A Study of the Fluctuations of the Wind Field Over the Tropical Indian Ocean.
NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF
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Using radiosonde data from six widely scattered stations in the Indian Ocean, an attempt was made to identify quasi-periodic wind oscillations during the 1973-1974 winter monsoon season. The data were analyzed using spectrum analysis and time cross-section analysis techniques. In general, the results of the power spectra computed show a seven-day peak which seems most significant. A four-five day peak and a thirteen-day peak were also found at some stations. The cross-spectrum analysis shows little correlation of the peaks, indicating uncertainty in the significance of the spectral results.