  We report on the observation of gravity-capillary wave turbulence on the
surface of a fluid in a high-gravity environment. By using a large-diameter
centrifuge, the effective gravity acceleration is tuned up to 20 times the
Earth gravity. The transition frequency between the gravity and capillary
regimes is thus increased up to one decade as predicted theoretically. A
frequency power-law wave spectrum is observed in each regime and is found to be
independent of the gravity level and of the wave steepness. While the timescale
separation required by weak turbulence is well verified experimentally
regardless of the gravity level, the nonlinear and dissipation timescales are
found to be independent of the scale, as a result of the finite size effects of
the system (large-scale container modes) that are not taken currently into
account theoretically.
