Abstract:

Following the completion of a permanent tidal gauge station at Chinese Zhongshan Station in Antarctic, the second was constructed at Chinese Great Wall Station in January 2012. In this paper, the data obtained from the tide station at Great Wall Station are processed and analyzed. The results of leveling survey for the tidal datum system and the zero calibration of tide gauge are calculated. The harmonic constants of 170 tidal constituents are obtained using harmonic analysis. Tide prediction is carried out using those constants. Meanwhile, the characteristics of residual water level is studied, and the feasibility of using the residual water level of the nearby tide station, Antarctic Base Prat, to correct tide prediction at Great Wall Station is discussed. The results show that using residual water level correction of Antarctic Base Prat could significantly improve the accuracy of tide prediction at Great Wall Station. The error of the 2014 time period after the water level correction, ±3.42cm, is significantly better than that in the pre correction prediction, ±10.43cm.

Key words: Antarctic, Great Wall Station, tidal datum system, calibration of tide gauge zero, residual water level, tide prediction