Engineering summary
scautopick automatically picks seismic phases from live data streams while scolv is the GUI analysts use to verify and refine events. Here is how the two SeisComP modules fit together.
In short: scolv and scautopick differ in who does the work: scautopick is SeisComP's automatic phase picker that scans continuous data streams and picks P and S arrivals in real time for modules like scanloc, while scolv is the graphical event locator seismologists use to review those picks, repick phases, relocate events, compute magnitudes and confirm the catalog. In practice scautopick runs first and scolv refines its output.
SeisComP is a powerful and widely-used software package for seismic data acquisition, processing, and analysis. Within SeisComP, various modules perform specific tasks to ensure accurate and efficient seismic monitoring. Two essential modules in this suite are scolv and scautopick. While both are crucial for seismic event detection and analysis, they serve different purposes. In this blog post, we’ll explore the differences between these two modules and their unique functionalities.
SCOLV (Seismic Event Locator)
Purpose
The scolv module is designed for the manual review, analysis, and location of seismic events. It provides a graphical user interface (GUI) that allows seismologists to interactively analyze seismic data, make precise adjustments to event parameters, and manually pick seismic phases.
Key Features
- Manual Event Review and Editing: Seismologists can manually pick seismic phases (P and S waves), refine event locations, and adjust other event parameters to ensure accuracy.
- Interactive Visualization: Offers visual tools to display seismic waveforms, travel-time curves, and station maps, making it easier to analyze data.
- Event Confirmation and Refinement: Used to review and confirm events detected by automatic processing modules like
scautopick, allowing for necessary adjustments. - Detailed Analysis: Provides tools for in-depth seismic analysis, including magnitude calculation and error estimation.
Usage Scenario
Scolv is typically used when a seismologist needs to manually verify and refine the details of a detected seismic event. It is essential for quality control and ensuring the accuracy of the seismic event catalog.
SCAUTOPICK (Automatic Phase Picker)
Purpose
The scautopick module is an automatic phase picker that processes continuous seismic data streams to detect and pick seismic phases. It is designed to operate without manual intervention, providing real-time phase picks for event detection and location.
Key Features
- Automatic Phase Picking: Automatically identifies and picks P and S wave arrivals from continuous seismic data, reducing the need for manual intervention.
- Real-Time Processing: Capable of processing data in real-time, making it suitable for early warning systems and rapid event detection.
- Integration with Other Modules: Works seamlessly with other SeisComP modules (like
scanlocfor automatic event location) to provide a comprehensive automated seismic monitoring solution. - Configurable Algorithms: Allows customization of picking algorithms and parameters to suit different seismic networks and conditions.
Usage Scenario
Scautopick is typically used in an automated seismic monitoring setup where continuous real-time data needs to be processed to detect and locate seismic events quickly. It significantly speeds up the detection process by minimizing the need for manual picks.
Summary of Differences
- Functionality:
Scolv: A GUI tool for manual review, analysis, and event location.Scautopick: An automated tool for real-time phase picking from continuous data streams.- User Interaction:
Scolv: Requires manual interaction and is used for detailed event analysis and quality control.Scautopick: Operates automatically with minimal human intervention.- Use Case:
Scolv: Used for refining and confirming events, providing detailed analysis tools for seismologists.Scautopick: Used for real-time automatic detection of seismic phases, facilitating rapid event detection and processing.- Output:
Scolv: Produces refined and verified seismic event parameters and locations.Scautopick: Generates automatic phase picks used by other modules for event detection and location.
Practical Workflow
In a typical SeisComP workflow, scautopick might first detect and pick phases from incoming seismic data. These automatic picks can then be reviewed and refined using scolv, ensuring the final event catalog is accurate and reliable.
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!
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QuakeLogic 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.
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Key Takeaways
- scautopick automatically picks P and S wave arrivals from continuous data with no human intervention, suited to early warning.
- scolv is a GUI for manual phase picking, event relocation, magnitude calculation and error estimation.
- scautopick feeds automatic picks to scanloc and other modules for automatic event location.
- scolv output is a refined, verified event catalog; scautopick output is raw phase picks.
- Typical workflow: scautopick detects and picks, then an analyst confirms and refines the event in scolv.
Frequently Asked Questions
scautopick is the automatic phase picker in SeisComP. It processes continuous seismic data streams in real time, detects P and S wave arrivals and publishes phase picks without manual intervention. Those picks are consumed by other modules such as scanloc for automatic event location, which makes scautopick the foundation of rapid detection and earthquake early warning workflows. Picking algorithms and parameters are configurable per network.
scolv is SeisComP's graphical event locator, used for manual review and quality control. A seismologist opens an event, inspects waveforms, travel-time curves and station maps, repicks P and S phases, refines the origin location, recalculates magnitude and reviews error estimates. Analysts use it to confirm or correct events detected automatically before they enter the final catalog.
They complement each other rather than compete. scautopick provides fast, unattended picks that enable real-time detection, which scolv cannot do because it requires an analyst. scolv provides verified, refined event parameters that scautopick cannot produce on its own. A production SeisComP system normally runs scautopick continuously and uses scolv for review, so both are needed for an accurate catalog.
For earthquake early warning the relevant module is scautopick, because it picks phases from continuous real-time data streams within seconds and hands them to automatic location modules such as scanloc. scolv is an interactive tool and is used after the fact to verify the automatically detected events and refine their locations and magnitudes for the catalog.
In a typical SeisComP workflow scautopick first detects and picks phases from incoming data, and automatic location modules build a preliminary origin. A seismologist then opens that event in scolv, reviews and adjusts the picks, relocates the event and recalculates magnitudes. The refined and confirmed parameters saved from scolv become the authoritative entry in the event catalog.
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Topic cluster
Related engineering knowledge areas
- Structural Health MonitoringMonitoring for bridges, buildings, dams, tunnels, industrial facilities, and resilient infrastructure.
- Earthquake Early WarningOn-site detection, alerting workflows, seismic switches, and critical infrastructure warning systems.
- Seismic SensorsSeismometers, accelerometers, geophones, sensor selection, calibration, and field deployment.
- Infrasound MonitoringLow-frequency acoustic sensing for environmental noise, blast, UAV, volcano, and defense applications.
Definitions and references
Terms, standards, and source cues
- SHM: related to Structural Health Monitoring in this QuakeLogic knowledge cluster.
- damage detection: related to Structural Health Monitoring in this QuakeLogic knowledge cluster.
- earthquake early warning: related to Earthquake Early Warning in this QuakeLogic knowledge cluster.
- seismic switch: related to Earthquake Early Warning in this QuakeLogic knowledge cluster.
- seismometers: related to Seismic Sensors in this QuakeLogic knowledge cluster.
- accelerometers: related to Seismic Sensors in this QuakeLogic knowledge cluster.
- infrasound sensors: related to Infrasound Monitoring in this QuakeLogic knowledge cluster.
- low-frequency noise: related to Infrasound Monitoring in this QuakeLogic knowledge cluster.
Standards mentioned
- SeisComP documentation and configuration references
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