Ahmed A. Abdalazeez
Red Sea University, Institute of marine research, Portsudan, Sudan
Title: Seasonal variations of runup, wave height and wind speed in the northern Indian Ocean
Biography
Biography: Ahmed A. Abdalazeez
Abstract
The aim of this study is to estimate the seasonal variation of runup, wave height and wind speed on selected beaches around the northern Indian Ocean. The runup has been estimated using ERA-Interim, which is the latest global atmospheric re-analysis produced by the European Centre for Medium-Range Weather Forecasts (ECMWF). ECMWF uses the global Wave Model (WAM) model to calculate two dimensional wave spectra. A great circle calculator has calculated the distances between the model grid points and the beaches. The significant wave height as well as the peak wave period at the grid points assumed the same at the beach. The most frequent estimated runup is between 0.5 m and 1.0 m, which produced by swell coming from the southern Indian Ocean for all locations except Sri Lanka and Indian shores, where the most frequent runup value is less than 0.5 m. However, the extreme wave runup occurs with the largest wave heights during summer monsoon in July. Generally, the high wave height depends on wind speed. The mean elevation of the runup for all locations is 0.56 m.