Introduction to Time-dependent Seismic Zoning

"The current national seismic zoning map of China mainly considers long-term seismic hazard, which is usually used in seismic fortification for general buildings. The time-dependent seismic zoning map, which considers the time nonstationarity of earthquakes, usually shows medium-term seismic hazard and plays a role in seismic emergency preparedness." ---- Prof. Mengtan Gao, Institute of Geophysics, China Earthquake Administration, Chief Scientist of Seismic Zoning Map of China (GB 18306-2015)