Abstract

Amplitudes of seiches are generally very small in Chinese coastal waters with the exception of Longkou Harbour, where some extraordinary seiches have occurred. Tide gauge records over a period of twenty-three years, including 137 seiches with a maximum fluctuation greater than 40 cm, were examined. Preliminary results given here include variabilities of occurrences, distributions of mean periods, maximum fluctuations, and occurrence durations, along with a list of large seiches. In addition, an illustration of the seiche on 1 September 1980 with a maximum fluctuation of 293 cm is given.

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