Connectivity for Seismic Monitoring
Case Study
Wide-Area Sensor and Monitoring Networks
The Challenge:
Monitoring seismic activity across vast and remote regions requires a communications network that is both reliable and real-time. Traditional sensor networks can face connectivity issues due to mountainous terrain, limited infrastructure, and lack of cellular coverage.
In the Southern Appalachian mountain range—stretching across parts of western North Carolina and southern Virginia—collecting continuous data from hundreds of dispersed sensors is critical for early warning systems and scientific research. However, public networks may be unavailable or inconsistent in these areas, and unlicensed spectrum can suffer from interference and signal degradation.
A secure, resilient communication platform was needed to ensure real-time data transfer across hundreds of seismic sensors—delivering the accuracy and timeliness needed for earthquake monitoring and public safety.
The Approach:
An earthquake research center in the southeastern United States modernized its seismic monitoring system using licensed 220 MHz spectrum to transmit real-time data from more than 500 sensors dispersed across the Southern Appalachians.
The 220 MHz band was selected for its long-range, non-line-of-sight coverage, strong signal penetration through rugged terrain, and protection from interference. The solution enabled the research center to collect and transmit seismic data reliably with minimal infrastructure—ideal for areas with limited accessibility.
the results:
- Reliable, Real-Time Data Transfer: The upgraded system ensures continuous delivery of seismic readings from hundreds of field sensors, improving the ability to detect and respond to seismic activity.
- Expanded Monitoring Reach: With fewer towers needed, the 220 MHz spectrum supports wide-area coverage even in remote mountain locations, enabling a larger monitoring footprint.
- Secure and Interference-Free Communications: Operating on licensed spectrum reduces the risk of interference and ensures data integrity for critical monitoring operations.
- Cost-Effective Infrastructure: The efficient propagation characteristics of 220 MHz reduce deployment and maintenance costs by limiting the need for extensive network infrastructure.
By leveraging the advantages of the 220 MHz band, the research center has created a robust communications backbone for seismic monitoring—enhancing early warning capabilities and supporting long-term earthquake research in a challenging geographic region.
