[H-CG17] Tsunami science: learn from the past and mitigate future disasters

Fri. May 29, 2026 3:30 PM - 5:00 PM Exhibition Hall Special Setting (4) (Exhibition Hall 7&8, Makuhari Messe)

Chairperson:Yamada Masaki(Department of Geology, Faculty of Science, Shinshu University), Shimada Yumi(National Institute of Advanced Industrial Science and Technology)

The disastrous tsunamis caused by the 2004 Sumatra earthquake and the 2011 Tohoku earthquake accelerated tsunami researches in various fields. In recent years, researches on non-seismic tsunamis have also been actively conducted, including landslide tsunamis from the 2018 Sulawesi earthquake and the Anak Krakatau volcanic eruption, as well as tsunami-like waves generated by the atmospheric pressure waves from the 2022 Hunga Tonga-Hunga Ha'apai volcanic eruption. This session covers tsunamis generated by any mechanisms and welcomes a wide range of presentations from the fields of science (e.g., geology and geophysics), engineering, and disaster prevention. This includes researches on tsunami generation and propagation theory, studies utilizing observation data such as instrumental tsunami records and tsunami deposits (both modern and paleo), and prediction and risk assessment researches aimed at mitigating future tsunami disasters.

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3:30 PM - 3:45 PM

[HCG17-19] Geochemical signatures can help provide a better estimate of the inundation limit of past tsunamis

★Invited Papers

*Catherine Chague^1,2, Daisuke Sugawara³, Shigehiro Fujino⁴, Patricia Gadd⁵ (1. UNSW Sydney, Sydney NSW, Australia, 2. Earth Sciences NZ, Christchurch, New Zealand, 3. IRIDeS, Tohoku University, Sendai, Japan, 4. University of Tsukuba, Tsukuba, Japan, 5. ANSTO, Lucas Heights NSW, Australia)

3:45 PM - 4:00 PM

[HCG17-20] Post-depositional geochemical characteristics of tsunami deposits during the first year after the 2024 Noto Peninsula tsunami

*Miyuki Kikuchi¹, Masaki Yamada¹, Gen Sasamoto¹, Yu Saitoh² (1. Shinshu University, 2. Tokushima University)

4:00 PM - 4:15 PM

[HCG17-21] Long-Term Fate of Tsunami Deposits: Evidence from the 2004 Indian Ocean Tsunami Revisited After Two Decades

*Witold Szczucinski¹, Supawit Yawsangratt², Robert Jagodziński², Apichai Kanchanapant², Visuttipong Kererattanasathian², Sakda Khundee², Mikołaj Kokociński¹, Jędrzej M. Majewski¹, Przemysław Niedzielski¹, Surachet Saengsawang², Tanad Soisa², Tanit Srisonsak² (1. Adam Mickiewicz University, Poznan, Poland, 2. Department of Mineral Resources, Bangkok, Thailand)

4:15 PM - 4:30 PM

[HCG17-22] Historical tsunami deposits at islands in Sendai Bay

*Hakumura Shu¹, Daisuke Sugawara¹, Takashi Ishizawa¹, Morikatsu Takahashi, Jyunichi Aihara² (1. Tohoku University, 2. Sicán National Museum)

4:30 PM - 4:45 PM

[HCG17-23] Nonlinear inversion of tsunami deposit thickness: Assessing dependency to survey site distribution through numerical experiments

*Hidetoshi Masuda¹, Daisuke Sugawara² (1. Department of Earth Science, Graduate School of Science, Tohoku University, 2. International Research Institute of Disaster Science (IRIDeS), Tohoku University)

4:45 PM - 5:00 PM

[HCG17-24] Sandy shoreline geomorphology and its functions for the geological reconstruction of tsunami events

★Invited Papers

*Toru Tamura¹ (1. Institute of Geology and Geoinformation Geological Survey of Japan, AIST)

Session information

[H-CG17] Tsunami science: learn from the past and mitigate future disasters

[HCG17-19] Geochemical signatures can help provide a better estimate of the inundation limit of past tsunamis

★Invited Papers

[HCG17-20] Post-depositional geochemical characteristics of tsunami deposits during the first year after the 2024 Noto Peninsula tsunami

[HCG17-21] Long-Term Fate of Tsunami Deposits: Evidence from the 2004 Indian Ocean Tsunami Revisited After Two Decades

[HCG17-22] Historical tsunami deposits at islands in Sendai Bay

[HCG17-23] Nonlinear inversion of tsunami deposit thickness: Assessing dependency to survey site distribution through numerical experiments

[HCG17-24] Sandy shoreline geomorphology and its functions for the geological reconstruction of tsunami events

★Invited Papers

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