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Summary of IOT Publications

Title Analysis of meteo-oceanographic observations near international harbors in Taiwan (2019)
Dept Transportation Technology Research Center
Year 2020
Month 2
Price 400
Summary       Statistical analysis results show that the mean annual wind speed in Keelung Harbor is 3.7 m/s; mean annual significant
wave height (Hs) is 1.2 m; wave period (Tp) distribution is primarily 6 to 8 seconds; and mean current velocity is 24.8 cm/s. The
mean annual wind speed in Su’ao Harbor is 3.6 m/s; mean annual significant wave height is 1.3 m; mean Hs is highest in autumn
and winter; and wave height is c. 1.5 m. Mean current velocity is 16.5 cm/s, the lowest found in this study. Mean annual wind
speed in Hualien Harbor is 3.4 m/s; Hs is 1.3 m; wave period distribution is primarily 8 to 10 seconds; and the mean current velocity
is 19.7 cm/s. Mean annual wind speed in Kaohsiung Harbor is 2.5 m/s; Hs is 0.7 m; Tp distribution is the highest of those studied,
with less than 6 seconds; and mean current velocity is 26.9 cm/s. Mean annual wind speed in Anping Harbor is 4.3 m/s; Hs is 0.7
m; wave period distribution is primarily 6 to 8 seconds; and mean current velocity is 23.6 cm/s. Mean annual wind speed in
Taichung Harbor is 9.6 m/s, which was the highest found in this study. Hs is 1.5 m; wave period distribution is primarily 6 to 8
seconds; and mean current velocity is 38.1 cm/s. Mean annual wind speed in Taipei Harbor is 5.4 m/s; Hs is 1.1 m; wave period
distribution is primarily 6 to 8 seconds; and mean current velocity is 43.1 cm/s.
      Four typhoons impacted Taiwan in 2019. With mild typhoon Danas, the maximum significant wave height occurred in Su’ao
Harbor, where the maximum value was 3.2 m (wave period 10.9 seconds, wave direction ESE). The maximum average wind speed
occurred in Taichung Harbor, where maximum wind speed was 18.6 m/s (wind direction NNE). With severe typhoon Lekima, the
maximum significant wave height occurred in Keelung Harbor, where the maximum value was 4.54 m (wave period 11.26 seconds,
wave direction NE). The maximum average wind speed occurred in Taipei Harbor, with maximum wind speed 26.5 m/s (wind
direction SW). With mild typhoon Bailu, the maximum significant wave height occurred in Su’ao Harbor, where the maximum
value was 6.69 m (wave period 12.56 seconds, wave direction ESE). The maximum average wind speed occurred in Su’ao Harbor,
with maximum wind speed of 20.3 m/s (wind direction SSE). During moderate typhoon Mitag, the maximum significant wave
height occurred in Keelung Harbor, with the maximum value of 7.11 m (wave period 12.47 seconds, wave direction ENE). The
maximum average wind speed occurred in Taichung Harbor, where the maximum wind speed was 29.5 m/s (wind direction NNE).
Based on the results of this research, the observation data has been provided to government agencies and academic
institutions for reference application. The meteo-oceanographic observation system and database will provide a reference for ship
navigation, harbor planning and harbor construction, and help to enhance the operational efficiency and quality of each harbor.
Post date 2020-04-24
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