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Performance of the NCREE's on‐site warning system during the 5 February 2016 M w 6.53 Meinong earthquake
Author(s) -
Hsu TingYu,
Wang HsuiHsien,
Lin PeiYang,
Lin CheMin,
Kuo ChunHsiang,
Wen KuoLiang
Publication year - 2016
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1002/2016gl069372
Subject(s) - seismology , epicenter , peak ground acceleration , moment magnitude scale , geology , earthquake prediction , magnitude (astronomy) , aftershock , foreshock , warning system , earthquake warning system , geodesy , ground motion , engineering , physics , geometry , mathematics , astronomy , aerospace engineering , scaling
The National Center for Research on Earthquake Engineering in Taiwan has developed an on‐site earthquake early warning system (NEEWS). The Meinong earthquake with a moment magnitude of 6.53 and a focal depth of 14.6 km occurred on 5 February 2016 in southern Taiwan. It caused 117 deaths, injured 551, caused the collapse of six buildings, and serious damage to 247 buildings. During the Meinong earthquake, the system performance of 16 NEEWS stations was recorded. Based on a preassigned peak ground acceleration (PGA) threshold to issue alarms at different stations, no false alarms or missed alarms were issued during the earthquake. About 4 s to 33 s of lead time were provided by the NEEWS depending on the epicenter distance. In addition, the directivity of the earthquake source characteristic and also possibly the site effects were observed in the diagram of the distribution of PGA difference between the predicted PGA and the measured PGA.