Io Volcanism Seen by New Horizons: A Major Eruption of the Tvashtar Volcano

Details Io Volcanism Seen by New Horizons: A Major Eruption of the Tvashtar Volcano Io Volcanism Seen by New Horizons: A Major Eruption of the Tvashtar Volcano

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007sci...318..240s&link_type=abstract

Science, Volume 318, Issue 5848, pp. 240- (2007).

Computer Science

25

Scientific paper

Jupiter’s moon Io is known to host active volcanoes. In February and March 2007, the New Horizons spacecraft obtained a global snapshot of Io’s volcanism. A 350-kilometer-high volcanic plume was seen to emanate from the Tvashtar volcano (62°N, 122°W), and its motion was observed. The plume’s morphology and dynamics support nonballistic models of large Io plumes and also suggest that most visible plume particles condensed within the plume rather than being ejected from the source. In images taken in Jupiter eclipse, nonthermal visible-wavelength emission was seen from individual volcanoes near Io’s sub-Jupiter and anti-Jupiter points. Near-infrared emission from the brightest volcanoes indicates minimum magma temperatures in the 1150- to 1335-kelvin range, consistent with basaltic composition.

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