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Velocity of propagation of temperature anomalies in the tropical zone of the Indian Ocean

机译:印度洋热带地区温度异常的传播速度

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摘要

We describe the space-and-time structure of large-scale thermal anomalies in the upper layer in the tropical zone of the Indian Ocean and study the mechanism of their formation. It is shown that the critical layer in which the phase velocities of propagation of disturbances coincide with the mean velocity of the zonal current can be formed in the central part of equatorial zone of the Indian Ocean (between 9° and 12°S). In this layer, the formation of growing disturbances is possible due to the barotropic-baroclinic instability of the system of zonal currents.
机译:我们描述了印度洋热带地区上层大规模热异常的时空结构,并研究了其形成机理。结果表明,可以在印度洋赤道带的中部(9°至12°S之间)形成一个临界层,在该临界层中,扰动传播的相位速度与纬向电流的平均速度一致。在这一层中,由于纬向流系统的正压-斜压不稳定性,可能形成不断增加的扰动。

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