Viscous Overstability · Self-Corrugating Rings
unseel.com · Saturn's dense rings · axisymmetric density waves
Wavelength — m
Optical depth τ
Phase
Icy ring particles
Density crest (over-dense)
Trough (under-dense)
Occultation starlight
Unseel.com · Ring Viscous Overstability: Why Dense Ringlets Spontaneously Corrugate