Ashley G. Davies

Jet Propulsion Laboratory
California Institute of Technology

CIPS SEMINAR
WEDNESDAY, 10 OCTOBER 2001
4PM
544 CAMPBELL HALL

"Volcanism on Io: Quantifying Eruption Parameters From Galileo Data"

Heated by gravitational forces, Io is the only body in the Solar System where extraterrestrial, high-temperature silicate volcanism has been observed. Since 1996, the Galileo spacecraft has been periodically observing volcanism on Io at both visible and infrared wavelengths. Ashley Davies, of the Galileo Near Infrared Mapping Spectrometer Team, will discuss how these data are being analysed in order to constrain the eruption temperature (and therefore composition) of ionian magmas, chart the temporal evolution of individual eruptions, determine the different styles of eruptions observed, and constrain other important eruption parameters, such as mass eruption and areal coverage rates. Having quantified these parameters, the styles of volcanic activity on Io and Earth can be compared.