Data Catalog Export

Data here was collected at the River Dynamics Laboratory at Arizona State University.  Measurements of particle motions were obtained using a manual tracking method within the program ImageJ.  The data include 1250 frames or 5 seconds of high-speed imagery, associated coordinates of particle motions, and derived measurements of particle motions (e.g. instantaneous velocities, particle accelerations, hop distances, and travel times).  

We conducted experiments to examine how steadiness-unsteadiness of source parameters is reflected in density currents in air. We ran experiments with other wise steady supply broken by two intervals (e.g. 30-10-30-10-30, or 30-5-30-5-30, where currents were supplied for 3 intervals of 30 s separated by 10 or 5 second pauses). 

Experiments were monitored using orthgonal laser sheets, with video data recorded in the streamwise vertical and horizontal planes; data have been orthorectified and processed for turbulent timescales and Feature-tracking-velocimetry velocity fields. Temeprature data were recorded at 3 Hz using 0.001" K-type thermocouples. 

Please contact Ben Andrews for access to data: andrewsb@si.edu  

The data have been measured during mixed bedrock-alluvial experiments at the Hydraulic Laboratory of the University of South Carolina (Oct 15-May 16). The data include water surface elevation, Grain size distribution of the bed surface and parent material, bed surface elevation and some videos showing the alluvial-bedrock transitions and Paralaminations. There is also a powerpoint file which explains all the data in details. 

Data collected and processed by H. Ismail et al during density current confluence experiments at the University of South Carolina Hydraulics Lab (2013-2015). In all files, x, y, and z denote down-stream, cross-channel, and vertical coordinates, respectively. The origin is the upstream junction point on the flume bed. u and v denote velocity in the x and y directions, respectively. U and H are depth-averaged velocity and current thickness, respectively.

"vertical-profiles-u.xlsx" contains down-stream (u) velocity versus distance from the bed at 9 locations along the main channel centerline.
"horizontal-u.xlsx" and "horizontal-v.xlsx" contain measurements of down-stream (u) and cross-channel (v) data at 3000 data points located on five horizontal planes in the vicinity of the junction in the main channel.
"layer-averaged.xlsx" contains computed depth-averaged velocity and current thickness for each profile defined by the data in "vertical-profiles-u.xlsx".