Article
Multidisciplinary Sciences
Piero Bellanova, Mike Frenken, Yuichi Nishimura, Jan Schwarzbauer, Klaus Reicherter
Summary: The 2011 Tohoku-oki tsunami caused massive damage along the northern Japanese Aomori coast, with the coastal control area being inundated up to 550 m inland. A previously undocumented woody-organic tsunami deposit was discovered, improving understanding of the documented part of the tsunami inundation and reducing underestimation.
SCIENTIFIC REPORTS
(2021)
Article
Engineering, Marine
Bjorn R. Robke, Tim Leijnse, Gundula Winter, Maarten van Ormondt, Joana van Nieuwkoop, Reimer de Graaff
Summary: This study demonstrates the successful application of D-FLOW Flexible Mesh (FM) and SFINCS models, along with the Delft Dashboard Tsunami Toolbox, in numerically simulating the 2011 Tohoku tsunami in Japan. The models accurately reproduced the tsunami propagation and inundation, providing effective options for future tsunami simulation research.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Geosciences, Multidisciplinary
Tetsuya Shinozaki, Yuki Sawai, Minoru Ikehara, Dan Matsumoto, Yumi Shimada, Koichiro Tanigawa, Toru Tamura
Summary: The distribution of sandy tsunami deposits may underestimate the true extents of tsunami inundation areas. A study on the 2011 Tohoku-oki tsunami deposit in northern Japan reveals that it is a landward-thinning layer comprising interbedded sand and soil. Sediment samples from the inundated area contain organic compounds derived from Pinus trees in the forest. This suggests that changes in the concentrations of environment-specific biological proxies in the sedimentary column may record tsunami inundation.
PROGRESS IN EARTH AND PLANETARY SCIENCE
(2022)
Article
Multidisciplinary Sciences
Shohei Iwai, Kazuhisa Goto
Summary: This study collected the first comprehensive dataset for the Sanriku coast of Japan, revealing that the 2011 Tohoku-oki tsunami moved approximately 1500 tons of boulders and concrete blocks with a flow depth of around 28 meters. It was also found that most boulders that remained unmoved were influenced more by local settings rather than their heavy weights. The threshold for moved/unmoved boulders was estimated against the flow depth, indicating that flow depths of over 20 meters are needed to move boulders weighing over 1000 tons.
SCIENTIFIC REPORTS
(2021)
Article
Geosciences, Multidisciplinary
Hidetoshi Masuda, Daisuke Sugawara, Tomoya Abe, Kazuhisa Goto
Summary: A quantitative understanding of paleotsunamis is an important issue in tsunami sedimentology. Numerical models are used to reconstruct paleotsunami events based on onshore tsunami deposits. This study examines the potential and limitations of deposit-based tsunami source estimation using the 2011 Tohoku-oki tsunami deposit data in Japan. The results show that high-quality datasets of tsunami deposits can improve the accuracy of paleotsunami source estimation.
PROGRESS IN EARTH AND PLANETARY SCIENCE
(2022)
Article
Geology
Yasutaka Iijima, Kazuhisa Goto, Daisuke Sugawara, Tomoya Abe
Summary: This study focuses on the relationship between artificial structures, sedimentary structures, and hydrodynamics of the 2011 Tohoku-oki tsunami. Field observations showed that coastal dikes and roadways significantly influenced the source, thickness, and sedimentary structures of the tsunami deposits, providing insight into the depositional processes.
SEDIMENTARY GEOLOGY
(2021)
Article
Geography, Physical
Haruki Imura, Kazuhisa Goto, Kenta Minamidate, Naoto Koiwa
Summary: This study investigated the topographic changes caused by the 2011 Tohoku-oki tsunami and other natural and artificial activities at the Osuka coast in Aomori prefecture, Japan. The findings showed that the tsunami generated significant topographic changes, which were preserved underground even after 10 years. However, the dynamic movement of the dunes was caused by deforestation rather than the tsunami effects. This highlights the importance of considering both natural and artificial factors in coastal geomorphology.
EARTH SURFACE PROCESSES AND LANDFORMS
(2023)
Article
Multidisciplinary Sciences
Ken Ikehara, Tomohisa Irino, Yoshiki Saito
Summary: The study compared surface sediments before and after the 2011 Tohoku-oki tsunami on the Sendai shelf and found that both sandy and muddy sediments were significantly reworked by the tsunami. Part of the resuspended mud moved offshore to the slope area as turbidity currents.
