Landscape Signature of Seismogenic Faults in the Off and Onshore Domains of the Noto Peninsula in Japan's Back‐Arc

Abstract The eastern margin of the Sea of Japan is a zone of great seismic and tsunami hazard due to multiple offshore and nearshore reverse faults as shown by the 2024 7.5 Noto Peninsula Earthquake. Here we compare coseismic deformation of the 2024 Noto Peninsula Earthquake with 4,767 individual marine terraces attributed to 16 successive sea‐level stages over the last Myr. This reveals that the earthquake faults started slipping between 326 and 238 ka. The emerged landscape is still adjusting to it while nearshore underwater scarps mark the active faults. Applied to nearby Sado Island, these observations reveal the likely location of an active fault that drives its fast deformation. Active faults defining the edge of uplifting land are likely found in the near shore domain, drowned by the current sea‐level high stand.

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Publication Details

Journal
Geophysical Research Letters
Published
2025-12-19
DOI
https://doi.org/10.1029/2025gl116602
Primary Topic
earthquake and tectonic studies
Type
article
Field-Weighted Citation Impact
0.00

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article

Landscape Signature of Seismogenic Faults in the Off and Onshore Domains of the Noto Peninsula in Japan's Back‐Arc

Kyoko S. Kataoka, Daisuke Ishimura, Naoya Takahashi, Sumiko Tsukamoto et al.
Geophysical Research Letters
earthquake and tectonic studies
article

Landscape Signature of Seismogenic Faults in the Off and Onshore Domains of the Noto Peninsula in Japan's Back‐Arc

Kyoko S. Kataoka, Daisuke Ishimura, Naoya Takahashi, Sumiko Tsukamoto, Boris Gailleton, Yoshiya Iwasa, Shigeru Sueoka, Luca Claude Malatesta, Takuya Nishimura, Tetsuya Komatsu
article en

Abstract

Abstract The eastern margin of the Sea of Japan is a zone of great seismic and tsunami hazard due to multiple offshore and nearshore reverse faults as shown by the 2024 7.5 Noto Peninsula Earthquake. Here we compare coseismic deformation of the 2024 Noto Peninsula Earthquake with 4,767 individual marine terraces attributed to 16 successive sea‐level stages over the last Myr. This reveals that the earthquake faults started slipping between 326 and 238 ka. The emerged landscape is still adjusting to it while nearshore underwater scarps mark the active faults. Applied to nearby Sado Island, these observations reveal the likely location of an active fault that drives its fast deformation. Active faults defining the edge of uplifting land are likely found in the near shore domain, drowned by the current sea‐level high stand.

Geophysical Research LettersVol. 52(24)
Japan Atomic Energy Agency (JP), National Science and Technology Center for Disaster Reduction (TW), Chiba University (JP), Oita University (JP), Tohoku University (JP), Kyoto University (JP), University of Teacher Education Fukuoka (JP), Géosciences Rennes (FR), LIAG Institute for Applied Geophysics (DE), GFZ Helmholtz Centre for Geosciences (DE), Université de Rennes (FR), Tokyo Metropolitan University (JP), Niigata University (JP), University of Tübingen (DE)
Deutsche Forschungsgemeinschaft
Openalex Percentile: Top 57%
earthquake and tectonic studies
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