High-temperature hot spots on Io as seen by the Galileo solid state imaging (SSI) experiment
Links
- More information: Publisher Index Page (via DOI)
- Download citation as: RIS | Dublin Core
Abstract
High-temperature hot spots on Io have been imaged at ∼50 km spatial resolution by Galileo's CCD imaging system (SSI). Images were acquired during eclipses (Io in Jupiter's shadow) via the SSI clear filter (∼0.4–1.0 µm), detecting emissions from both small intense hot spots and diffuse extended glows associated with Io‧s atmosphere and plumes. A total of 13 hot spots have been detected over ∼70% of Io–s surface. Each hot spot falls precisely on a low-albedo feature corresponding to a caldera floor and/or lava flow. The hot-spot temperatures must exceed ∼700 K for detection by SSI. Observations at wavelengths longer than those available to SSI require that most of these hot spots actually have significantly higher temperatures (∼1000 K or higher) and cover small areas. The high-temperature hot spots probably mark the locations of active silicate volcanism, supporting suggestions that the eruption and near-surface movement of silicate magma drives the heat flow and volcanic activity of Io.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | High-temperature hot spots on Io as seen by the Galileo solid state imaging (SSI) experiment |
| Series title | Geophysical Research Letters |
| DOI | 10.1029/97GL01956 |
| Volume | 24 |
| Issue | 20 |
| Year Published | 1997 |
| Language | English |
| Publisher | American Geophysical Union |
| Description | 4 p. |
| First page | 2443 |
| Last page | 2446 |
| Google Analytic Metrics | Metrics page |