
Value |
Additional Values |
Target |
Mars |
|
System |
|
|
Target Type |
Planet |
|
Mission |
Viking |
|
Instrument Host |
Viking 2 Orbiter |
|
Host Type |
Orbiter |
|
Instrument |
Visual Imaging Subsystem - Camera A |
|
Detector |
|
|
Extra Keywords |
Atmosphere, Color, Dune, Dust, Water |
Acquisition Date |
|
Release Date |
1998-06-04 |
Date in Caption |
|
|
Image Credit |
NASA/JPL/USGS |
Source |
photojournal.jpl.nasa.gov/catalog/PIA00152 |
Identifier |
PIA00152 |