Titan’s Rotation Reveals an Internal Ocean and Changing Zonal Winds

Details Titan’s Rotation Reveals an Internal Ocean and Changing Zonal Winds Titan’s Rotation Reveals an Internal Ocean and Changing Zonal Winds

Mar 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008sci...319.1649l&link_type=abstract

Science, Volume 319, Issue 5870, pp. 1649- (2008).

Physics

66

Scientific paper

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.

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