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Kupaianah Lava Lake, Hawaii
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| Name | Type | Width x Height | Size |
|---|---|---|---|
| lavalake.gif | GIF | 633 x 411 | 221K |
| lavalake.tif | TIFF | 2000 x 1300 | 7M |
Using a spectroradiometer, scientists were able to measure the radiative temperature and thermal output from the Kupaianaha Lava Lake. This instrument collects spectra from 0.4-3.0 micrometers in over 800 channels, thereby permitting an accurate determination of the blackbody temperature of the surface. Such studies are of value because they show that the surface of a lava lake (or a lava flow) is remarkably cool - perhaps only a few hundred degrees centigrade - compared to the eruptive temperature of approximately 1,150°C (2,102°F). Such temperatures are quite similar to those the Voyager 1 spacecraft measured for the volcanic activity on Io, suggesting that silicate lavas, as opposed to molten sulfer, could exist within lava lakes on Io.