Fig. 2: The evolution of globally averaged tidal parameters during the Cryogenian.
Globally averaged M2 amplitudes (a) and integrated dissipation rates (b) throughout the period under consideration. The black solid line is the result from the set of simulations with conversion and no sea level change during interglacial periods (red dots), and a 500 m lowstand, no conversion, and increased bed friction during the glacial periods (blue dots). The x-symbols mark sensitivity simulations at the onset and end of glacial periods, in which non-glacial conditions were used, and the plus signs (+) mark simulations during interglacial periods without tidal conversion. The blue dashed line with circle markers shows the results for the Slushball with an ice-free band within 10o from the equator. The horizontal black dotted lines mark present day values and the blue shaded areas mark the spans of the two glaciations.
