Fig. 1: Air-pressure and tide-gauge in Tonga.
From: A coupled atmosphere-ocean source mechanism was a predictor of the 2022 Tonga volcanic tsunami
a Location of the HTHH volcano. b Close-up of the local bathymetry, with the red diamond indicating the location of the Tonga tide-gauge. c Air-pressure data from Tonga, showing three distinct troughs corresponding to significant eruption cycles starting at 4:26, 5:01, and 5:46, each lasting approximately 20 minutes. d Tide-gauge data from Tonga (nkfa2 station) compared with air pressure-converted sea level (magenta, by Eqs. (1), (2)). e Tide-gauge data from Tonga (nkfa station) compared with air pressure-converted sea level (magenta, by Eqs. (1), (2)). Note that the nkfa tide gauge (green) malfunctioned at 5:25, with red circles indicating data points outside the expected range, likely due to the malfunction.
