GB 17740-1999
AbolishedGeneral ruler for earthquake magnitude
地震震级的规定
Application Summary AI generated
This standard specifies the methods and formulas for calculating earthquake magnitude based on seismic wave recordings, providing a unified ruler for measuring earthquake size in China. It is applied in seismological monitoring stations and earthquake early warning systems to ensure consistent magnitude reporting for seismic events. The standard is critical for earthquake engineering, disaster response planning, and building code compliance in seismically active regions.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.