Articles | Volume 22, issue 3
https://doi.org/10.5194/nhess-22-891-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/nhess-22-891-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Submarine landslide source modeling using the 3D slope stability analysis method for the 2018 Palu, Sulawesi, tsunami
Chatuphorn Somphong
CORRESPONDING AUTHOR
International Research Institute of Disaster
Science, Tohoku University, Miyagi, 9800845, Japan
Anawat Suppasri
International Research Institute of Disaster
Science, Tohoku University, Miyagi, 9800845, Japan
Kwanchai Pakoksung
International Research Institute of Disaster
Science, Tohoku University, Miyagi, 9800845, Japan
Tsuyoshi Nagasawa
Land Infrastructure Department, Tohoku Branch Office, Pacific Consultants Company Limited, Miyagi, 9800811, Japan
Yuya Narita
Land Infrastructure Department, Tohoku Branch Office, Pacific Consultants Company Limited, Miyagi, 9800811, Japan
Ryunosuke Tawatari
Land Infrastructure Department, Tohoku Branch Office, Pacific Consultants Company Limited, Miyagi, 9800811, Japan
Shohei Iwai
Land Infrastructure Department, Tohoku Branch Office, Pacific Consultants Company Limited, Miyagi, 9800811, Japan
Yukio Mabuchi
Land Infrastructure Department, Tohoku Branch Office, Pacific Consultants Company Limited, Miyagi, 9800811, Japan
Saneiki Fujita
Graduate School of Engineering, Tohoku University, Miyagi, 9808579, Japan
Shuji Moriguchi
International Research Institute of Disaster
Science, Tohoku University, Miyagi, 9800845, Japan
Kenjiro Terada
International Research Institute of Disaster
Science, Tohoku University, Miyagi, 9800845, Japan
Cipta Athanasius
Center for Volcanology and Geological Hazard
Mitigation, Geological Agency of Indonesia, Bundung, Indonesia
Fumihiko Imamura
International Research Institute of Disaster
Science, Tohoku University, Miyagi, 9800845, Japan
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Short summary
The majority of past research used hypothesized landslides to simulate tsunamis, but they were still unable to properly explain the observed data. In this study, submarine landslides were simulated by using a slope-failure-theory-based numerical model for the first time. The findings were verified with post-event field observational data. They indicated the potential presence of submarine landslide sources in the southern part of the bay and were consistent with the observational tsunamis.
The majority of past research used hypothesized landslides to simulate tsunamis, but they were...
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