Map of South Pacific

Red stars in the map represent the epicenters of the magnitude-7.3, 7.4 and 8.1 earthquakes that occurred on Mach 4, 2021. The blue arrow represents the direction of motion of the Pacific Plate relative to the Australian Plate. The inset figure shows a seismogram for that day, recorded by station ARMA.AU in Australia, highlighting the timing of the three earthquakes.

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