Proceedings of the International Ocean Drilling Programme
Proceedings of the International Ocean Drilling Programme
Proceedings of the International Ocean Drilling Programme
Articles | Volume 503
Articles | Volume 503
https://doi.org/10.5194/piodp-503-1-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/piodp-503-1-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 503
Scientific prospectus
 | 
15 Dec 2025
Scientific prospectus |  | 15 Dec 2025

IODP3 Expedition 503 “Hadal Trench Tsunamigenic Slip History” Scientific Prospectus

Ken Ikehara, Michael Strasser, and Lena Maeda

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Short summary
Unexpected shallow and large slip on the plate boundary fault during the 2011 Tōhoku-oki earthquake contributed to a large tsunami. However, our knowledge on the past history of such slips is limited due to the long recurrence interval of the events. IODP3 Expedition 503 recovers the whole trench-fill sequence in the central Japan Trench to understand the nature and recurrence of hadal trench tsunamigenic slips and their earthquake-related carbon accumulation and element cycles.
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