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Abstract:
Natural Resources Canada (NRCan) completed the refurbishment of the Canadian National Seismograph Network in 2019 and has since started commissioning an Earthquake Early Warning System, due to be completed in 2024. We give an overview of these projects and summarize the status of the networks.Meanwhile, the software, databases and procedures used for location and alerting of earthquakes in Canada are being modernized. NRCan is deprecating AutoDRM and Antelope in favour of an FDSNWS and SeisComP respectively. Custom legacy database schema, file formats, and automatic location and prompt earthquake notification software are being replaced with QuakeLink, StationXML, QuakeML and a commercial software called GDS. The new system will consist of two fully redundant datacentres, with configurations continuously regression tested to ensure continuous improvement. Earthquake solutions from neighbouring agencies will be available to analysts in real time. Some of the SeisComP plugins developed for NRCAN will be of use to other network operators, including new location and magnitude estimators as well as tools for the efficient generation of waveform data availability statistics. Adoption of QuakeML has forced us to develop a clear event type hierarchy and interpret evaluation status meaningfully. NRCan will mark the transition to SeisComP by adopting a new agency code. We report the progress and discuss lessons learned from this process. Finally, we report on the development of a new system to monitor volcanoes using InSAR, as well as coda envelope moment magnitudes and a regional seismic travel time model for Canada.
