Photochemistry of a Volcanically Driven Atmosphere on Io: Sulfur and Oxygen Species from a Pele-Type Eruption
✍ Scribed by Julianne I. Moses; Mikhail Yu. Zolotov; Bruce Fegley Jr.
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 369 KB
- Volume
- 156
- Category
- Article
- ISSN
- 0019-1035
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✦ Synopsis
To determine how active volcanism might affect the standard picture of sulfur dioxide photochemistry on Io, we have developed a one-dimensional atmospheric model in which a variety of sulfur-, oxygen-, sodium-, potassium-, and chlorine-bearing volatiles are volcanically outgassed at Io's surface and then evolve due to photolysis, chemical kinetics, and diffusion. Thermochemical equilibrium calculations in combination with recent observations of gases in the Pele plume are used to help constrain the composition and physical properties of the exsolved volcanic vapors. Both thermochemical equilibrium calculations (