DaisukeIshimura
@daisukeishimura.bsky.social
Associate Prof., Department of Earth Sciences, Chiba Univ. #geomorphology #paleoseismology #tsunamideposits #tephra #driftpumice https://orcid.org/0000-0002-4798-3425 https://sites.google.com/view/ishimuradaisukehomepage/english
Our paper is out! Taya, A., T. Takahashi, D. Ishimura, and M. Yamada. 2026. “Suitable Grain Size for Distinguishing Mainstem and Tributary Gravelly Deposits in Riverbeds and Terraces Using Roundness Image Analysis.” Island Arc35, no. 1: e70051. doi.org/10.1111/iar.....
Island Arc
Roundness of gravel particles is widely used as an indicator of sediment transport, yet its potential for discriminating provenance between mainstem and tributary rivers has not been fully tested. In...
doi.org
この論文の大学からのプレスリリースです www.chiba-u.ac.jp/news/researc...
2016年熊本地震の断層活動履歴を高精度に解明 ―トレンチ調査が明らかにした1.5万年の記録― | 国立大学法人 千葉大学｜Chiba University
chiba-u.ac.jp
Seismica@weareseismica.bsky.social · 4mo ago🧩 The activity history of secondary faults contributes to improving the precision of the main fault's activity history. 🔗 Read more: seismica.library.mcgill.ca/article/view... @daisukeishimura.bsky.social
🧩 The activity history of secondary faults contributes to improving the precision of the main fault's activity history. 🔗 Read more: seismica.library.mcgill.ca/article/view... @daisukeishimura.bsky.social
I've been awarded the SSA's Outstanding Reviewer Award for 2025. www.seismosoc.org/news/ssa-ann...
SSA Announces 2025 Outstanding Reviewers | Seismological Society of America
30 March 2026— Norman Abrahamson of the University of California, Berkeley, Claire Doody of Lawrence Livermore National Lab, Daisuke Ishimura of Chiba University, Andrea Llenos of the U.S. Geological ...
seismosoc.org
Our new paper is out! Ishimura, D., Takahashi, N.O., Tsutsumi, H., Homma, S., Mukoyama, S., Ichihara, T. (2026) Paleoseismic trenching on slip-partitioned surface ruptures associated with the 2016 Kumamoto earthquake. Seismica. seismica.library.mcgill.ca/article/view...
Paleoseismic trenching on slip-partitioned surface ruptures associated with the 2016 Kumamoto earthquake
Surface ruptures appear over a wide area in addition to the primary fault during a Large earthquake like the 2016 Kumamoto earthquake. Although the displacement of such distributed surface ruptures is...
seismica.library.mcgill.ca
Congrats Masuda-san! This study used our app "Rgrains (github.com/keitaroyamad... for measurement Roundness of gravel particles in tsunami deposits!
github.com
DaisukeIshimura@daisukeishimura.bsky.social · 6mo agoFormation process of the gravel‐dominated deposit from the 2011 Tohoku‐oki tsunami in Ofunato, northeastern Japan, inferred by integrating sedimentology and tsunami modelling - Masuda - Sedimentology - Wiley Online Library onlinelibrary.wiley.com/doi/10.1111/...
Formation process of the gravel‐dominated deposit from the 2011 Tohoku‐oki tsunami in Ofunato, northeastern Japan, inferred by integrating sedimentology and tsunami modelling - Masuda - Sedimentology - Wiley Online Library onlinelibrary.wiley.com/doi/10.1111/...
Formation process of the gravel‐dominated deposit from the 2011 Tohoku‐oki tsunami in Ofunato, northeastern Japan, inferred by integrating sedimentology and tsunami modelling
Tsunami deposits serve as geological records of past events and are essential for understanding the occurrence and dynamics of tsunamis. However, conventional research has largely focused on sandy an...
onlinelibrary.wiley.com
Paleoseismology of the Zougahana Fault, Northern Aso Outer Rim, and Its Role in the Tectonics of Northern Kyushu Komura et al. doi.org/10.1785/0120...
Paleoseismology of the Zougahana Fault, Northern Aso Outer Rim, and Its Role in the Tectonics of Northern Kyushu | Bulletin of the Seismological Society of America | GeoScienceWorld
ABSTRACT. The Kumamoto earthquake (MJMA 6.5 and 7.3) occurred on 14 and 16 April 2016, with the epicenter on the Futagawa and Hinagu faults, central
doi.org
Facies analysis provides new insights into event bed deposition in a hadal trench environment - Muthre - Sedimentology - Wiley Online Library onlinelibrary.wiley.com/doi/full/10....
Facies analysis provides new insights into event bed deposition in a hadal trench environment
Hadal trenches preserve exceptional sedimentary archives of past geological events, yet their depositional processes remain poorly constrained. The Japan Trench captures complex earthquake-triggered ...
onlinelibrary.wiley.com
Yamada, K., Ishimura, D., Chikasada, N. et al. Novel mapping approach for coastal boulders using deep learning. Sci Rep (2025). doi.org/10.1038/s415...
Novel mapping approach for coastal boulders using deep learning - Scientific Reports
Scientific Reports - Novel mapping approach for coastal boulders using deep learning
doi.org
Numerical modelling of gravel transportation by a tsunami with the extended XBeach-G Watanabe et al. (2025) doi.org/10.1016/j.ap...
Redirecting
doi.org
Constraining a high-slip offshore fault area during the 2024 Noto Peninsula earthquake using tsunami inundation data and numerical simulations: Coastal Engineering Journal: Vol 67 , No 4 - Get Access www.tandfonline.com/doi/full/10....
Constraining a high-slip offshore fault area during the 2024 Noto Peninsula earthquake using tsunami inundation data and numerical simulations
The 2024 Noto Peninsula earthquake (Mw 7.5) caused significant tsunami inundation along the northeastern coast of the Noto Peninsula in Ishikawa Prefecture, Japan. To investigate the offshore slip ...
tandfonline.com
Establishing a high-resolution late Pleistocene to Holocene tephrostratigraphic framework in central Japan using wetland deposit core records: An attempt to detect cryptotephra from terrestrial records in the productive volcanic arc Watanabe et al. (2025) doi.org/10.1016/j.qu...
Redirecting
doi.org
Comment on “Surface exposure ages of middle–late Pleistocene marine and fluvial terraces along the northern and southern Sanriku coasts, Northeast Japan” by Wakasa et al. (2025) Kaneda et al. (2025) doi.org/10.1016/j.ge...
Redirecting
doi.org
Landscape Signature of Seismogenic Faults in the Off and Onshore Domains of the Noto Peninsula in Japan's Back‐Arc - Malatesta - 2025 - Geophysical Research Letters - Wiley Online Library agupubs.onlinelibrary.wiley.com/doi/10.1029/...
Landscape Signature of Seismogenic Faults in the Off and Onshore Domains of the Noto Peninsula in Japan's Back‐Arc
The faults responsible for the 2024 Mw ${M}_{\mathrm{w}}$ 7.5 Noto Peninsula Earthquake likely started their activity between 326 and 238 ka The nearshore bathymetry of fault-bound coasts records...
agupubs.onlinelibrary.wiley.com