Supershear Shock—A Rare and Hazardous Seismic Phenomenon

A devastating earthquake with a magnitude of 7.7 on the Richter scale struck Myanmar, near Mandalay in March 2025. Merely twelve minutes later, a second major earthquake of magnitude 6.7 occurred about 31 km to the south of the initial epicentre. Both vents were shallow, originating at around 10 km (6 miles) depth, and triggered strong aftershocks in subsequent days. These earthquakes caused severe damage locally and were felt as far as 1,000 km away in Bangkok, Thailand. According to satellite data from the National Aeronautics and Space Administration (NASA) and the European Space Agency (ESA), the earthquakes caused ground shifts exceeding 6 metres (approx. 20 feet) along the Sagaing Fault.

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