Coastally Trapped Waves (CTWs) are studied along the east and north shelves of the Arabian Sea (AS) through field measurements and numerical modeling. A nondispersive barotropic wave, induced by Cyclone Ashobaa, with periods of 10–14 days propagated in wider parts of the shelf. The phase velocities and CTW amplitudes significantly decreased in narrower parts, where a stronger stratification also exists. The long waves are represented by first barotropic and lower bottom trapped modes in deeper and shallower parts of these narrow shelves, respectively. Although the low frequency oscillations, with peak periods of 10–14 days, can be detected in shallow water level data, the wavelet transforms of alongshore currents reveal these long waves exist only in deep waters. This can be attributed to the effect of bottom friction, which causes the effective coastal boundary to move offshore. The Ras al Hadd jet was deflected by the interaction of Cyclone Ashobaa with preexisting eddies and an intensified current was observed where the Ras al Hadd jet crossed the northern shelf.

通过现场测量和数值模拟研究了沿阿拉伯海（AS）东，北陆架的沿海陷波（CTW）。由气旋阿索巴（Ashobaa）引起的非分散正压波，在架子的较宽部分传播，周期为10-14天。在较窄的部分，也存在更强的分层，相速度和CTW振幅会显着降低。长波分别由这些狭窄层架的较深和较浅部分的第一正压模式和较低的底部陷波模式表示。尽管可以在浅水位数据中检测到峰值周期为10–14天的低频振荡，但沿岸水流的小波变换显示，这些长波仅存在于深水中。这可以归因于底部摩擦的影响，这导致有效的沿海边界向海上移动。Ras al Hadd射流由于旋风Ashobaa与先前存在的涡旋的相互作用而发生偏转，并且在Ras al Hadd射流越过北部大陆架时观察到了增强的电流。