SeisComP is a widely used software package for seismological data acquisition, processing, and analysis. One of its core features is the detection and cataloging of seismic events. In this guide, we will walk you through the steps to access and view detected events in SeisComP, and explain where the event catalog is stored.

Viewing Detected Events in SeisComP

Using the SeisComP GUI (Scolv)

The Scolv tool in SeisComP is a graphical user interface designed for reviewing and manually locating seismic events. Here’s how you can use it:

1. Launch Scolv:

• Open a terminal and type scolv to start the application.
• Alternatively, you can launch it from the SeisComP graphical interface if available.

1. Browse Events:

• Once Scolv is open, you can browse through the list of detected events.
• Click on an event to view detailed information such as magnitude, location, and origin time.

Using the Command Line Interface

SeisComP provides powerful command-line tools for querying and managing events. Here’s an example of how to list events using the command line:

Open Terminal:

• Open a terminal window.

Run Query:

• Use the seiscomp command to list events. For example:
  bash seiscomp exec scevtls -d mysql://user:password@host/database
• Replace the database connection string with your actual SeisComP database connection details.

Using the SeisComP Web Interface

If your SeisComP setup includes the web interface, you can access it via a web browser to view detected events:

Open Browser:

• Open your preferred web browser.

Navigate to SeisComP Web Interface:

• Enter the URL of your SeisComP web interface.
• Browse to the event list page where you can filter and view events.

Understanding the Event Catalog Location

The event catalog in SeisComP is typically stored in a database. The type and location of this database depend on your SeisComP configuration:

Database Configuration

SeisComP supports various database backends such as MySQL and PostgreSQL. The connection details are specified in the SeisComP configuration files, usually found in /etc/seiscomp3 or a similar directory.

Configuration File (global.cfg)

To find the database settings, open the global.cfg configuration file. Look for entries like these:

database.archive = mysql://user:password@host/database
database.events = mysql://user:password@host/database

These entries specify the connection details for the event catalog database.

Database Tables

Event information is stored in various tables within the database, including Event, Origin, Magnitude, and more.

Steps to Access the Event Catalog

Ensure SeisComP is Running

First, ensure that SeisComP services are running. You can start them using the following command:

seiscomp start

Accessing Scolv

To access Scolv, open a terminal and type:

scolv

Using the Command Line

To list events using the command line, run:

seiscomp exec scevtls -d mysql://user:password@host/database

Web Interface

Open your web browser and navigate to the SeisComP web interface URL, if configured.

Conclusion

By following these steps, you can easily view the events detected by SeisComP and understand where the event catalog is stored. Whether you prefer using the graphical interface, command line, or web interface, SeisComP provides flexible options to manage and review seismic event data.

Stay tuned for more tips and guides on using SeisComP and other seismological tools!

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We hope you found this guide helpful. 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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Thank you for choosing QuakeLogic. We look forward to assisting you with your seismic monitoring projects.

1. Formation Requirements

• File Articles of Incorporation:
• Form: Articles of Incorporation (Form ARTS-GS)
• Deadline: Upon creation
• Fee: $100
• Website: California Secretary of State
• Appoint a Registered Agent:
• Deadline: Upon creation
• Initial Statement of Information:
• Form: Statement of Information (Form SI-200)
• Deadline: Within 90 days of formation
• Fee: $25
• Website: California Secretary of State

2. Annual Requirements

• Annual Statement of Information:
• Form: Statement of Information (Form SI-200)
• Deadline: Annually by the end of the anniversary month of incorporation
• Fee: $25
• Website: California Secretary of State
• Franchise Tax:
• Form: California Form 100S
• Deadline: March 15th (for calendar year filers)
• Minimum Tax: $800 annually
• Website: California Franchise Tax Board
• California S-Corp Tax Return:
• Form: Form 100S (California S Corporation Franchise or Income Tax Return)
• Deadline: March 15th (for calendar year filers)
• Fee: Based on net income
• Website: California Franchise Tax Board

3. Quarterly and Bi-Annual Requirements

• Estimated Tax Payments:
• Form: Form 100-ES
• Deadline: April 15th, June 15th, September 15th, December 15th
• Fee: Based on estimated tax
• Website: California Franchise Tax Board

