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I was useing Obspy spectrogram to look some Deep-ocean Assessment and Reporting of Tsunamis (DART) data.

The raw data is seafloor pressure[dbar].(The variation of pressure with Time)

enter image description here

The spectrogram x scale is time series, y scale is frequency.

I would like to get the data (The variation of amplitude of frequency with Time) which converted by spectrogram(FFT).

And I expect to plot like this picture.

enter image description here

What should I do? Is there have any way to get the converted data?

Could I output the data (The variation of amplitude of frequency with Time)?

Frank
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  • Please clarify your specific problem or provide additional details to highlight exactly what you need. As it's currently written, it's hard to tell exactly what you're asking. – Community Nov 11 '22 at 13:24

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