Overview

• Researchers from Tohoku University published the analysis on October 15, 2025, in a US science journal.
• The study indicates a large, solidified magma body near the hypocenter accumulated strain and then failed, amplifying the earthquake.
• The finding offers a mechanism to explain why the 2024 Noto Peninsula event grew larger than expected from fault slip alone.
• Nishinippon Shimbun me reported the study as a paywalled article, and NHK also summarized the research.
• The coverage notes potential implications for seismic‑hazard assessments near ancient magmatic bodies, while the excerpt did not specify the journal’s name or methods in detail.