Earthquake-induced soil landslides: volume estimates and uncertainties with the existing scaling exponents
Abstract Quantifying landslide volumes in earthquake affected areas is critical to understand the orogenic processes and their surface effects at different spatio-temporal scales. Here, we build an accurate scaling relationship to estimate the volume of shallow soil landslides based on 1 m pre- and...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-05-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-35088-6 |
| _version_ | 1797822883200761856 |
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| author | Ali P. Yunus Chen Xinyu Filippo Catani Srikrishnan Siva Subramaniam Xuanmei Fan Dou Jie K. S. Sajinkumar Ankita Gupta Ram Avtar |
| author_facet | Ali P. Yunus Chen Xinyu Filippo Catani Srikrishnan Siva Subramaniam Xuanmei Fan Dou Jie K. S. Sajinkumar Ankita Gupta Ram Avtar |
| author_sort | Ali P. Yunus |
| collection | DOAJ |
| description | Abstract Quantifying landslide volumes in earthquake affected areas is critical to understand the orogenic processes and their surface effects at different spatio-temporal scales. Here, we build an accurate scaling relationship to estimate the volume of shallow soil landslides based on 1 m pre- and post-event LiDAR elevation models. On compiling an inventory of 1719 landslides for 2018 Mw 6.6 Hokkaido-Iburi earthquake epicentral region, we find that the volume of soil landslides can be estimated by γ = 1.15. The total volume of eroded debris from Hokkaido-Iburi catchments based on this new scaling relationship is estimated as 64–72 million m3. Based on the GNSS data approximation, we noticed that the co-seismic uplift volume is smaller than the eroded volume, suggesting that frequent large earthquakes (and rainfall extremes) may be counterbalancing the topographic uplift through erosion by landslides, especially in humid landscapes such as Japan, where soil properties are rather weak. |
| first_indexed | 2024-03-13T10:15:53Z |
| format | Article |
| id | doaj.art-8a659aeb85fe4e9db784ecba1848ca6b |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-03-13T10:15:53Z |
| publishDate | 2023-05-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-8a659aeb85fe4e9db784ecba1848ca6b2023-05-21T11:15:26ZengNature PortfolioScientific Reports2045-23222023-05-0113111010.1038/s41598-023-35088-6Earthquake-induced soil landslides: volume estimates and uncertainties with the existing scaling exponentsAli P. Yunus0Chen Xinyu1Filippo Catani2Srikrishnan Siva Subramaniam3Xuanmei Fan4Dou Jie5K. S. Sajinkumar6Ankita Gupta7Ram Avtar8Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research MohaliFaculty of Environmental Earth Science, Hokkaido UniversityDepartment of Geosciences, University of PadovaCentre of Excellence in Disaster Mitigation and Management, Indian Institute of Technology RoorkeeState Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of TechnologyThree Gorges Research Center for Geohazards, The China University of GeosciencesDepartment of Geology, University of KeralaFaculty of Environmental Earth Science, Hokkaido UniversityFaculty of Environmental Earth Science, Hokkaido UniversityAbstract Quantifying landslide volumes in earthquake affected areas is critical to understand the orogenic processes and their surface effects at different spatio-temporal scales. Here, we build an accurate scaling relationship to estimate the volume of shallow soil landslides based on 1 m pre- and post-event LiDAR elevation models. On compiling an inventory of 1719 landslides for 2018 Mw 6.6 Hokkaido-Iburi earthquake epicentral region, we find that the volume of soil landslides can be estimated by γ = 1.15. The total volume of eroded debris from Hokkaido-Iburi catchments based on this new scaling relationship is estimated as 64–72 million m3. Based on the GNSS data approximation, we noticed that the co-seismic uplift volume is smaller than the eroded volume, suggesting that frequent large earthquakes (and rainfall extremes) may be counterbalancing the topographic uplift through erosion by landslides, especially in humid landscapes such as Japan, where soil properties are rather weak.https://doi.org/10.1038/s41598-023-35088-6 |
| spellingShingle | Ali P. Yunus Chen Xinyu Filippo Catani Srikrishnan Siva Subramaniam Xuanmei Fan Dou Jie K. S. Sajinkumar Ankita Gupta Ram Avtar Earthquake-induced soil landslides: volume estimates and uncertainties with the existing scaling exponents Scientific Reports |
| title | Earthquake-induced soil landslides: volume estimates and uncertainties with the existing scaling exponents |
| title_full | Earthquake-induced soil landslides: volume estimates and uncertainties with the existing scaling exponents |
| title_fullStr | Earthquake-induced soil landslides: volume estimates and uncertainties with the existing scaling exponents |
| title_full_unstemmed | Earthquake-induced soil landslides: volume estimates and uncertainties with the existing scaling exponents |
| title_short | Earthquake-induced soil landslides: volume estimates and uncertainties with the existing scaling exponents |
| title_sort | earthquake induced soil landslides volume estimates and uncertainties with the existing scaling exponents |
| url | https://doi.org/10.1038/s41598-023-35088-6 |
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