During almost all deployments, some bad data will be obtained. Occasional loss of bottom track, and bad current or concentration data, can have considerable impacts on estimates of discharge and solids flux.
Sediview incorporates on-screen editing facilities to overcome these problems:
Display the colour-contoured cross section of concentration or current data. Simply click on a bed marker where BT has been lost and move it to the correct depth (using backscatter data or adjacent good bed levels as a guide). Sediview will rewrite the data file with the correct bed levels and restore lost ensembles to the data set.
Display the colour-contoured cross section of current data. Identify the cells containing bad current data. Click on an adjacent good cell and drag the good data into the bad cell. Sediview will use the good current data for all current data outputs and for calculations of discharge and solids flux.
Fish, air bubbles and debris all result in anomalous backscatter that will yield erroneous concentration data. These data can be removed from the record and replaced with good data from adjacent cells - with a single mouse action. Alternatively, users can switch on the unique automatic fish filter.
All changes made using the editing facilities are permanently recorded in the Sediview work files. All changes can be reversed at the touch of a button and the original data will be restored.
The Sediview package provided by HR Wallingford includes: