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Rockfall susceptibility assessment in Kuandian County (Northeast China) by combining information content method and analytic hierarchy process

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Abstract

The Kuandian County (Northeast China) has suffered frequent rockfall disasters because of its topography, geological setting, and anthropogenic activities. This research work conducts rockfall susceptibility assessment in Kuandian County by comprehensively combining the Information Content Method (ICM) with the Analytic Hierarchy Process (AHP). Firstly, information contents of the evaluation factors are calculated via statistical analysis on the existing rockfall sites. Then, weights of the evaluation factors are determined by adopting AHP. In the final step, the susceptibility value of each evaluation unit is obtained by weighted summation of the information content of each evaluation factor. The combination of ICM and AHP is able to promote the objectiveness of the evaluation process and accuracy of the evaluation results. Furthermore, in order to analyze the influence of evaluation factor setting on susceptibility, assessments using reduced number of evaluation factors are also conducted for comparative analysis. Additionally, to analyze the influence of evaluation units on susceptibility, comparative analysis on the assessment results from both slope units and grid units in a small area is performed. The susceptibility assessment results presented in this study are generally consistent with the current situation of rockfall disasters in Kuandian County, providing reliable data support for disaster prevention and mitigation. Furthermore, the outcome of this study serves as a methodological reference for rockfall risk assessment in Northeast China and other mountainous regions.

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Data availability

The data in this study are available upon request from the corresponding author.

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Acknowledgements

The Landsat data was provided by the U.S. Geological Survey. The basic geographic information vector data was provided by the geological survey department of Liaoning Province. The authors would like to thank the editors and anonymous reviewers for their constructive comments and efforts spent on this manuscript.

Funding

This work was financially supported by the National Natural Science Foundation of China (Grant No. 42071453), the fundamental Research Funds for the Central Universities (Grant No. N2201020), the Geological disaster survey project of Liaoning province (Grant No. 2022020700179) and the Sino-EU Dragon Project (id. 58029).

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Contributions

Conceptualization, Shanjun Liu and Lianhuan Wei; Data curation, Lianhuan Wei, Yaxin Xu and Donglin Lv; Formal analysis, Lianhuan Wei and Meng Ao; Investigation, Lianhuan Wei, Donglin Lv, Shanjun Liu and Meng Ao; Project administration, Shanjun Liu; Resources, Donglin Lv; Writing—review and editing, Yaxin Xu, Huashuo Cui and Lianhuan Wei. All authors have read and agreed to the published version of the manuscript.

Corresponding author

Correspondence to Donglin Lv.

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The authors declare no competing interests.

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Wei, L., Xu, Y., Lv, D. et al. Rockfall susceptibility assessment in Kuandian County (Northeast China) by combining information content method and analytic hierarchy process. Bull Eng Geol Environ 83, 240 (2024). https://doi.org/10.1007/s10064-024-03739-1

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  • DOI: https://doi.org/10.1007/s10064-024-03739-1

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