| Abstrakt: |
The refractive index is one of the important inherent optical properties of seawater. Accurate knowledge of the refractive index is necessary for different scientific domains. In this study, the refractive index of Persian Gulf water within the visible light region is investigated by using Seaver–Millard algorithm. Input data for the model calculations are temperature, salinity, and pressure. Salinity and temperature data were obtained from World Ocean Atlas 2013 (WOA13). The Gulf water density, which is required to determine the pressure, was calculated from the UNESCO International Equation of State. The calculations showed that annual mean values of the index of refraction on the Persian Gulf surface at the wavelengths of 0.5 μ m , 0.6 μ m , and 0.7 μ m are 1.34181, 1.33795, and 1.33540, respectively. These values vary by about 0.0015 due to significant variations in salinity and temperature, which are mainly caused by the influence of factors such as seasonal changes in the weather, inflow seasonal variation of low-salinity surface water from the Indian Ocean into the Gulf through the Strait of Hormuz, and the turbulence mixing processes of solar heating. The refractive index generally decreases from the head of the Gulf toward Strait of Hormuz all year round and increases from the surface to the bottom in the spring and summer. [ABSTRACT FROM AUTHOR] |
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