Mars - Viking 1 Orbiter

Mars northern lowland fractured terrain

Viking 1 Orbiter image showing patterned ground in the northern lowland plains of Mars. The individual polygons bounded by the fractures can be up to 20 km across, much larger than the 100 m sizes found in the nearest terrestrial analogue, ice wedging in periglacial regions. The image is 85 km across and north is at ~1:30. (Viking Orbiter 32A18)
Larger image: 417K

High resolution tiff file (1.0M)

Location & Time Information
Date/Time (UT): 1976-07-22 T 13:23:15
Distance/Range (km): 1952.5
Central Latitude/Longitude (deg): +43.94,018.66
Orbit(s): 32

Imaging Information
Area or Feature Type: Plains, Fractured Terrain
Instrument: Visual Imaging Subsystem - Camera A
Instrument Resolution (pixels): 1056 x 1182, 7 bit
Instrument Field of View (deg): 1.54 x 1.69
Filter: Clear (4)
Illumination Incidence Angle (deg): 72.02
Phase Angle (deg): 58.19
Instrument Look Direction: N/A
Surface Emission Angle (deg): 46.85

Ordering Information
CD-ROM Volume: VO_1010
NASA Image ID number: 032A18
Other Image ID number: 26528554
NSSDC Data Set ID (Photo): 75-075A-01B
NSSDC Data Set ID (CD): 75-075A-01c
Other ID: N/A


[NASA Logo] Authors/Curators:

Dave Williams,, (301) 286-1258
Code 690.1, NASA Goddard Space Flight Center
Greenbelt, MD 20771, USA

Jay Friedlander,, (301) 286-7172
Code 612.4, NASA Goddard Space Flight Center
Greenbelt, MD 20771, USA

NASA Official: Dr. David R. Williams,

Last updated: 24 September 2015