Loki, Io: New ground-based observations and a model describing
the change from periodic overturn Article first published
online: 6 SEP 2006 Copyright 2006 by the American Geophysical
Union. Geophysical Research Letters Volume 33, Issue 17,
September 2006 How to Cite 2006), Loki, Io: New ground-based
observations and a model describing the change from periodic
overturn, Geophys. Res. Lett., 33, L17201,
doi:10.1029/2006GL026844., and ( - Issue published online: 6 SEP
2006 - Article first published online: 6 SEP 2006 - Manuscript
Accepted: 24 JUN 2006 - Manuscript Revised: 17 JUN 2006 -
Manuscript Received: 5 JUN 2006  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