Probabilistic modelling of rainfall induced landslide hazard assessment
To evaluate the frequency and distribution of landslides hazards over Japan, this study uses a probabilistic model based on multiple logistic regression analysis. Study particular concerns several important physical parameters such as hydraulic parameters, geographical parameters and the geological...
| Main Authors: | , , |
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| Format: | Journal Article |
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Copernicus GmbH
2010
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| Online Access: | http://hdl.handle.net/20.500.11937/21494 |
| _version_ | 1848750606134542336 |
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| author | Kawagoe, S. Kazama, S. Sarukkalige, Priyantha Ranjan |
| author_facet | Kawagoe, S. Kazama, S. Sarukkalige, Priyantha Ranjan |
| author_sort | Kawagoe, S. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | To evaluate the frequency and distribution of landslides hazards over Japan, this study uses a probabilistic model based on multiple logistic regression analysis. Study particular concerns several important physical parameters such as hydraulic parameters, geographical parameters and the geological parameters which are considered to be influential in the occurrence of landslides. Sensitivity analysis confirmed that hydrological parameter (hydraulic gradient) is the most influential factor in the occurrence of landslides. Therefore, the hydraulic gradient is used as the main hydraulic parameter; dynamic factor which includes the effect of heavy rainfall and their return period. Using the constructed spatial data-sets, a multiple logistic regression model is applied and landslide hazard probability maps are produced showing the spatial-temporal distribution of landslide hazard probability over Japan. To represent the landslide hazard in different temporal scales, extreme precipitation in 5 years, 30 years, and 100 years return periods are used for the evaluation. The results show that the highest landslide hazard probability exists in the mountain ranges on the western side of Japan (Japan Sea side), including the Hida and Kiso, Iide and the Asahi mountainous range, the south side of Chugoku mountainous range, the south side of Kyusu mountainous and the Dewa mountainous range and the Hokuriku region. The developed landslide hazard probability maps in this study will assist authorities, policy makers and decision makers, who are responsible for infrastructural planning and development, as they can identify landslide-susceptible areas and thus decrease landslide damage through proper preparation. |
| first_indexed | 2025-11-14T07:39:30Z |
| format | Journal Article |
| id | curtin-20.500.11937-21494 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:39:30Z |
| publishDate | 2010 |
| publisher | Copernicus GmbH |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-214942017-09-13T15:59:54Z Probabilistic modelling of rainfall induced landslide hazard assessment Kawagoe, S. Kazama, S. Sarukkalige, Priyantha Ranjan To evaluate the frequency and distribution of landslides hazards over Japan, this study uses a probabilistic model based on multiple logistic regression analysis. Study particular concerns several important physical parameters such as hydraulic parameters, geographical parameters and the geological parameters which are considered to be influential in the occurrence of landslides. Sensitivity analysis confirmed that hydrological parameter (hydraulic gradient) is the most influential factor in the occurrence of landslides. Therefore, the hydraulic gradient is used as the main hydraulic parameter; dynamic factor which includes the effect of heavy rainfall and their return period. Using the constructed spatial data-sets, a multiple logistic regression model is applied and landslide hazard probability maps are produced showing the spatial-temporal distribution of landslide hazard probability over Japan. To represent the landslide hazard in different temporal scales, extreme precipitation in 5 years, 30 years, and 100 years return periods are used for the evaluation. The results show that the highest landslide hazard probability exists in the mountain ranges on the western side of Japan (Japan Sea side), including the Hida and Kiso, Iide and the Asahi mountainous range, the south side of Chugoku mountainous range, the south side of Kyusu mountainous and the Dewa mountainous range and the Hokuriku region. The developed landslide hazard probability maps in this study will assist authorities, policy makers and decision makers, who are responsible for infrastructural planning and development, as they can identify landslide-susceptible areas and thus decrease landslide damage through proper preparation. 2010 Journal Article http://hdl.handle.net/20.500.11937/21494 10.5194/hess-14-1047-2010 Copernicus GmbH fulltext |
| spellingShingle | Kawagoe, S. Kazama, S. Sarukkalige, Priyantha Ranjan Probabilistic modelling of rainfall induced landslide hazard assessment |
| title | Probabilistic modelling of rainfall induced landslide hazard assessment |
| title_full | Probabilistic modelling of rainfall induced landslide hazard assessment |
| title_fullStr | Probabilistic modelling of rainfall induced landslide hazard assessment |
| title_full_unstemmed | Probabilistic modelling of rainfall induced landslide hazard assessment |
| title_short | Probabilistic modelling of rainfall induced landslide hazard assessment |
| title_sort | probabilistic modelling of rainfall induced landslide hazard assessment |
| url | http://hdl.handle.net/20.500.11937/21494 |