Export SEGY files

Set up the workflow

1. Go in Data Panels -> Flows

2. Select the input data directory containing raw data (cf Download data), and the output data directory in which you want to save your SEGY files (usually Documents/Data/your_survey/segy).

3. Select Domain Source

4. Select Start Time and End Time (usually a day before the start a of the survey, and a day after the end).

5. Select VIBRO in Shot Process Name.

6. In Workers (bottom left menu), select Process Type Read Dat, then adjust output parameters (bottom right menu). All boxes should be checked except use relational template.

7. Sample interval should match the one defined in the nodes (250 µs by default).

8. Shift time by -5000 µs to add a pre-trigger delay.

9. Save the flow (top left). Default name is DefaultFlow.

Export SEGY files

1. Go to Data Panels -> Manager and Create NuTask

2. Select Flow Work in NuTask Type list, then FlowName (cf step 9 above) and check All Source box.

3. Click on Show Job Count at the bottom of the page. It should now display the correct number of sources.

   Node

   If multiple sources are located at the same location, it will show the number of position instead of the number of shots. Yet, it should still create the correct number of segy files.

4. Press OK to start creating the files.

5. Your files will be stored in Documents/Data/your_survey/segy/FlowName/Read Dat