Abstract
Urban centers can receive a 15‐to‐30‐second advance warning about impending earthquakes if several technical criteria are met, according to a study by Ta‐liang (Leon) Teng of the Southern California Earthquake Center and Yih‐Min Wu of the Taiwan Central Weather Bureau. The study is published in the Bulletin of the Seismological Society of America, vol. 92, no. 5, June 2002).Teng and Wu's system for developing early warnings for earthquakes relies on data from a “virtual sub‐network” automatically established when an earthquake triggers a group of nearby seismic stations. That information can then be immediately distributed as an early warning.
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