SeisComP is a powerful software package for seismological data acquisition, processing, and analysis. However, sometimes you might encounter an issue where SeisComP detects picks but no events appear in the catalog. This can be frustrating, but there are several steps you can take to troubleshoot and fix this issue.
1. Verify the SeisComP Configuration
Check global.cfg
The first step is to ensure your global.cfg configuration file is correctly set up. Pay close attention to parameters related to event detection and association. Here are some typical settings to verify:
- Picker Configuration:
picker.detecStream = ...- Event Detection Settings:
detector.triggerStations = ...
detector.minimumTriggerStations = ...- Associator Configuration:
associator.enable = trueCheck Module-Specific Configurations
Make sure the configurations for modules like scautopick, scanloc, and scautoloc are correctly set:
scautopick.cfg
scautopick.phaseName = P
scautopick.minThreshold = 3.0scanloc.cfg
scanloc.triggerSeconds = 10
scanloc.bindSeconds = 30scautoloc.cfg
scautoloc.associator.minimumPicksPerStation = 3
scautoloc.associator.minimumStationsPerEvent = 42. Ensure All Necessary Modules Are Running
Verify that the key SeisComP modules responsible for pick detection, association, and event creation are running. You can do this by starting the modules:
seiscomp start scautopick
seiscomp start scanloc
seiscomp start scautoloc3. Review Logs for Errors
Examine the log files for each module to identify any errors or warnings that might explain why events are not being created. Log files are typically found in the $SEISCOMP_ROOT/var/log directory.
Example:
less $SEISCOMP_ROOT/var/log/scautopick.log
less $SEISCOMP_ROOT/var/log/scanloc.log
less $SEISCOMP_ROOT/var/log/scautoloc.log4. Validate Network and Station Configuration
Ensure that all the seismic stations in your network are correctly configured and that their metadata is properly loaded into SeisComP. Use the seiscomp check command to validate the configuration:
seiscomp check5. Adjust Detection and Association Parameters
You may need to fine-tune the detection and association parameters to better suit your network and seismicity. For example, you might need to lower the thresholds or adjust the minimum number of stations required to form an event.
Example Adjustments:
- Lowering the minimum number of trigger stations:
detector.minimumTriggerStations = 3- Reducing the picker threshold:
scautopick.minThreshold = 2.56. Manually Review Picks
Use the Scolv tool to manually review picks and check if they are correctly detected and associated. This can help you identify any discrepancies or issues in the automated process.
Launch Scolv:
scolv7. Database Connection and Permissions
Ensure that SeisComP has the necessary permissions to write events to the database and that the database connection is configured correctly. Verify your database settings in global.cfg:
Example:
database.archive = mysql://user:password@host/database
database.events = mysql://user:password@host/databaseConclusion
By following these troubleshooting steps, you should be able to identify and fix the issue causing SeisComP to detect picks but not create events in the catalog. Proper configuration, module management, and parameter adjustments are key to ensuring that SeisComP operates effectively.
If you continue to experience issues, consider reaching out to SeisComP support or the user community for further assistance.
We hope you found this guide helpful. For more tips and guides on using SeisComP and other seismological tools, stay tuned to our blog. If you have any questions or need further assistance, feel free to reach out to our support team. Happy seismographing!
About QuakeLogic
QuakeLogic located in northern California is a leading provider of advanced seismic monitoring solutions, offering a range of products and services designed to enhance the accuracy and efficiency of seismic data acquisition and analysis. Our innovative technologies and expert support help organizations worldwide to better understand and mitigate the impacts of seismic events.
Contact Information
- Email: sales@quakelogic.net
- Phone: +1-916-899-0391
- WhatsApp: +1-650-353-8627
- Website: www.quakelogic.net
For more information about our products and services, please visit our website or contact our sale team. We are here to help you with all your seismic monitoring needs.
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