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Barotropic disturbances caused by a point storm in aβ-plane ocean

机译:Aβ平面海洋点风暴引起的波奇波波特扰动

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Barotropic equation for vorticity balance in theβ-plane is solved for a volume transport stream function with a northward moving wind stress torque concentrated at a point (tweak). Asymptotic techniques are applied to the solution expressed by Fourier type integrals. In the front zone (northern half from the tweak) the stream function behaves asO(|X|?5) whereX is a scaled eastward coordinate. In the wake, the stream function behaves asO(|X|?1/2) within a wedge bounded by the westward axis and a line directed SSE approximately, but behaves asO(|X|?5) in the rest of the half plane. On these boundaries it behaves asO(|X|?5/2) andO(|X|?1/3), respectively. East-west asymmetry is a result of asymmetry in zonal propagation of the planetary waves, which also cause the wavy pattern of the streamline in the western half of the wake. Friction is most effective in decreasing the stream function in the south to SSW sector and least effective to the west. Effect of divergence changes the wave pattern in the western half of the wake but does not change magnitude of the stream function. It is speculated that abnormal changes in daily mean sea levels observed in 1965 to 1971 along the south coast of Japan may be caused by the wake effect of moving typhoons east off Japan.
机译:在β面上涡旋平衡的压波波波塔波特方程被求解在一个点(调整)处浓缩的向上移动的风力应力扭矩。渐近技术应用于傅里叶型积分表达的溶液。在前区(从调整到北半部分)流函数在ASO(| x |α5)中行为,其中是缩放的东方坐标。在唤醒中,流功能在由向西轴线的楔形边缘内的叶片(| x |α1/2)行为,并且近似指向SSE的线路,但在半平面的其余部分中表现为OO(| x |?5) 。在这些边界上,其行为分别表现为OO(| x |α5/2)和o(| x |α1/3)。东西人不对称是行星波的区域传播中不对称的导致,这也导致西半部的流线的波浪模式。摩擦最有效地将南方的流功能降低到SSW部门,对西方最不有效。发散的效果改变了唤醒的西半部半的波模式,但不会改变流功能的大小。据推测,日本南海岸1965年至1971年观察到的日常平均海平面的异常变化可能是由日本移动台东方的唤醒效果引起的。

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  • 来源
    《日本海洋学会誌》 |1976年第1期|共15页
  • 作者

    Takashi Ichiye;

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  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
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