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Io Io, in Jupiter's shadow, photographed by the Galileo spacecraft on May 6, 1997. The relative brightnesses of Io's features are enhanced with added colour, red being the most intense, yellow-green moderate, and blue the faintest. Small red and yellow-green spots are probably lava flows or lakes, while the bright area extending from Io's left limb corresponds to the plume from the volcano Prometheus. The diffuse glow on the right limb also has plumelike characteristics. Volcanic plumes on IoSeen from a distance of about 600,000 km (373,000 miles), a number of volcanoes, lava flows, and sulfur dioxide frost plains are visible on Io's surface. This image shows the eruption of two volcanic plumes: Pillan Patera, on the satellite's limb (shown in detail in the upper inset), and Prometheus, near the terminator (shown in detail in the lower inset). Prometheus has been observed since 1979; Pillan Patera (named for the Araucanian god of thunder, fire, and volcanoes) erupted in mid-1997. The images were taken by the Galileo spacecraft on June 28, 1997. Figure 27: The development of aulacogens, plumes, and plume traces during the separation of two continents. Here, the process is shown in two stages. Figure 7: Hot-spot volcanoes may be formed by deep mantle plumes generated by slow convection currents.
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Io
Volcanoes on Jupiter's moon Io captured in the act of erupting by the Galileo orbiter...
Photo NASA/JPL/Caltech (NASA photo # PIA01081)
Io, in Jupiter's shadow, photographed by the Galileo spacecraft on May 6, 1997. The...
Photo NASA/JPL/University of Arizona
Volcanic plumes on IoSeen from a...
Photo NASA/JPL/Caltech (NASA photo # PIA00703)
Figure 27: The development of aulacogens, plumes, and plume traces during the separation...
Encyclopædia Britannica, Inc.
Figure 7: Hot-spot volcanoes may be formed by deep mantle plumes generated by slow...
Encyclopædia Britannica, Inc.