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Earth, Planets and Space
Fig. 2 | Earth, Planets and Space

Fig. 2

From: Monitoring volcanic activity with distributed acoustic sensing using the Tongan seafloor telecommunications cable

Fig. 2

Cable depth and DAS records for the entire observation period. a Seafloor depth along the cable route was derived from the ETOPO Global Relief Model (NOAA 2022). b DAS records plotted against length of cable from the landing station at Nuku’alofa, Tonga. DAS strain waveforms were band-pass filtered between 1 and 20 Hz and their absolute amplitudes are plotted at log scale

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