The Canadian National Seismograph Network (CNSN) is a network of

seismograph A seismometer is an instrument that responds to ground displacement and shaking such as caused by quakes, volcanic eruptions, and explosions. They are usually combined with a timing device and a recording device to form a seismograph. The out ...

s to detect

earthquake An earthquakealso called a quake, tremor, or tembloris the shaking of the Earth's surface resulting from a sudden release of energy in the lithosphere that creates seismic waves. Earthquakes can range in intensity, from those so weak they ...

s across

Canada Canada is a country in North America. Its Provinces and territories of Canada, ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, making it the world's List of coun ...

. It is operated by

Natural Resources Canada Natural Resources Canada (NRCan; ; )Natural Resources Canada is the applied title under the Federal Identity Program; the legal title is Department of Natural Resources (). is the department of the Government of Canada responsible for natural r ...

and consists of approximately 150 seismic stations. More than 100 of these stations are equipped with both weak-motion seismometers and strong motion accelerometers, while the remainder have only weak-motion seismometers. While initial, analogue stations began operation in 1898, the network became digital in 1975. Information on stations' locations and operations can be found on the CNSN Station Book. Natural Resources Canada operates, separately, a network of over 300 specialized sensors used by the Canadian Earthquake Early Warning system.

References

Sources * Seismology of Canada Seismological observatories, organisations and projects {{Seismology-stub