Figure 13-5: R I V U X G
Volcanic Plumes on Io (a) Io’s volcanic eruptions were first discovered on this Voyager 1 image. The plume at upper left, which extends 260 km (150 mi) above Io’s surface, came from the volcano Pele. (b) This Galileo image shows plumes from the volcanoes Prometheus and Zamama. The plumes rise to about 100 km (60 mi) above Io’s surface and are about 250 km (150 mi) wide. (c) At the top of this New Horizons image, the plume from the volcano Tvashtar reaches 290 km high. Another plume is visible at the far left edge. The mountains near the center, just to the left of the terminator (the line between day and night) are about as tall as Mount Everest.
Volcanic Plumes on Io (a) Io’s volcanic eruptions were first discovered on this Voyager 1 image. The plume at upper left, which extends 260 km (150 mi) above Io’s surface, came from the volcano Pele. (b) This Galileo image shows plumes from the volcanoes Prometheus and Zamama. The plumes rise to about 100 km (60 mi) above Io’s surface and are about 250 km (150 mi) wide. (c) At the top of this New Horizons image, the plume from the volcano Tvashtar reaches 290 km high. Another plume is visible at the far left edge. The mountains near the center, just to the left of the terminator (the line between day and night) are about as tall as Mount Everest.
(a: NASA; b: Planetary Image Research Laboratory/University of Arizona/JPL/NASA; c: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute)