Sedimentation Analysis (Shear Stress)

This tutorial will use SEAT to evaluate the impact of WEC devices.

Input

At this point you should have setup the input files and style files as detailed in Prepare Tutorial Files.

To run this demonstration, use the Load GUI Inputs button located at the bottom left of the SEAT GUI, navigate to DEMO/pacwave/shear_stress_module.ini, and click OK to load the inputs. If you need detailed instructions on how to load inputs, please refer to the Save & Load Configuration section in the SEAT QGIS Plugin documention.

Note

Your paths will differ than the ones shown in the example below. If you get an error double check the paths making sure the files exist at the specified location.

Output

The above example case evaluates the impact on sediment mobility considering a single median grain size receptor in a CSV file. The probability-weighted shear stress with devices is compared to the scenario without devices. The resulting stressor (change in shear stress), stressor with receptor (change in sediment mobility), and the reclassified stressor from the analysis are illustrated below.

Some example output layers are shwown in the Figure below. To add the map layer see the Quick Map Services section.

Layers Legend	Sediment Risk Layer
Sediment Mobitility Difference	Shear Stress Difference

Output Files

Additional output files can be found in the specifed Output folder.

Output
└───Shear_Stress_Module
   └───Shear Stress Module
            sediment_grain_size.tif
            sediment_mobility_classified.csv
            sediment_mobility_classified.tif
            sediment_mobility_classified_at_sediment_grain_size.csv
            sediment_mobility_difference.csv
            sediment_mobility_difference.tif
            sediment_mobility_difference_at_sediment_grain_size.csv
            sediment_mobility_difference_at_shear_stress_risk_layer.csv
            sediment_mobility_without_devices.tif
            sediment_mobility_with_devices.tif
            shear_stress_difference.csv
            shear_stress_difference.tif
            shear_stress_difference_at_secondary_constraint.csv
            shear_stress_difference_at_sediment_grain_size.csv
            shear_stress_risk_layer.tif
            shear_stress_risk_metric.csv
            shear_stress_risk_metric.tif
            shear_stress_risk_metric_at_sediment_grain_size.csv
            shear_stress_risk_metric_at_shear_stress_risk_layer.csv
            shear_stress_without_devices.tif
            shear_stress_with_devices.tif