A major earthquake in Taiwan. Hypocenter location:
DATE TIME SOURCE MAG LAT LON DEPTH DESCRIPTION
1999/09/20 17:47:19.0 SPYDERŪ 7.6 23.78 121.09 33.00 TAIWAN

Waveforms from our own basement, from the broad-band seismic sensor operated there by Weston Observatory. Traces start at the 18 h 00 min 00 sec (GMT) on 09/20/99, with time marked in seconds, and are arranged in the following order: E-W, N-S, V.
Window scaling. Filtered below 10 seconds

Body waves:

Surface waves: