F. S. Sharifi; M. Ezam; A. Karami Khaniki
Volume 2, Issue 2 , June 2012, , Pages 163-170
Abstract
In this study, the capabilities of WAWEWATCH-III and MIKE21-SW for predicting the characteristics ofwind-generated waves in Hormuz Strait are evaluated. The numerical models have been set up using Input data including GFS wind with 5° spatial resolution and 6 hours time intervals, along with ...
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In this study, the capabilities of WAWEWATCH-III and MIKE21-SW for predicting the characteristics ofwind-generated waves in Hormuz Strait are evaluated. The numerical models have been set up using Input data including GFS wind with 5° spatial resolution and 6 hours time intervals, along with the ETOPO1 bathymetry data with 2 arc-minute spatial resolutions. The results of the two model simulations were compared with the available satellite altimetry measurements of significant wave heights at the modeling area. The comparisons show that in deep water WAVEWATCH-III results in more reliable prediction of wave characteristics in comparison to the MIKE-21 SW. While in shallow area the MIKE-21 gives more consistencies with altimetry measurements. These may be due to the benefits of the unstructured grid which are used in MIKE-21, lead to better representations of the coastal area. The investigation on the direction of wind generated waves in the modeling area show that in some regions despite of the increase in wind speed, significant wave height remains nearly unchanged. This is mainly because of rapid changes in wind direction over the Strait of Hormuz.
L. S. Madani; A. A. Bidokhti; M. Ezam
Volume 2, Issue 1 , March 2012, , Pages 107-114
Abstract
An analytical model for a coastal boundary current was used to investigate heat and salt budget of exchange flows in the Persian Gulf as a marginal sea. Coastal boundary currents exchange heat and freshwater with the mosphere and the offshore waters. As heat and salinity fluxes caused by air-sea interaction ...
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An analytical model for a coastal boundary current was used to investigate heat and salt budget of exchange flows in the Persian Gulf as a marginal sea. Coastal boundary currents exchange heat and freshwater with the mosphere and the offshore waters. As heat and salinity fluxes caused by air-sea interaction and eddy activities, different temperature and salinity associated with boundary currents are adjusted on different length scales. Results obtained from the model show that the temperature and salinity length scales of coastal boundary current are 455 km and 914 km, for summer respectively for summer. In summer the inflow current density initially decreases to a local minimum and then increases, and finally flowing out the basin area with higher density than that of for the inflow. In winter, the estimated temperature and salinity length scales of coastal boundary current are 60 km and 64 km, respectively. In this season, density increases at the beginning with a steep slope and reaches a constant value and, finally the current flows out of the basin area.