4. Federal Requirements

• S Corporation Election:
• Form: IRS Form 2553
• Deadline: No more than 2 months and 15 days after the beginning of the tax year the election is to take effect
• Website: IRS Form 2553
• Federal Tax Return:
• Form: IRS Form 1120S
• Deadline: March 15th (for calendar year filers)
• Fee: Based on net income
• Website: IRS Form 1120S
• Shareholder K-1s:
• Form: IRS Schedule K-1 (Form 1120S)
• Deadline: March 15th (to shareholders)
• Website: IRS Schedule K-1 (Form 1120S)

5. Employment Requirements

• California Employment Development Department (EDD):
• Form: DE 1 (Registration Form for Commercial Employers)
• Deadline: Within 15 days of employing first worker
• Website: California EDD
• Ongoing Reporting: DE 9 and DE 9C quarterly
• Website: California EDD Quarterly Reporting

6. Sales and Use Tax Requirements

• California Sales Tax Permit:
• Form: CDTFA-400-SP
• Deadline: Before commencing business
• Website: California Department of Tax and Fee Administration
• California Sales Tax Filings:
• Website: CDTFA Online Services

7. Government Contracting Requirements

• SAM Registration:
• Form: System for Award Management (SAM)
• Renewal: Annually
• Deadline: Based on the initial registration date
• Fee: Free
• Website: SAM Registration
• California e-Procure Registration:
• Form: Cal eProcure
• Renewal: Annually
• Deadline: Based on the initial registration date
• Fee: Free
• Website: California e-Procure

Comprehensive Schedule

Requirement	Form	Frequency	Deadline	Fee	Website
Articles of Incorporation	ARTS-GS	Once	Upon creation	$100	Link
Initial Statement of Information	SI-200	Once	Within 90 days of formation	$25	Link
Annual Statement of Information	SI-200	Annually	End of anniversary month	$25	Link
Franchise Tax	Form 100S	Annually	March 15th	Minimum $800	Link
California S-Corp Tax Return	Form 100S	Annually	March 15th	Based on net income	Link
Estimated Tax Payments	Form 100-ES	Quarterly	April 15th, June 15th, September 15th, December 15th	Based on estimated tax	Link
S Corporation Election	IRS Form 2553	Once	No more than 2 months and 15 days after the beginning of the tax year	–	Link
Federal Tax Return	IRS Form 1120S	Annually	March 15th	Based on net income	Link
Shareholder K-1s	IRS Schedule K-1 (1120S)	Annually	March 15th	–	Link
California EDD Registration	DE 1	Once	Within 15 days of employing first worker	–	Link
California EDD Quarterly Reports	DE 9 and DE 9C	Quarterly	Last day of the month following the end of the quarter	–	Link
California Sales Tax Permit	CDTFA-400-SP	Once	Before commencing business	–	Link
California Sales Tax Filings	Online (CDTFA)	Quarterly or Annually	Based on revenue and CDTFA schedule	–	Link
SAM Registration	SAM	Annually	Based on initial registration date	Free	Link
California e-Procure Registration	Cal eProcure	Annually	Based on initial registration date	Free	Link

Notes:

• Ensure to check for any changes in forms or deadlines as they can be updated by the respective authorities.
• Additional local permits and licenses might be required based on the specific business activities and location.

This information is brought to you by QuakeLogic. For sales contact us at sales@quakelogic.net

In the realm of structural engineering, ensuring safety and resilience in construction is of utmost importance. One of the most vital tools aiding engineers in this endeavor is the shake table. Shake tables are pivotal in the seismic testing of structures, providing invaluable data that helps engineers design buildings capable of withstanding earthquakes. This blog explores the intricacies of shake tables, their functions, their significance in structural engineering, and the differences between uniaxial and biaxial shake tables.

What is a Shake Table?

A shake table is a device used to simulate the ground motions produced by earthquakes. By replicating the oscillatory motion of seismic waves, shake tables enable engineers to observe how structures respond to these forces. This testing is essential for understanding the behavior of buildings and other structures during seismic events and for developing strategies to enhance their earthquake resistance.

