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Effects of bathymetric lidar errors on flow properties predicted with a multi-dimensional hydraulic model

Posted date: March 18, 2015
Publication Year: 
2014
Authors: McKean, James (Jim) A.; Tonina, D.; Bohn, C.; Wright, C. W.
Publication Series: 
Scientific Journal (JRNL)
Source: Journal of Geophysical Research: Earth Surface. 119(3): 644-664.

Abstract

New remote sensing technologies and improved computer performance now allow numerical flow modeling over large stream domains. However, there has been limited testing of whether channel topography can be remotely mapped with accuracy necessary for such modeling. We assessed the ability of the Experimental Advanced Airborne Research Lidar, to support a multi-dimensional fluid dynamics model of a small mountain stream. Random point elevation errors were introduced into the lidar point cloud, and predictions of water surface elevation, velocity, bed shear stress, and bed mobility were compared to those made without the point errors. We also compared flow model predictions using the lidar bathymetry with those made using a total station channel field survey. Lidar errors caused

Citation

McKean, J.; Tonina, D.; Bohn, C.; Wright, C. W. 2014. Effects of bathymetric lidar errors on flow properties predicted with a multi-dimensional hydraulic model. Journal of Geophysical Research: Earth Surface. 119(3): 644-664.