University of Oulu

Bahmani, F., Fattahi, M.H., Sabzevari, T. et al. Spatial–temporal analysis of landslides in complex hillslopes of catchments using Dynamic Topmodel. Acta Geophys. 70, 1417–1432 (2022). https://doi.org/10.1007/s11600-022-00786-8

Spatial–temporal analysis of landslides in complex hillslopes of catchments using Dynamic Topmodel

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Author: Bahmani, Farid1; Fattahi, Mohamad Hadi1; Sabzevari, Touraj2;
Organizations: 1Department of Civil Engineering, Marvdasht Branch, Islamic Azad University, Marvdasht, Iran
2Department of Civil Engineering, Estahban Branch, Islamic Azad University, Estahban, Iran
3Water, Energy and Environmental Engineering Research Unit, University of Oulu, Oulu, Finland
4Faculty of Natural Resources, Yazd University, Yazd, Iran
Format: article
Version: accepted version
Access: embargoed
Persistent link: http://urn.fi/urn:nbn:fi-fe2022122974014
Language: English
Published: Springer Nature, 2022
Publish Date: 2023-04-30
Description:

Abstract

Hillslopes of the catchments in nature have three forms (convergent, divergent, parallel) in terms of plan shape and also in terms of floor curvature profile, they have three convex, concave, and straight shapes combining into complex hillslopes. Previous studies indicated the topography and geometry of complex hillslopes influence their hydrologic responses/attributes in both surface and subsurface flow. The three-dimensional shape and geometry of the hillslopes were introduced into Topmodel as the new parameters, and a complex Topmodel was presented that could check the saturation of different parts of complex hillslopes. The complex Topmodel model was linked to the landslide model “SINMAP”. Finally, the spatial–temporal variations of the saturation of the complex hillslopes and their stability rate were investigated using the Dynamic Topmodel. Results revealed that the influence of local slope, which is a function of curvature of the hillslopes, is more dominant than the saturation rate on the stability of the hillslopes. In contrast with convex hillslopes, the downstream in the concave hillslopes was more stable than upstream. Nevertheless, the upstream area in the concave hillslopes and downstream in the convex ones can be prioritized to implement artificial stabilization.

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Series: Acta geophysica
ISSN: 1895-6572
ISSN-E: 1895-7455
ISSN-L: 1895-6572
Volume: 70
Issue: 3
Pages: 1417 - 1432
DOI: 10.1007/s11600-022-00786-8
OADOI: https://oadoi.org/10.1007/s11600-022-00786-8
Type of Publication: A1 Journal article – refereed
Field of Science: 1171 Geosciences
Subjects:
Copyright information: © The Author(s) under exclusive licence to Institute of Geophysics, Polish Academy of Sciences & Polish Academy of Sciences 2022. This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: https://doi.org/10.1007/s11600-022-00786-8