THE MAGNITUDE 7.7 CENTRAL TAIWAN EARTHQUAKE OF SEPTEMBER 20, 1999


Also know as the Chi-Chi Earthquake, or the 921 Earthquake, for the local time (17:47 UTC, + eight hours) of 01:47am on September 21, 1999.

At least 2,297 people killed, 8,700 injured, 600,000 people left homeless and about 82,000 housing units damaged by the earthquake and larger aftershocks. Damage estimated at 14 billion U.S. dollars. Maximum intensity (VI JMA) in Nan-tou and Tai-chung Counties (areas 6 and 4 on map, respectively). Half of a village was lost by subsidence into the Ta-an Hsi and landslides blocked the Ching-shui Hsi, creating a large lake. Two other lakes were created by substantial ground deformation near the epicenter. Surface faulting occurred along 75 km of the Chelungpu Fault.
- USGS Hazards Program


The following photos were take 6 months after the earthquake by:

Dr. Robert B Herrmann, Professor of Geophysics and Reinert Professor of Natural Sciences,
Department of Earth and Atmospheric Sciences
Saint Louis University

Images from Jiji Township, Nantou County, Taiwan
Shih-kang Dam

Pifeng Bridge, Shihkang, Taichung

Damage to surrounding areas caused by vertical ground displacement

The Kuangfu Public High School in Wufeng

Damage from surrounding areas

The Grounds of the Wuchang Temple

Before/after commemorative wooden postcards of Wuchang Temple


Earthquake Center