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Mapping Volcanic Heat on Io

By Guest PostJune 11, 2012Scienceashley davies, bear fight institute, david williams, dennis matson, earth, erupting volcanoes, europa, floored volcanic craters, galileo mission, glenn veeder, heat flow, hot spots, io, jani radebaugh, journal icarus, jovian moon, life beyond earth, logarithmic scale, map, NASA, paterae, pattern of heat, thermal emission, torrence johnson, volcanic thermal emission, volcanoes

A new study finds that the pattern of heat coming from volcanoes on Io’s surface disposes of the generally-accepted model of internal heating. The heat pouring out of Io’s hundreds of erupting volcanoes indicates a complex, multi-layer source. These results come from data collected by NASA spacecraft and ground-based telescopes and appear in the June issue of the journal Icarus.

A map of hot spots, classified by the amount of heat being emitted, shows the global distribution and wide range of volcanic activity on Io. Most of Io’s eruptions dwarf their contemporaries on Earth. (more…)

Where the Earth’s Heat Comes From

Berkeley Lab scientists join their KamLAND colleagues to measure the radioactive sources of Earth’s heat flow

What spreads the sea floors and moves the continents? What melts iron in the outer core and enables the Earth’s magnetic field? Heat. Geologists have used temperature measurements from more than 20,000 boreholes around the world to estimate that some 44 terawatts (44 trillion watts) of heat continually flow from Earth’s interior into space. Where does it come from? (more…)

Tag Archives: heat flow

Mapping Volcanic Heat on Io

Where the Earth’s Heat Comes From