A DISCUSSION ON THE PRESEISMIC DISTORTIONAL BEHAVIORS OF WATER LEVEL SOLID TIDE IN SHANXI NO. 2 WELL IN TANGSHAN CITY

The observations and prediction practice in the past few years indicate that the water level solid tide in Shanxi No. 2 well displayed obviousg distortional behaviors before earthquakes, showing a good eorrespondin relation to earthquakes. We considered that preseismic water level distortion is a relatively reliable information immediately before seismic event, so we should make a deeper analysis and study on it.