Figure 8 | Scientific Reports

Figure 8

From: Data analysis of the unsteadily accelerating GPS and seismic records at Campi Flegrei caldera from 2000 to 2020

Figure 8The alternative text for this image may have been generated using AI.

Examples of Fourier spectrum of the ground displacement GPS data. Plots (a–c) show the vertical displacement recorded at RITE GPS station; plots (d–n) show the horizontal displacement recorded at (d-f) ACAE, (g–i) IPPO, and (l–n) BAIA GPS stations. Plots (a,d,g,l) are calculated on a 2-year moving average in 2000–2020, plot (b,e,g,m) on a 6-month moving average in 2011–2020, plot (c,f,i) on a 30-day moving average in 2018–2020. Main time periods are marked and labeled. Supporting information S1 also includes the Fourier spectrum of the vertical and the horizontal components of ground displacement at all analyzed GPS stations. These detail the 2-year, 6-month, and 30-day average results obtained in 2000–2020, 2011–2020, 2018–2020.

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