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Fig. 5 | Earth, Planets and Space

Fig. 5

From: A simple method to evaluate the air-to-ground coupling efficiency: a tool helping the assessment of seismic/infrasonic energy partitioning during an eruption

Fig. 5

Result of an analysis using the seismo-acoustic eruption tremor data in a 1–3.5 Hz, b 3.5–7 Hz, c 7–12 Hz, and d 12–18 Hz. In each panel, the top two frames show the acoustic and seismic data in the frequency band (\(d_p\) and \(d_v\), respectively), and the third shows the maximum correlation between \(d_p\) and \(d_v^h\). In the bottom frame, the open circles show the calculated \(H_{ps}\) using this data in a 120-s time window moving every 60 s, the colored dashed line indicates the reference value from Fig. 3, and the crosses represent \(\sqrt{E(d_v)/E(d_p)}\) in the 120-s windows

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