Abstract
The Persian Gulf is a nearly 1000 km long water body located in the south of Iran with an average depth of 40 meter and a maximum depth of 170 m at its entrance, the Strait of Hormuz. The prevailing wind blows along the axis of the gulf from NW and is known as the Shamal. However, Shamal wind direction changes from NW in the northwest corner of the Persian Gulf to WNW around Kish Island and then to W at the entrance to the Strait of Hormuz. The north coastline on the Persian Gulf is also exposed to winds from SE which are strong but not as frequent as Shamal winds. The present study offers some findings of the analysis of the extensive field data along north part of the Persian Gulf and the Strait of Hormuz. Storms in the Persian Gulf show very complex patterns under the effects of Shamal, sought and Kaus winds. Wave spectra of selected stations were extracted and examined to find a proper offshore wave spectrum for the Persian Gulf. The newly proposed wave spectrum shows a better agreement with data compared to the known wave spectra.
Highlights
Starting from 2005, the Iranian Ports and Maritime Organization (PMO) defined a series of projects called “Monitoring and Modeling Studies” along Iranian Coastlines
The north coastline on the Persian Gulf is exposed to winds from SE which are strong but not as frequent as Shamal winds (Baird and Associate, 2010)
Analyzing six-months data of two offshore wave stations located in the middle part of the Persian Gulf, Mazaheri and Ghaderi (2011) examined the accuracy of different wave spectra
Summary
The Persian Gulf is a nearly 1000 km long water body located in the south of Iran with an average depth of 40 meter and a maximum depth of 170 m at its entrance, the Strait of Hormuz. Analyzing six-months data of two offshore wave stations located in the middle part of the Persian Gulf, Mazaheri and Ghaderi (2011) examined the accuracy of different wave spectra. They concluded that none of the known wave spectra can fully represent their studied area JONSWAP spectrum can be better fitted to the data. Four Nortek instrument AWACs, namely Khark, Taheri, Lavan and Faror, all deployed at 25 m water depths were chosen among wave stations to represent the variety of wave characteristics at the north, center and east parts of the Persian Gulf (Figure 1). The selected stations are not affected by islands or other geomorphological features and there are no fetch limitations through major wind directions
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