Mars - Mars Global Surveyor

Lava Flows on Ascraeus Mons, Mars

This image was taken near the summit of the giant Tharsis shield volcano Ascraeus Mons. The crater at right is about 600 m in diameter and appears to be an impact crater. A sinuous rille, a channel formed by subsurface lava flows, runs across the top of the image. The rough surface at the bottom of the image may have been formed by an aa lava flow, while the upper part of the image represents smoother pahoehoe lava. The image is centered at 11.5 N, 103.5 W. (Mars Global Surveyor, MRPS88921)
Larger image: 316K

High resolution tiff file (630K)

Location & Time Information
Date/Time (UT): 1998-04-28 T 04:23:02
Distance/Range (km): 1088.41
Central Latitude/Longitude (deg): 11.5, 103.5 W
Orbit(s): 267

Imaging Information
Area or Feature Type: crater, lava flow, volcano
Instrument: Mars Orbiter Camera (MOC)
Instrument Resolution (pixels): 2048 line array, 8-bit
Instrument Field of View (deg): 0.4
Filter: N/A
Illumination Incidence Angle (deg): 50.17
Phase Angle (deg): 52.03
Instrument Look Direction: N/A
Surface Emission Angle (deg): 3.72

Ordering Information
CD-ROM Volume: MGSC_0005
NASA Image ID number: MRPS88921
Other Image ID number:
NSSDC Data Set ID (Photo): XD-12A
NSSDC Data Set ID (CD): 96-062A-01A (raw images)
Other ID: P-49921


[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