[1]HE Qian,WANG Ming,LIU Kai.Assessement on Earthquake-Triggered Landslide Susceptibility Based on Logistic Regression and MCMC Method[J].Research of Soil and Water Conservation,2022,29(03):396-403+410.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
29
Number of periods:
2022 03
Page number:
396-403+410
Column:
Public date:
2022-04-20
- Title:
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Assessement on Earthquake-Triggered Landslide Susceptibility Based on Logistic Regression and MCMC Method
- Author(s):
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HE Qian, WANG Ming, LIU Kai
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(1.State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing 100875, China; 2.Academy of Disaster Reduction and Emergency Management, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China; 3.Key Laboratory of Environmental Change and Natural Disasters, ministry of Education, Beijing Normal University, Beijing 100875, China)
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- Keywords:
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Markov Chain Monte Carlo; Logistic regression; uncertainty; earthquake-induced landslide; landslide susceptibility
- CLC:
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P642.22
- DOI:
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- Abstract:
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Logistic regression(LR)model is widely used in the assessment of landslide susceptibility, but the research on the uncertainty of model parameters is relatively lacking. Markov Chain Monte Carlo(MCMC)method can combine the prior information of the parameters to obtain their posterior distribution, thereby analyzing the uncertainty of the estimated parameters. This study aims to explore the effectiveness of MCMC in the susceptibility modelling based on LR and quantify the uncertainty of the estimated parameters of the models. Taking the 2013 Lushan earthquake, the 2017 Jiuzhaigou earthquake and the 2014 Ludian earthquake in southwest China as examples, we estimated the regression coefficients of the Logistic regression model based on the MCMC method, constructed the regional earthquake-induced landslide susceptibility models, analyzed the uncertainty in parameter estimates, and drew the regional landslide susceptibility maps. The results show that: in the Lushan earthquake case, the uncertainty of all the model parameters is relatively low; in Jiuzhaigou case, the uncertainty of the lithology factor is relatively high; in Ludian case, uncertainty in parameter estimates of lithology, profile curvature and plan curvature is relatively high; generally, most parameter estimates have relatively low uncertainty; the Logistic regression models constructed in this study have high prediction accuracy in the three earthquake-induced landslide events, and the AUC(Area Under ROC Curve)values are all above 0.9, which demonstrates the accuracy of using the MCMC method to estimate the coefficients of the Logistic model; for the relative importance of the influencing factors, elevation, distance from the faults and MMI(Modified Mercalli Intensity)are the top three factors for these three cases. This study can provide a new idea and method for using Logistic regression model to assess landslide susceptibility.