Frequency-wavenumber spectra of equatorial waves detected from satellite altimeter data

Yoshinobu Wakata

研究成果: ジャーナルへの寄稿記事

10 引用 (Scopus)

抄録

The sea surface height anomaly in the Pacific equatorial area was separated into equatorial modes using satellite altimeter data. The power-spectral density (PSD) was obtained for the east-west wavenumber and frequency for each separated mode. The PSD distribution was compared with the theoretical dispersion curve for the equatorial modes derived by Matsuno (1966). The first Rossby modes have a high-density distribution that is slightly lower than the theoretical dispersion curve, but the Kelvin mode and the higher Rossby modes have high-density distribution that almost matches each dispersion curve. Results of analyses of satellite observational data show that wave motion near the equator mainly shows characteristics of equatorial waves, especially for a intraseasonal time scale.

元の言語英語
ページ(範囲)483-490
ページ数8
ジャーナルJournal of Oceanography
63
発行部数3
DOI
出版物ステータス出版済み - 6 1 2007

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equatorial wave
altimeter
sea surface height
timescale
anomaly
distribution

All Science Journal Classification (ASJC) codes

  • Oceanography

これを引用

Frequency-wavenumber spectra of equatorial waves detected from satellite altimeter data. / Wakata, Yoshinobu.

:: Journal of Oceanography, 巻 63, 番号 3, 01.06.2007, p. 483-490.

研究成果: ジャーナルへの寄稿記事

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