Please use this identifier to cite or link to this item:
http://hdl.handle.net/2067/1416
Title: | Flow routing algorithms and landslide modelling | Authors: | Rulli, Maria Cristina Nardi, Fernando Santini, Monia Petroselli, Andrea Grimaldi, Salvatore |
Issue Date: | 2007 | Publisher: | AGU Fall Conference, San Francisco, CA, 10-14 December 2007 | Source: | Rulli, M.C. et al. 2007. Flow routing algorithms and landslide modelling. AGU Fall Conference (San Francisco, CA, 10-14 December 2007) | Abstract: | The physical processes governing shallow landslide triggering can be ascribed to hydrological and geomechanic forcings. Modelling shallow landslide triggering via hydrogeomorphic spatially distributed model requires to extract for any location in the river basin the geomorphic and hydrologic attributes. The Digital Elevation Models allow an easy quantification of several morphologic and hydrologic landscape properties e.g.primary attributes such as slope, aspect, plan and profile curvature, flow path lengths and secondary attributes such as topographic index and drainage area per unit contour length. Although all of these attributes are used when assessing the hydrological forcings to shallow landslide triggering, it has to be stressed that the flow direction and accumulation algorithm plays a significant role in the accurate physical representation of those waterdriven slope instability phenomena. In this study three flow direction algorithm (D8, D8- LTD and D ) are applied in conjunction with two DEM correction techniques for the treatment of pits and flat areas (ArcInfo standard approach and PEM4PIT), in order to determine the terrain attributes needed as input for the hydrogeomorphic model Shalstab. Quantitative results corresponding to the implementation of the different hydrogeomorphic terrain analysis algorithms on different case studies provide an objective framework for testing the accuracy and performance of the different schemes in relation to the DEM-based hydrogeomorphic prediction of shallow landslides. |
URI: | http://hdl.handle.net/2067/1416 |
Appears in Collections: | GEMINI - Archivio della produzione scientifica |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
AGU_2007_Flow Routing_Landslide.pdf | 2.27 MB | Adobe PDF | View/Open |
Page view(s)
125
Last Week
1
1
Last month
1
1
checked on Mar 16, 2024
Download(s)
22
checked on Mar 16, 2024
Google ScholarTM
Check
This item is licensed under a Creative Commons License