PIA00319: Global Mercator Mosaic
Target Name: Io
Is a satellite of: Jupiter
Mission: Voyager
Spacecraft: Voyager 1
Product Size: 2468 x 1051 pixels (width x height)
Produced By: U.S. Geological Survey
Addition Date: 1998-06-04
Primary Data Set: Voyager EDRs
Full-Res TIFF: PIA00319.tif (8.191 MB)
Full-Res JPEG: PIA00319.jpg (209.7 kB)

Click on the image above to download a moderately sized image in JPEG format (possibly reduced in size from original)

Original Caption Released with Image:

Io's volcanic plains are shown in this Voyager 1 image mosaic which covers the area roughly from latitude 60 degrees N. to latitude 60 degrees S. and longitude 100-345. North is up. Numerous volcanic calderas, lava flows, and volcanic eruption plumes are visible here. The composition of Io's volcanic plains and lava flows has not been determined, but they could consist dominantly of sulfur with surface frosts of sulfur dioxide or of silicates (such as basalt) encrusted with sulfur and sulfur dioxide condensates. The bright whitish patches probably consist of freshly deposited sulfur dioxide frost.

Image Credit:
NASA/JPL/USGS

Image Addition Date:
1998-06-04