Articles | Volume 25, issue 2
https://doi.org/10.5194/nhess-25-451-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/nhess-25-451-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
03 Feb 2025
Research article |
| 03 Feb 2025
| 03 Feb 2025
Unraveling landslide failure mechanisms with seismic signal analysis for enhanced pre-survey understanding
Jui-Ming Chang
Department of Civil Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
Disaster Prevention and Water Environment Research Center, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
Che-Ming Yang
CORRESPONDING AUTHOR
Department of Civil and Disaster Prevention Engineering, National United University, Miaoli 36063, Taiwan
Wei-An Chao
Department of Civil Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
Disaster Prevention and Water Environment Research Center, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
Chin-Shang Ku
Institute of Earth Sciences, Academia Sinica, Taipei 11529, Taiwan
Ming-Wan Huang
Department of Civil and Disaster Prevention Engineering, National United University, Miaoli 36063, Taiwan
He Yu Engineering Consultants Co. Ltd., Taichung 40642, Taiwan
Tung-Chou Hsieh
Disaster Prevention and Water Environment Research Center, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
Chi-Yao Hung
Department of Soil and Water Conservation, National Chung Hsing University, Taichung 40227, Taiwan
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Seismic techniques applied in rock slope failure research do not provide rapid notifications, as for earthquakes, due to the lack of connections between seismic signals and events. We studied 10 known events in Taiwan and developed a GeoLoc scheme to locate rock slope failures, estimate the event volume, and understand their physical process using available videos. With real-time seismic data transmission, a rapid report can be created for the public within several minutes of the event.
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Short summary
The study on the Cilan landslide (CL) demonstrates the utilization of seismic analysis results as preliminary data for geologists during field surveys. Spectrograms revealed that the first event of CL consisted of four sliding failures accompanied by a gradual reduction in landslide volume. The second and third events were minor toppling and rockfalls. Then combining the seismological-based knowledge and field survey results, the spatiotemporal variation in landslide evolution is proposed.
The study on the Cilan landslide (CL) demonstrates the utilization of seismic analysis results...
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