Non-Tidal Water Level Variability in Lianyungang Coastal Area

The non-tidal water level fluctuation at four locations in Lianyungang coastal area was analyzed by using tide data. Results show that the non-tidal water level fluctuation was associated with the spatial distribution. The combined effects of shoaling and attenuation due to the shape and bottom topography contribute to the spatial distribution of non-tidal water level fluctuation. Two characteristic oscillation periods of about 12 h and 24 h which highly coherent throughout the four stations were revealed. Analysis of the exciting mechanisms indicates that the variability was mainly generated by fluctuation in wind speed.