The shaking from the magnitude-6.8 mainshock was larger than expected in 2500 years. The foreshock may have left a seismic warning that another quake was coming.
To know what happens to a fault during an earthquake, we need to have our eyes on it. A new drilling project gets instruments as close as possible to the source of a future earthquake in Taiwan.
The pattern of recent earthquakes in the area indicated this event was likely, and an even larger quake is possible in the future.
1 月 3 日台灣東部外海規模 6.0 的地震撼動了台北市區，但靠近震央的城市只有感覺到輕微的震動。
An offshore magnitude-6.0 earthquake on January 3 rattled the Taipei metropolitan area, but cities closer to the epicenter felt only light shaking.