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QIAO Fang-li, TAL Ezer, YUAN Ye-li. The zonal distribution features of high frequency oscillations in the oceans derived from satellite altimeter data[J]. Haiyang Xuebao, 2004, 26(3): 1-7.
Citation: QIAO Fang-li, TAL Ezer, YUAN Ye-li. The zonal distribution features of high frequency oscillations in the oceans derived from satellite altimeter data[J]. Haiyang Xuebao, 2004, 26(3): 1-7.

The zonal distribution features of high frequency oscillations in the oceans derived from satellite altimeter data

  • Received Date: 2003-07-10
  • Rev Recd Date: 2003-12-25
  • Based on TOPEX/Poseidon(T/P) and ERS-1 and 2 satellite altimeter data between October 1992 and December 2000,high frequency oscillations with periods less than 150 d are analyzed and their spatial distributions are described.The ratio,instead of the energy itself,of the energy corresponding to certain frequency band from power spectrum relative to the total energy in the 20~143 d range is analyzed.The results show that the period of the most energetic oscillations in this band continuously increases with latitude fr om about 1 month near the tropics to about 4 months near 30b,in agreement with the latitudinal dependency of the phase speed of westward propagating Rossby waves,which dominate the variability in those latitudes.As a result,the global spatial distributions of the period of the dominant oscillations are largely zonal,with relatively small differences between different ocean basins.It suggests that the oscillations with periods around 60 d are mainly associated with Rossby waves except being often regarded as tidal aliasing.
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