SCIENTIFIC REPORTS
(2021)
Review
Geosciences, Multidisciplinary
Kazuhisa Goto, Takashi Ishizawa, Yuichi Ebina, Fumihiko Imamura, Shosuke Sato, Keiko Udo
Summary: The 2011 Tohoku-oki earthquake and tsunami had devastating effects on coastal environments, but many of these impacts have since naturally or artificially recovered. Despite efforts by the government to prepare for future events, there is still uncertainty in forecasting tsunamis and raising public awareness. The challenges of predicting low-frequency tsunami events and fostering a social consensus for preparedness remain unresolved since the 2011 event.
EARTH-SCIENCE REVIEWS
(2021)
Article
Geosciences, Multidisciplinary
Mike Frenken, Piero Bellanova, Yuichi Nishimura, Klaus Reicherter, Jan Schwarzbauer
Summary: The 2011 Tohoku-oki tsunami left a characteristic geochemical signature in the sediments of the Misawa harbor on the Aomori coastline, with specific compounds illustrating different emission sources and distribution during the tsunami. Petrogenic-derived markers provide information about tsunami-related destruction, sewage-derived compounds were widely distributed from a diffuse source, and old burden markers signal erosion and rearrangement of contaminants prior to the tsunami.
Article
Geosciences, Multidisciplinary
Ryuichi Kanai, Masashi Kamogawa, Toshiyasu Nagao, Alan Smith, Serge Guillas
Summary: In this study, a new method is developed using satellite observations and Gaussian process regression to accurately analyze the decrease in total electron content (TEC) in the ionosphere after a tsunami. The method has high reliability and global applicability.
NATURAL HAZARDS AND EARTH SYSTEM SCIENCES
(2022)
Article
Geosciences, Multidisciplinary
Dan Matsumoto, Yuki Sawai, Koichiro Tanigawa, Yuichi Namegaya, Masanobu Shishikura, Kyoko Kagohara, Osamu Fujiwara, Tetsuya Shinozaki
Summary: This paper documents the sedimentary characteristics and observed inundation depths of the widespread deposits associated with the 2011 Tohoku-oki tsunami in northern Japan. The analysis reveals that the tsunami deposits are composed of sheetlike sandy beds with landward-thinning and landward-fining trends accompanied by a landward increase in mud content. These findings provide valuable insights for the identification of paleo-tsunami deposits and mathematical analyses of tsunami hydraulic conditions.
PROGRESS IN EARTH AND PLANETARY SCIENCE
(2023)
Article
Geochemistry & Geophysics
V. Klausner, H. G. Macedo, A. Prestes
Summary: This study documents magnetic disturbances during the Tohoku-Oki tsunami in 2011 using a network of ground-based magnetometers. The study reveals the presence of ahead-of-tsunami magnetic disturbances (ATMDs) that appear prior to the arrival of the tsunami and have unique propagation characteristics. These disturbances can be used for early warning of tsunamis.
PURE AND APPLIED GEOPHYSICS
(2022)
Article
Geosciences, Multidisciplinary
Hirokuni Abe, Noriko Kawamura, Naoto Ishikawa, Tetsu Kogiso
Summary: This study investigates tsunami records preserved in marine sediments in Sendai Bay, Japan after the 2011 Tohoku earthquake. The results show changes in sediment composition and concentration of metallic elements after the tsunami. The study also suggests that a subsequent typhoon and flood supplied terrestrial organic matter to the sediments.
Article
Geology
Ken Ikehara, Kazuko Usami, Tomohisa Irino, Akiko Omura, Robert G. Jenkins, Juichiro Ashi
Summary: Deep-sea turbidite deposits are valuable tools for submarine paleoseismology. By analyzing the event deposits from the 2011 Tohoku-oki earthquake and tsunami, researchers found that the deposits originated from multiple sources, indicating widespread seafloor disturbances. Different types of event deposits reflect varying sediment transport pathways, with limited long-distance transport observed despite the wide spatial distribution.
