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Titan's rotation reveals an internal ocean and changing zonal winds

Science

By:
, , , , , , , , and
DOI: 10.1126/science.1151639

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Abstract

Cassini radar observations of Saturn's moon Titan over several years show that its rotational period is changing and is different from its orbital period. The present-day rotation period difference from synchronous spin leads to a shift of ???0.36?? per year in apparent longitude and is consistent with seasonal exchange of angular momentum between the surface and Titan's dense superrotating atmosphere, but only if Titan's crust is decoupled from the core by an internal water ocean like that on Europa.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Titan's rotation reveals an internal ocean and changing zonal winds
Series title:
Science
DOI:
10.1126/science.1151639
Volume
319
Issue:
5870
Year Published:
2008
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Science
First page:
1649
Last page:
1651
Number of Pages:
3