After accounting for human and natural causes, data gathered at more than 600 measuring stations set up around Taiwan since 1997 by the Water Resources Agency and the Central Geological Survey recorded only two abnormal pre-quake fluctuations in water levels.
根據他自 1997 年至今、研究水利署與經濟部中央地調所在全台設置的 600 多口地下水觀測井的資料顯示，在排除其他自然及人為因素後，只有兩筆可視為震前出現不尋常的水位異動紀錄。