These megaripples occurred for grain roughness Shields parameter values in the 0.5-1.4 range. The ratio of megaripple height to horizontal scale was 0.12-0.13.
Megaripple size correlates better with flow kinetic energy than with other flow variables.
The slopes of the onshore ripple face were 30-33 deg, close to the angle of repose, consistent with the avalanche mechanism of bedform migration. Stress-based bedload sediment transport models successfully relate the observed migration rates to the measured local waves and currents.