CHARACTERISTICS OF TIDE LEVEL AFFECTED BY KUROSHIO
S. Terachi, S. Ogata
Abstract:
With the aim of better understandings on the tide level, which repeats a cyclic motion under the influence of a strong current “Kuroshio”, we observed it over a few years. We then analyzed its time series data on a time-frequency basis by wavelet and short time Fourier transform techniques using a Gabor function. The time-frequency representation revealed a remarkable effect of the winding of the current. With the beginning of the winding, a phase gap between 12 hrs and 24 hrs periodic modes resulted in markedly, and the reappearance period of these modes decreased from about 400 hrs to 300 hrs.
Keywords:
tide level observation, wavelet transform, short time Fourier transform
Download:
IMEKO-WC-2000-TC19-P581.pdf
DOI:
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Event details
Event name:
XVI IMEKO World Congress
Title:

Measurement - Supports Science - Improves Technology - Protects Environment ... and Provides Employment - Now and in the Future

Place:
Vienna, AUSTRIA
Time:
25 September 2000 - 28 September 2000
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