[A-OS14] 海洋物理学一般

[AOS14-10] A tale of sea level dynamics in the Arabian Gulf

*Muhammad Usman¹ (1.Life and Environmental Science LES Department, Zayed University, Abu Dhabi, UAE)

キーワード：Sea Level, Wind , Cyclicity, Arabian Gulf

The Arabian Gulf's level oscillates up and down on a seasonal scale. Some studies claim that the wind has a limited role, while others indicate that the wind has a strong role and controls the cyclic intra-annual movement of the Arabian Gulf. In this research, I use satellite altimetry data. To ensure stationarity and decompose the time series into seasonal and trend components. I model the trend component using linear regression mode and the cyclic component using first-order Fourier series and the simple sine curve model. I compared the two seasonal models and found that a simple sine curve model also explains well the cyclic rise and fall of the Arabian Gulf. There seems to be a phase shift in the direction of the wind and it correlates with the cyclic rise and fall of the Arabian Gulf.