Types of Shake Tables

1. Electrodynamic Shake Tables:
   These tables use electromagnets to generate motion. Known for their precision, they are often used for smaller-scale models and detailed studies.
2. Hydraulic Shake Tables:
   Driven by hydraulic actuators, these tables are suitable for larger structures and more significant displacement tests. They are highly effective in simulating a wide range of seismic activities.
3. Servo-Hydraulic Shake Tables:
   Combining the benefits of hydraulic systems with advanced control systems, these tables offer precise and powerful simulations. They are commonly used in both academic research and industrial applications.

Uniaxial vs. Biaxial Shake Tables

Uniaxial Shake Tables:

Uniaxial shake tables simulate ground motion along a single axis, typically either the X or Y axis. They are simpler and more cost-effective, making them ideal for basic testing and educational purposes. However, their limitation to one axis means they cannot fully replicate the complex, multidirectional nature of real earthquakes.

Biaxial Shake Tables:

Biaxial shake tables can simulate ground motion along two axes simultaneously, usually the X and Y axes. This capability provides a more comprehensive analysis of how structures will behave during seismic events. Biaxial tables offer a more realistic simulation of earthquake conditions, making them invaluable for advanced research and critical infrastructure testing.

The Role of Shake Tables in Structural Engineering

Seismic Testing

Shake tables allow engineers to subject structural models to realistic earthquake scenarios. By analyzing the performance of these models, engineers can identify potential weaknesses and improve design strategies. Seismic testing on shake tables provides critical data that informs building codes and construction practices, ensuring structures are built to withstand future earthquakes.

Research and Development

In research settings, shake tables are indispensable. They enable the exploration of new materials, innovative design concepts, and construction techniques. Universities and research institutions worldwide utilize shake tables to push the boundaries of structural engineering knowledge.

Performance Evaluation

Beyond initial design and research, shake tables are used to evaluate the performance of existing structures. Retrofitting and upgrading older buildings to meet modern seismic standards often involve shake table testing to ensure the effectiveness of proposed improvements.

Advantages of Using Shake Tables

1. Realistic Simulation:
   Shake tables provide a highly realistic simulation of earthquake motions, offering valuable insights that static analysis cannot.
2. Safety and Risk Reduction:
   By identifying potential failures before they occur in real-world scenarios, shake table testing significantly reduces the risk of structural collapse and enhances public safety.
3. Cost-Effectiveness:
   Although constructing and maintaining shake tables can be expensive, the cost is justified by the savings from preventing structural failures and minimizing damage during actual earthquakes.
4. Regulatory Compliance:
   Shake table testing helps ensure that structures comply with stringent building codes and regulations, promoting safer construction practices.

Applications of Shake Tables

Academic Research

Universities and academic institutions use shake tables to conduct fundamental research in seismic engineering. These studies contribute to the development of new theories and models that advance the field.

Commercial Construction

In the commercial sector, shake tables are used to test the seismic resilience of various building designs. This testing is crucial for developing safe and reliable structures, particularly in earthquake-prone regions.

Government and Regulatory Bodies

Government agencies and regulatory bodies utilize shake table data to formulate and update building codes and standards. This ensures that new constructions adhere to the latest safety guidelines.

Industrial Applications

Industries involved in infrastructure development, such as bridges, dams, and nuclear facilities, rely on shake table testing to evaluate the seismic performance of their projects. This testing is essential for ensuring the structural integrity and safety of critical infrastructure.

Conclusion

Shake tables are a cornerstone of modern structural engineering, providing essential data that helps engineers design safer and more resilient buildings. Through realistic simulation of earthquake motions, shake tables enable comprehensive seismic testing, research, and performance evaluation. As the field of structural engineering continues to evolve, the role of shake tables in enhancing public safety and advancing construction practices remains indispensable. By leveraging the capabilities of shake tables, engineers can build a safer future, one structure at a time.

For Sales, Contact Us

Join industry leaders in leveraging this powerful tool to drive innovation and safety in engineering. For more information on how our tables can benefit your projects and research initiatives, visit us

Small and medium size shake tables

Large scale shake tables

Xontact us at sales@quakelogic.net or or call us at +1-916-899-0391

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