Jisho

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きょだいじしん 巨大地震
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Noun
1. massive earthquake; megaquake​
Wikipedia definition
2. Megathrust earthquake​Megathrust earthquakes occur at subduction zones at destructive plate boundaries, where one tectonic plate is subducted (forced underneath) by another. Due to the shallow dip of the plate boundary, which causes large sections to get stuck, these earthquakes are among the world's largest, with moment magnitudes that can exceed 9.0. Since 1900, all six earthquakes of magnitude 9.0 or greater have been megathrust earthquakes.
Read “Megathrust earthquake” on English Wikipedia
Read “巨大地震” on Japanese Wikipedia
Read “Megathrust earthquake” on DBpedia

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