Wavegroups for OSG-054 Onsala, 2009-06-15 .. 2021-08-21
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| Diurnal |
Semi-diurnal
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Caption:
Spectra of time series of "whitened" residual
(noise is levelled as it appears at the stage of least-squares
adjustment).
Black curve: Power spectrum of whitened residual, auto-covariance
length 8192, Kaiser-Bessel window
Red curve: Periodogram, Hanning windowed
Gray band: Low-order PEF power spectrum, determines the level of
uncertainty. See the wide-band power spectra.
Wall paper "up to the roof", light blue and gray: shows the width of
the wavegroups given by the partial tides in Tamura's development at
degree 2.
Wall paper "near the floor": like before but for degree 3.
For degree 4, one wavegroup in each fundamental band.
Darwin symbols and dark purple lines: The central (the
largest) partial wave in each wavegroup.
Dots: Partial tide amplitudes, not drawn to scale. Blue: degree 2;
black enhanced with an x: degree 3; cyan:
degree 4.
Notice the overlap of degree 3 species and degree 2 wavegroups.
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Black: "Raw" residual; red: whitened residual; light blue: the
PEF filter (order=10, not drawn to scale)
