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タイトル: | Cascading Geological Hazards and Risks of the 2018 Sulawesi Indonesia Earthquake and Sensitivity Analysis of Tsunami Inundation Simulations |
著者: | Goda, Katsuichiro Mori, Nobuhito https://orcid.org/0000-0001-9082-3235 (unconfirmed) Yasuda, Tomohiro Prasetyo, Adi Muhammad, Ario Tsujio, Daiki |
著者名の別形: | 森, 信人 |
キーワード: | earthquake tsunami simulation earthquake damage survey disaster risk management earthquake source characterization |
発行日: | 4-Oct-2019 |
出版者: | Frontiers Media SA |
誌名: | Frontiers in Earth Science |
巻: | 7 |
論文番号: | 261 |
抄録: | Multiple cascading hazards triggered by the 2018 Sulawesi, Indonesia, earthquake caused various compounding consequences. A major strike-slip fault movement with along-dip components resulted in intense ground shaking, liquefaction and lateral spreading, large-scale mudflows, and tsunamis. This paper presents observations of such multi-hazard effects on buildings and infrastructure in areas along Palu Bay, based on field reconnaissance work, and discusses the main causes of the disaster by focusing upon the combined effects of the cascading geological hazards. To evaluate the tsunami risk potential of the strike-slip event, tsunami simulations for the 2018 Sulawesi earthquake are performed by considering different model settings for spatial earthquake slip distribution, rake angle, astronomical tidal effect, and co-seismic ground deformation. The numerical results indicate that the co-seismic rupture of a moment magnitude 7.5 strike-slip earthquake, having notable dip components can generate damaging tsunami waves at coastal locations of Palu Bay. The conclusion has important implications for future tsunami hazard assessments in active seismic regions where major fault systems cut across a bay or into the sea. |
著作権等: | © 2019 Goda, Mori, Yasuda, Prasetyo, Muhammad and Tsujio. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
URI: | http://hdl.handle.net/2433/259828 |
DOI(出版社版): | 10.3389/feart.2019.00261 |
出現コレクション: | 学術雑誌掲載論文等 |
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