Analysis of superelevation and debris flow velocities at Illgraben, Switzerland

The forced vortex equation, based on the cross-stream inclination of a flow surface as it passes through bend, is common approach to estimating debris velocities. Here, we present preliminary results study superelevation and correction factor k , used adapt equation flows, data from Illgraben torrent in Switzerland. definition radius curvature, calculation velocities, not found exercise large influence calculated velocities when using high resolution aerial images, with choice cross-section location -factor exercising more significant influence. -factors here fall within range previously reported literature, ranging approximately 1 7, suggested non-linear relationship Froude numbers evident dataset. Following season 2022, will be continued additional events investigative methods extended include high-resolution LiDAR sensors installed along torrent.