IO ~ Moon of Jupiter



Io
Date: 19 Sep 1997


This global view of Jupiter's moon, Io, was obtained during the tenth orbit of Jupiter by NASA's Galileo spacecraft on 19 September 1997 at a range of more than 500,000 km (310,000 miles). Io (which is slightly larger than Earth's moon) is the most volcanically active body in the solar system.

In this enhanced color composite, deposits of sulfur dioxide frost appear in white and grey hues while yellowish and brownish hues are probably due to other sulfurous materials. Bright red materials, such as the prominent ring surrounding Pele, and "black" spots with low brightness mark areas of recent volcanic activity and are usually associated with high temperatures and surface changes.

One of the most dramatic changes on Io is the appearance of a new dark spot (upper right edge of Pele), 400 km (250 miles) in diameter, which surrounds a volcanic center named Pillan Patera. The dark spot did not exist in images obtained 5 months earlier, but Galileo imaged a 120 km (75 mile) high plume erupting from this location during its ninth orbit.

Credit: NASA/JPL/University of Arizona

IO Volcano Locator Map


Credit: Created 30 April 2008
by Steve Kadel and the Planetary Geology Group
School of Earth and Space Exploration (SESE)
Arizona State University

Click here to visit source page ~ Volcanos on Io


IO Available Lot Map


MAP KEY USED FOR LOT MAPS

Sectors 01 to 05 (this page) Sectors 06 to 10 Sectors 11 to 15


IO Regions Available Lot Map

SECTOR 01
PARCEL: SOL05A-01-0101-000000-W-GRID



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IO RegionsAvailable Lot Map

SECTOR 02
PARCEL: SOL05A-02-0101-000000-W-GRID



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IO Regions Available Lot Map

SECTOR 03
PARCEL: SOL05A-03-0101-000000-W-GRID



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IO Regions Available Lot Map

SECTOR 04
PARCEL: SOL05A-04-0101-000000-W-GRID



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IO Regions Available Lot Map

SECTOR 05
PARCEL: OL05A-05-0101-000000-W-GRID



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Region History


Tvashtar Catena, Io
Tvashtar Catena, Io
Date: 22 Feb 2000

An active volcanic eruption on Jupiter's moon Io was captured in this image taken by NASA's Galileo spacecraft. Tvashtar Catena, a chain of giant volcanic calderas centered at 60 degrees north, 120 degrees west, was the location of an energetic eruption caught in action in November 1999. A dark, "L"-shaped lava flow to the left of the center in this more recent image marks the location of the November eruption. White and orange areas on the left side of the picture show newly erupted hot lava, seen in this false color image because of infrared emission. The two small bright spots are sites where molten rock is exposed to the surface at the toes of lava flows. The larger orange and yellow ribbon is a cooling lava flow that is more than more than 60 kilometers (37 miles) long. Dark, diffuse deposits surrounding the active lava flows were not there during the November 1999 flyby of Io.

This color mosaic was created by combining images taken in the near-infrared, clear, and violet filters from Galileo's camera. The range of wavelengths is slightly more than that of the human eye. The mosaic has been processed to enhance subtle color variations. The bright orange, yellow, and white areas at the left of the mosaic use images in two more infrared filters to show temperature variations, orange being the coolest and white the hottest material. This picture is about 250 kilometers (about 155 miles) across. North is toward the top and illumination from the Sun is from the west (left).

Credit: NASA Planetary Photojournal ~ PIA2550


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