The Ji-ji Earthquake of September 20, 1999
Main Shock
Origin Time: 17:47:19 UTC (Sep. 21, 1:47 a.m. local time)
Epicenter: 23.85N, 120.78E (CBW)
Epicenter: 23.728N 121.058E (USGS)
Depth: 1.1 Km (CWB)
Surface Wave Magnitude: 7.6 (USGS)
Body Wave Magnitude: 6.3 (USGS)
Moment Magnitude: 7.6 (USGS)
? Magnitude: 7.3 (CWB)
CWB: Central Weather Bureau, taiwan, USGS: United States Geological Survey, U.S.A.
from http://www.cwb.gov.tw/ and
http://wwwneic.cr.usgs.gov/neis/bulletin/99_EVENTS/990920174719/990920174719.HTML
After Shocks
After shocks observed by CBW (ploted by ERI?)
from http://wwweic.eri.u-tokyo.ac.jp/topics/taiwan/index.html
After shocks observed by CBW
Click on the figure to enlarge!
from http://921.ncree.gov.tw/e_index.php3
Mechanism
Fault plane solution by AutoCMT, ERI, University of Tokyo
from http://www.eri.u-tokyo.ac.jp/~http/AUTO_CMT/auto_cmt.html
Seismic Intensity
Distribution of Seismic Intensity by CWB
from http://www.cwb.gov.tw/
Active Faults
Click on the figure to enlarge!
from http://921.ncree.gov.tw/e_index.php3
from http://wwweic.eri.u-tokyo.ac.jp/topics/taiwan/index.html
Click on the figure to enlarge!
from http://921.ncree.gov.tw/e_index.php3
from http://www.eri.u-tokyo.ac.jp/~http/AUTO_CMT/auto_cmt.html
from http://www.cwb.gov.tw/
Click on the figure to enlarge!
from http://921.ncree.gov.tw/e_index.php3