{"title":"Redundancy and hierarchical cluster analyses for characterizing geomorphic features contributing to the formation of landslide dams","authors":"Ho-Wen Chen, Chien-Yuan Chen, Yen-Hsun Chuang","doi":"10.1007/s10346-024-02310-z","DOIUrl":null,"url":null,"abstract":"<p>Landslides frequently produce dams that can cause widespread destruction when breached. Several factors influence the formation of landslide dams. This study used redundant analysis and hierarchical cluster analysis to investigate geomorphic features contributing to the formation of landslide dams. Eight landslide geomorphic features corresponding to the width of the river beneath the landslide and four geomorphic indices were selected to explore the geomorphic characteristics of 28 river-damming and 59 nondamming landslides in Taiwan. The redundancy analysis revealed that the geomorphic features derived for the river-damming landslides differed from those derived for the nondamming landslides. The width of the river beneath the landslide was noted to be strongly correlated with the aspect of nondamming landslides. Hierarchical cluster analysis was used to cluster the river-damming landslides into three clusters based on the geomorphic features influencing dam formation. Based on these clusters, the landslide site may be damming rivers under different geomorphic combination conditions.</p>","PeriodicalId":17938,"journal":{"name":"Landslides","volume":"24 1","pages":""},"PeriodicalIF":5.8000,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Landslides","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.1007/s10346-024-02310-z","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, GEOLOGICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Landslides frequently produce dams that can cause widespread destruction when breached. Several factors influence the formation of landslide dams. This study used redundant analysis and hierarchical cluster analysis to investigate geomorphic features contributing to the formation of landslide dams. Eight landslide geomorphic features corresponding to the width of the river beneath the landslide and four geomorphic indices were selected to explore the geomorphic characteristics of 28 river-damming and 59 nondamming landslides in Taiwan. The redundancy analysis revealed that the geomorphic features derived for the river-damming landslides differed from those derived for the nondamming landslides. The width of the river beneath the landslide was noted to be strongly correlated with the aspect of nondamming landslides. Hierarchical cluster analysis was used to cluster the river-damming landslides into three clusters based on the geomorphic features influencing dam formation. Based on these clusters, the landslide site may be damming rivers under different geomorphic combination conditions.
期刊介绍:
Landslides are gravitational mass movements of rock, debris or earth. They may occur in conjunction with other major natural disasters such as floods, earthquakes and volcanic eruptions. Expanding urbanization and changing land-use practices have increased the incidence of landslide disasters. Landslides as catastrophic events include human injury, loss of life and economic devastation and are studied as part of the fields of earth, water and engineering sciences. The aim of the journal Landslides is to be the common platform for the publication of integrated research on landslide processes, hazards, risk analysis, mitigation, and the protection of our cultural heritage and the environment. The journal publishes research papers, news of recent landslide events and information on the activities of the International Consortium on Landslides.
- Landslide dynamics, mechanisms and processes
- Landslide risk evaluation: hazard assessment, hazard mapping, and vulnerability assessment
- Geological, Geotechnical, Hydrological and Geophysical modeling
- Effects of meteorological, hydrological and global climatic change factors
- Monitoring including remote sensing and other non-invasive systems
- New technology, expert and intelligent systems
- Application of GIS techniques
- Rock slides, rock falls, debris flows, earth flows, and lateral spreads
- Large-scale landslides, lahars and pyroclastic flows in volcanic zones
- Marine and reservoir related landslides
- Landslide related tsunamis and seiches
- Landslide disasters in urban areas and along critical infrastructure
- Landslides and natural resources
- Land development and land-use practices
- Landslide remedial measures / prevention works
- Temporal and spatial prediction of landslides
- Early warning and evacuation
- Global landslide database