When
2 p.m., Jan. 15, 2016
Where
Kuiper Space Sciences 312
Dr. Terry A. Hurford
Planetary Scientist
NASA Goddard Space Flight Center
Candidate for faculty position, Earth Dynamics Observatory (comparative planetology)
Time and Tide Stop for No One: Applications of Tidal Dynamics throughout the Solar System
All planets and satellites in the Solar System experience some degree of tidal deformation. These deformations are enhanced on icy satellites, which orbit large gas giant planets, and that possess subsurface liquid oceans. Tidal deformation produces stresses on the surface that are recorded in the geological record. These stresses can also control volcanism on active satellites.
On Enceladus, tides are the source of heat for volcanic eruptions. And tidal stress controls the timing and location of eruptions from surface fractures in the south polar region. Linking observed variations in volcanic activity to tidal stress provide information about the volatile reservoirs supplying the erupting material. Tidal stresses also imply that eruptive material is linked to a subsurface ocean.
With Enceladus as the prime example of a tidally volcanic satellite, other potential active icy bodies can be examined. Europa and Triton are ocean worlds that may exhibit similar activity.
Planetary Scientist
NASA Goddard Space Flight Center
Candidate for faculty position, Earth Dynamics Observatory (comparative planetology)
Time and Tide Stop for No One: Applications of Tidal Dynamics throughout the Solar System
All planets and satellites in the Solar System experience some degree of tidal deformation. These deformations are enhanced on icy satellites, which orbit large gas giant planets, and that possess subsurface liquid oceans. Tidal deformation produces stresses on the surface that are recorded in the geological record. These stresses can also control volcanism on active satellites.
On Enceladus, tides are the source of heat for volcanic eruptions. And tidal stress controls the timing and location of eruptions from surface fractures in the south polar region. Linking observed variations in volcanic activity to tidal stress provide information about the volatile reservoirs supplying the erupting material. Tidal stresses also imply that eruptive material is linked to a subsurface ocean.
With Enceladus as the prime example of a tidally volcanic satellite, other potential active icy bodies can be examined. Europa and Triton are ocean worlds that may exhibit similar activity.
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