China has started building a test satellite to detect electromagnetic anomalies in the atmosphere, as part of the country's proposed earthquake monitoring network, and hopes to launch it in 2014.

The China Seismo-Electromagnetic Satellite (CSES) has been in development since 2003 and is the first spaced-based component of the network.

Its data will be correlated with data from ground-based monitoring systems.

The network is eventually intended to provide advance warning of earthquakes, such as the one off the coast of Japan last March.


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