SharpCEEWPServer: A Lightweight Server for the Communication Protocol of China Earthquake Early Warning Systems

Area of Science:

• Geophysics
• Seismology
• Earthquake Engineering

Background:

• Commercial seismometers increasingly support the China Seismic Transmission Protocol (CSTP).
• Existing solutions for archiving CSTP data and integrating it into data processing systems are often complex, inflexible, or costly.
• There is a need for accessible tools to manage real-time seismic data streams.

Purpose of the Study:

• To design and implement a lightweight, user-friendly server for managing CSTP data streams.
• To enable the conversion of CSTP streams to the widely supported SeedLink format.
• To provide a low-cost integration solution for seismic networks and earthquake emergency response.

Main Methods:

• Developed SharpCEEWPServer, a graphical server with client management, data reception, visualization, and archiving capabilities.
• Integrated RingServer functionality to convert CSTP to SeedLink streams.
• Evaluated hardware compatibility with four commercial CSTP instruments.
• Assessed forwarding functionality, reliability, and concurrency performance using simulated networks.
• Analyzed stability under network impairment scenarios.

Main Results:

• SharpCEEWPServer reliably receives and forwards real-time seismic data streams.
• Laptop-class hardware can handle data from 1000 seismometers during an M7.0 earthquake scenario.
• The server successfully converts CSTP streams to SeedLink format.
• Forwarding system performance and stability were confirmed.

Conclusions:

• The SharpCEEWPServer significantly reduces the barrier to entry for utilizing CSTP-capable instruments.
• It offers an efficient and cost-effective integration solution for temporary seismic networks and arrays.
• Current latency limitations make it suitable for non-early warning applications, with potential for future improvements.