Title Observation and statistical analysis of tide levels in commercial ports
Dept Transportation Technology Research Center
Year 2024
Month 3
Price 160
Summary     This project describes the tide level observation operations and quality control of tide level observation data (from December 2011 to November 2012) at domestic commercial ports in Taipei, Keelung, Suao, Hualien, Kaohsiung, Anping, Budai, and Taichung. In conjunction with the harbor construction elevation, the tidal characteristics were discussed. The average tidal range of Keelung Port is about 0.57 meters, and the maximum tidal range is 1.48 meters, which is mixed tide. The average tidal range in Taipei Harbor is about 2.31 meters, and the maximum tidal range is 3.74 meters, mainly semidiurnal tides. The average tidal range in Taichung Harbor is approximately 3.81 meters, and the maximum tidal range is 5.55 meters, mainly semidiurnal tides. The average tidal range in Butai Harbor is about 1.42 meters, and the maximum tidal range is 2.51 meters. It is mainly semidiurnal tide. The average tidal range in Anping Port is about 0.59 meters, and the maximum tidal range is 1.52 meters, which is mixed tide. The average tidal range in Kaohsiung Port is about 0.52 meters, and the maximum tidal range is 1.30 meters, which is mixed tide. The average tidal range in Hualien Port is about 0.95 meters, and the maximum tidal range is 1.94 meters, mainly semidiurnal tides. The average tidal range in Suao Harbor is about 0.91 meters, and the maximum tidal range is 2.06 meters, which is mixed tide.
    This project analyzes the typhoons that invaded Taichung Port from 2011 to 2020. The water level changes during the typhoons. The moderate typhoon Sudila in 2015 (near the central air pressure of 930hPa) raised the water level by 0.62 meters. The water level increased by 0.62 meters during the severe typhoon Meranti in 2016. (The air pressure near the center of the platform is 900hPa), followed by the water level rise of 0.57 meters. Looking at the analysis results, the typhoon surge is obviously related to the typhoon path and central air pressure.
    This project has completed the tidal analysis of Taiwan's major commercial ports. The time series calendar chart can show the monthly numerical changes, and the important value statistical table can show the relevant statistical values. The relevant results can be provided to the Port Bureau and the Hong Kong Company. Or other relevant units in the port area as a reference for port operation safety, embankment design, disaster prevention and early warning, ships entering and leaving the port, etc.
Post date 2024/03/28
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