SEDIMENTARY GEOLOGY
(2021)
Article
Geochemistry & Geophysics
Yu Chang, Kazuhisa Goto, Yasuhito Sekine, Eiichi Tajika
METEORITICS & PLANETARY SCIENCE
(2018)
Article
Geology
Masashi Watanabe, Kazuhisa Goto, Jeremy D. Bricker, Fumihiko Imamura
SEDIMENTARY GEOLOGY
(2018)
Article
Geology
Catherine Chague, Daisuke Sugawara, Kazuhisa Goto, James Goff, Walter Dudley, Patricia Gadd
SEDIMENTARY GEOLOGY
(2018)
Article
Geology
Takashi Ishizawa, Kazuhisa Goto, Yusuke Yokoyama, Yosuke Miyairi, Chikako Sawada, Keita Takada
SEDIMENTARY GEOLOGY
(2018)
Article
Geosciences, Multidisciplinary
J. Goff, K. Goto, C. Chague, M. Watanabe, P. S. Gadd, D. N. King
Article
Multidisciplinary Sciences
Christopher M. Lowery, Timothy J. Bralower, Jeremy D. Owens, Francisco J. Rodriguez-Tovar, Heather Jones, Jan Smit, Michael T. Whalen, Phillipe Claeys, Kenneth Farley, Sean P. S. Gulick, Joanna V. Morgan, Sophie Green, Elise Chenot, Gail L. Christeson, Charles S. Cockell, Marco J. L. Coolen, Ludovic Ferriere, Catalina Gebhardt, Kazuhisa Goto, David A. Kring, Johanna Lofi, Ruben Ocampo-Torres, Ligia Perez-Cruz, Annemarie E. Pickersgill, Michael H. Poelchau, Auriol S. P. Rae, Cornelia Rasmussen, Mario Rebolledo-Vieyra, Ulrich Riller, Honami Sato, Sonia M. Tikoo, Naotaka Tomioka, Jaime Urrutia-Fucugauchi, Johan Vellekoop, Axel Wittmann, Long Xiao, Kosei E. Yamaguchi, William Zylberman
Review
Geosciences, Multidisciplinary
Takashi Ishizawa, Kazuhisa Goto, Yusuke Yokoyama, James Goff
EARTH-SCIENCE REVIEWS
(2020)
Article
Geosciences, Multidisciplinary
Tomoya Abe, Kazuhisa Goto, Daisuke Sugawara
PROGRESS IN EARTH AND PLANETARY SCIENCE
(2020)
Article
Geosciences, Multidisciplinary
Rimali Mitra, Hajime Naruse, Tomoya Abe
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2020)
Article
Geosciences, Multidisciplinary
Ayumu Miyakawa, Tomoya Abe, Tatsuya Sumita, Makoto Otsubo
PROGRESS IN EARTH AND PLANETARY SCIENCE
(2020)
Article
Geosciences, Multidisciplinary
Ryosuke Fujita, Kazuhisa Goto, Yasufumi Iryu, Tomoya Abe
PROGRESS IN EARTH AND PLANETARY SCIENCE
(2020)
Article
Geology
Yasutaka Iijima, Kazuhisa Goto, Daisuke Sugawara, Tomoya Abe
Summary: This study focuses on the relationship between artificial structures, sedimentary structures, and hydrodynamics of the 2011 Tohoku-oki tsunami. Field observations showed that coastal dikes and roadways significantly influenced the source, thickness, and sedimentary structures of the tsunami deposits, providing insight into the depositional processes.
SEDIMENTARY GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Masashi Watanabe, Kazuhisa Goto, Volker Roeber, Fumihiko Imamura
Summary: Tsunami and storm deposits are used to estimate inundation zones and frequency intervals of extreme waves, with factors such as topography slope being key in influencing the extent of inundation and inland distribution. The presence of onshore sediment sources is crucial for estimating the maximum extent of storm deposits. Parameters like grain size and wave height mainly control sediment deposit volume over land under tsunami and storm wave conditions.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2021)
Article
Geosciences, Multidisciplinary
Hidetoshi Masuda, Daisuke Sugawara, Tomoya Abe, Kazuhisa Goto
Summary: A quantitative understanding of paleotsunamis is an important issue in tsunami sedimentology. Numerical models are used to reconstruct paleotsunami events based on onshore tsunami deposits. This study examines the potential and limitations of deposit-based tsunami source estimation using the 2011 Tohoku-oki tsunami deposit data in Japan. The results show that high-quality datasets of tsunami deposits can improve the accuracy of paleotsunami source estimation.
PROGRESS IN EARTH AND PLANETARY SCIENCE
(2022)
Article
Geography, Physical
Hiraku Takeda, Kazuhisa Goto, James Goff, Hideaki Matsumoto, Daisuke Sugawara
EARTH SURFACE PROCESSES AND LANDFORMS
(2018)