CWB free-field strong-motion data from the 21 September Chi-Chi, Taiwan, earthquake

Bulletin of the Seismological Society of America
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Abstract

The Chi-Chi earthquake occurred at 17:47 on 20 September 1999 and is the largest earthquake (MW 7.6) to have occurred on land in Taiwan in the twentieth century. This earthquake caused considerable damage and was named the “921 Chi-Chi Great Earthquake” by the Taiwan government, as the local date was 21 September. Because an extensive strong-motion instrumentation program in Taiwan was completed by the Central Weather Bureau (CWB) in 1996, over 30,000 digital strong-motion records have been obtained from the Chi-Chi earthquake and thousands of its aftershocks. These records form the largest set of strong-motion data recorded from a major earthquake since strong-motion seismology studies began in the 1930s. This data set is important to seismology and earthquake engineering because it includes over 60 recording sites within 20 km of the fault ruptures, which provides a five-fold increase of such near-field records available for the entire world.

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Publication type Article
Publication Subtype Journal Article
Title CWB free-field strong-motion data from the 21 September Chi-Chi, Taiwan, earthquake
Series title Bulletin of the Seismological Society of America
DOI 10.1785/0120000744
Volume 91
Issue 5
Year Published 2001
Language English
Publisher Seismological Society of America
Description 7 p.
First page 1370
Last page 1376
Country Taiwan
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