Abstract
Five distribution functions, FT-I and Weibull with the exponent k = 0.75, 1.0, 1.4 and 2.0 respectively, have been applied to 25-year wind data collected between 1972 and 1996 at Tanga, Dar Es Salaam, Zanzibar and Mtwara Meteorological stations. One maximum value for every year from the full data record was drawn to constitute the annual maxima series for each station. For each of the stations, 2-, 50- and 100-year return wind speeds with corresponding 90% confidence intervals were computed. The distribution functions were fitted to the data by the Least Squares Method. Results from the study show that FT-I and the Weibull distribution with k = 1.0 and 2.0 have the highest correlation coefficient and the smallest sum of the squares of residuals. The 50- and 100-year return wind speeds are respectively 26 and 27 knots for Tanga, 27 and 28 knots for Dar Es Salaam, 29 and 30 knots for Zanzibar and 36 and 37 knots for Mtwara.
Recommended Citation
Dubi, A. (1999). Evaluation of Extreme Wind Speeds In Relation To the Design of Coastal Structures in Tanzania. Tanzania Journal of Engineering and Technology (TJET), 23(1), 57-64. https://doi.org/https://doi.org/10.52339/tjet.v23i1.290
Publisher Name
University of Dar es Salaam
Included in
Civil Engineering Commons, Mechanical Engineering Commons, Structural Engineering Commons