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Surface waves from a M6.9 #Earthquake near Bengkulu, Indonesia at 18/11/2022 13:37:09UTC, received in the UK ~11500 km away approximately an hour after the earthquake on #BGSSeismology and #Raspishake devices. The frequency of these waves is shown on a plot from the BGS Elmsett seismometer. @PoLaRobs
I should have acknowledged that the plot is a time frequency representation created using the plot_tfr function in #ObsPy.