Limits RegistryPUBLIC RECORD
Limits RegistryThe magnitude 7.9 Ogasawara (Bonin) Islands earthquake of 30 May 2015 ruptured at about 680 km depth beneath the Pacific seafloor near Japan — the deepest large earthquake ever well recorded, isolated well below the main seismic zone of the subducting Pacific slab. A reported 751 km-deep aftershock would be deeper still, but a 2025 reanalysis did not confirm it.
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The magnitude 7.9 Ogasawara (Bonin) Islands earthquake of 30 May 2015 ruptured at about 680 km depth beneath the Pacific seafloor near Japan — the deepest large earthquake ever well recorded, isolated well below the main seismic zone of the subducting Pacific slab. A reported 751 km-deep aftershock would be deeper still, but a 2025 reanalysis did not confirm it.
The greatest focal depth of a well-located earthquake of magnitude 7 or greater.
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Permanent ID limitsregistry.com/limits/LR-DEEPEST-MAJOR-EARTHQUAKE
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Limits Registry. LR-DEEPEST-MAJOR-EARTHQUAKE. Deepest major earthquake recorded. 2026.