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The spatio-temporal reconstruction of spoil heap landslide movements using anatomical tree growth responses
Abstract Landslide processes could be dangerous and occur not only under natural conditions but also on anthropogenic slopes of artificially accumulated spoil heaps. Establishing chronology of landslide activity is of crucial importance for landslide hazard assessment. Dendrogeomorphic methods are commonly used approaches for the reconstruction of past activity of landslides on natural slopes, but their application to the anthropogenic landslides is practically lacking, probably due to the dominance of the specific broad-leaved tree vegetation Betula pendula Roth on human-made slopes. To verify its use for the retrospective dating of anthropogenic landslide activity, the first part of this study was focused on a detailed analysis of the anatomical growth responses of B. pendula to landslide movements. Resulting verification of vessel lumen changes in the tension wood of B. pendula enabled reconstruction of the first tree-ring anatomy-based chronology of past landslide events with an unknown history. Reconstructed chronology together with geophysical ERT sounding, geomorphic mapping, grain size analysis and meteorological analysis enabled detailed multidisciplinary analysis of selected anthropogenic landslides. Two types of landslides were detected (deep rotated blocks and an earthflow), and the effect of the grain size of spoil heap material on their development was discussed. Meteorological data analysis provided evidence about the significant effect of extreme short-duration high-intensity precipitation (up to 70 mm per day) during summer months, preceding a distinct drought period with below average precipitation, on triggering all of the dated landslide events (1991, 1997, 2005, 2007, 2011). This study is pioneering with exclusive use of tree anatomical responses for the landslide dating. Moreover, it was first time it was applied to anthropogenic landslides. Thus, this study shows the potential of innovative dendrogeomorphic methods for landslide analysis.
Highlights Multidisciplinary approach was used for spoil heap landslide analysis. First tree anatomy-based chronology of anthropogenic landslide was built. Anatomical responses of B. pendula to landslide movements were analysed. Precipitation triggers of landslide movements were assessed.
The spatio-temporal reconstruction of spoil heap landslide movements using anatomical tree growth responses
Abstract Landslide processes could be dangerous and occur not only under natural conditions but also on anthropogenic slopes of artificially accumulated spoil heaps. Establishing chronology of landslide activity is of crucial importance for landslide hazard assessment. Dendrogeomorphic methods are commonly used approaches for the reconstruction of past activity of landslides on natural slopes, but their application to the anthropogenic landslides is practically lacking, probably due to the dominance of the specific broad-leaved tree vegetation Betula pendula Roth on human-made slopes. To verify its use for the retrospective dating of anthropogenic landslide activity, the first part of this study was focused on a detailed analysis of the anatomical growth responses of B. pendula to landslide movements. Resulting verification of vessel lumen changes in the tension wood of B. pendula enabled reconstruction of the first tree-ring anatomy-based chronology of past landslide events with an unknown history. Reconstructed chronology together with geophysical ERT sounding, geomorphic mapping, grain size analysis and meteorological analysis enabled detailed multidisciplinary analysis of selected anthropogenic landslides. Two types of landslides were detected (deep rotated blocks and an earthflow), and the effect of the grain size of spoil heap material on their development was discussed. Meteorological data analysis provided evidence about the significant effect of extreme short-duration high-intensity precipitation (up to 70 mm per day) during summer months, preceding a distinct drought period with below average precipitation, on triggering all of the dated landslide events (1991, 1997, 2005, 2007, 2011). This study is pioneering with exclusive use of tree anatomical responses for the landslide dating. Moreover, it was first time it was applied to anthropogenic landslides. Thus, this study shows the potential of innovative dendrogeomorphic methods for landslide analysis.
Highlights Multidisciplinary approach was used for spoil heap landslide analysis. First tree anatomy-based chronology of anthropogenic landslide was built. Anatomical responses of B. pendula to landslide movements were analysed. Precipitation triggers of landslide movements were assessed.
The spatio-temporal reconstruction of spoil heap landslide movements using anatomical tree growth responses
Šilhán, Karel (author)
Engineering Geology ; 281
2020-12-29
Article (Journal)
Electronic Resource
English
Using anatomical tree growth responses to date landslide movements
| Springer Verlag | 2024
Control of colliery spoil-heap fire
| Engineering Index Backfile | 1937
Control of colliery spoil-heap fire
| Engineering Index Backfile | 1937