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2024-01-01, M7.5, Japan

On the 1st of January, 2024, a M7.5 earthquake occurred on the west coast of Japan, at a depth of 10 km (see map below). A series of aftershocks have also occurred. At the time of writing 48 deaths have been reported with major damage to roads and houses on the the west side of the island.

Japan experiences high seismic activity due to the subduction of the Pacific Plate beneath its eastern coast. However, the recent event occurred along the less seismically active western coast, where certain shallow faults accommodate broader plate movements. Shallow earthquakes, such as this one, typically lead to more pronounced surface ground shaking compared to deeper earthquakes, as the energy is released closer to the Earth’s surface.

The seismic stations of the Irish National Seismic Network (INSN), which is managed by the geophysics section in the School of Cosmic Physics at DIAS, detected the M7.5 earthquake, see figure below.

More information is available at the below resources:

https://earthquake.usgs.gov/earthquakes/eventpage/us6000m0xl/executive?utm_medium=email&utm_source=ENS&utm_campaign=realtime

https://www.data.jma.go.jp/multi/quake/quake_detail.html?eventID=20240101162429&lang=en

Past Seismograms
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Past Spectrograms
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IMAY - Mayo