The SZ random walk particle tracking module is very useful for finding out the source of water to an area of interest, for example a well field or a wetland. A property of each particle is its starting location. If the particle is removed from the model or enters a specified area, then the particle is tagged, or ‘registered’. At the end of the simulation, you can then sift through all of the particles and find the starting location for all the ones that you want. With this information, you can build up a dyanamic picture of the source of water entering an area or leaving the model through a specific boundary. The extraction itself will compile a point shape file with the starting locations of all the particles satisfying the specified criteria.
In the top level of this data tree item, you can specify any number of different particle extractions. These will be saved from simulation to simulation, allowing you to re-run the extraction for different scenarios.
The buttons at the bottom, allow you to run the selected extraction or all of the specfied extractions.
