Usami K, Ikehara K, Kanamatsu T, McHugh CM (In Press) Supercycle in great earthquake recurrence along the Japan Trench over the last 4000 years. Geoscience Letters.
Ikehara K, Usami K, Kanamatsu T, Danhara T, Yamashita T (2017) Three important Holocene tephras off the Pacific coast of the Tohoku region, Northeast Japan: Implications for correlating onshore and offshore event deposits. Quaternary International 456: 138|153.
Ikehara K, Usami K, Kanamatsu T, Danhara T, Yamashita T (In Press) Three important Holocene tephras off the Pacific coast of the Tohoku region, Northeast Japan: Implications for correlating onshore and offshore event deposits. Quat Int.
Ikehara K, Usami K, Kanamatsu T, Arai K, Yamaguchi A, Fukuchi R (2017) Spatial variability in sediment lithology and sedimentary processes along the Japan Trench: Use of deep-sea turbidite records to reconstruct past large earthquakes. In: Tsunamis: Geology, Hazards and Risks, Geological Society, London, Special Publications, 456, https://doi.org/10.1144/SP456.9.
Kanamatsu T, Usami K, McHugh CMG, Ikehara K (2017) High-resolution chronology of sediment below CCD based on Holocene paleomagnetic secular variations in the Tohoku-oki earthquake rupture zone. Geochem Geophys Geosys 18: doi:10.1002/2017GC006878.
Hsiung K-H, Kanamatsu T, Ikehara K, Shiraishi K, Horng C-S, Usami K (2017) Morpho-sedimentary features and sediment dispersal systems of the southwest end of the Ryukyu Trench: a source-to-sink approach Geo-Marine Letters (Accepted)
Usami K, Ikehara K,. Jenkins RG, Ashi J (2017) Benthic foraminiferal evidence of deep-sea sediment transport by the 2011 Tohoku-oki earthquake and tsunami. Marine Geology 384, 214|224.
Ikehara K, Kanamatsu T, Nagahashi Y, Strasser M, Fink H, Usami K, Irino T, Wefer G (2016) Documenting large earthquakes similar to the 2011 Tohoku-oki earthquake from sediments deposited in the Japan Trench over the past 1500 years. Earth and Planetary Science Letters 445, 48|56.
McHugh CM, Kanamatsu T, Seeber L, Bopp R, Cormier M-H, Usami K (2016) Remobilization of surficial slope sediment triggered by the AD 2011 Mw 9 Tohoku-Oki earthquake and tsunami along the Japan Trench. Geology 44: doi:10.1130/G37650.1.
Ikehara K, Irino T, Usami K, Jenkins RG, Omura A, Ashi J (2014) Possible submarine tsunami deposits on the outer shelf of Sendai Bay, Japan resulting from the 2011 earthquake and tsunami off the Pacific coast of Tohoku. Marine Geology 358, 120|127.
Usami K, Ohi T, Hasegawa S, Ikehara K (2013) Foraminiferal records of bottom-water oxygenation and surface-water productivity in the southern Japan Sea during 160|15 ka: Associations with insolation changes. Marine Micropaleontology 101, 10|27.