Loki, Io: New ground‐based observations and a model describing the change from periodic overturn

  title={Loki, Io: New ground‐based observations and a model describing the change from periodic overturn},
  author={Julie A. Rathbun and John R. Spencer},
  journal={Geophysical Research Letters},
Loki Patera is the most powerful volcano in the solar system. We have obtained measurements of Loki's 3.5 micron brightness from NASA's Infrared Telescope Facility (IRTF) and have witnessed a major change in eruptive behavior. While Loki brightened by a factor of several every 540 days prior to 2001, from 2001 through 2004 Loki remained at a constant, intermediate brightness. We have constructed a quantitative model of Loki as a basaltic lava lake whose solidified crust overturns when it… 
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