Scsn Advanced System Monitoring and Telemetry Planning Tools

Date: 4/24/2019

Time: 06:00 PM

Room: Fifth Avenue

The USGS/Caltech Southern California Seismic Network (SCSN) is a modern digital ground motion seismic network. It develops and maintains Earthquake Early Warning (ShakeAlert) data collection and delivery systems in southern California as well as real-time ShakeAlert algorithms.

Here we present recent and ongoing innovations in telemetry, system monitoring, and data analysis that keep the network running efficiently and provide timely high-quality streaming data.

As part of the Earthquake Early Warning (EEW) System, additional stations are currently being installed across Southern California. Before the new stations are added to the pool of sites used for the EEW, they go through a rigorous automated acceptance procedure that covers seismic data analysis, triggering performance, presence of data gaps and glitches, gain evaluations and more.

For more than 350 seismic stations currently installed, we developed tools to automatically monitor the system state of health, data quality control, EPIC algorithm triggering, data transport latency, system security and up to date status, telemetry performance. One of our goals is also improving the telemetry and adding the redundancy for the data paths to maximize the data availability in case of a strong event or outage. We apply the advanced routing techniques to create secure VPN connections, send the second data stream to the Amazon cloud (AWS) for the event detection and ShakeMap generation.

We continue to improve the telemetry path diversity and minimize data transfer latency. As the state funding became available to support the EEW, we are looking to a possibility using the Californian Microwave Tower backbone. The MW network would allow us to reroute data stream from approximately 50 sites currently using cell modems.

Presenting Author: Igor Stubailo

Authors