Automated calculation of the susceptibility to mass movements through the phyton/arcgis interface
DOI:
https://doi.org/10.5902/2236499489613Keywords:
Mass movements, Modeling, Landsides, PhytonTooboxAbstract
This work aimed to develop and implement an algorithm in the Python language, which integrates the various steps to calculate the spatial distribution of the susceptibility to mass movements, automating the flow of tasks that characterizes the process. The structuring of the flow of operations was based on the logic of multicriteria assessment through weighted linear combination. The algorithm includes geoprocessing operations for the generation of information plans, standardization of variables, weighting of conditioning criteria and subsequent integration through the weighted average of factors. This algorithm was implemented in the Python programming language, including the use of modules and functions provided by the ArcPy package, and included as a tool (script tool) in the ArcGIS software through functionalities allowed by the possibility of creating and editing tools using scripts in Python. The tool was submitted to tests in two different case studies, as a way to simulate the use of the tool in real situations and to validate its operation through the analysis of products obtained in the process execution. The results demonstrated significant advantages in the use of the tool, mainly through efficiency and flexibility gains and support to the user. The tool proved to be effective in assisting policies for urban planning, territorial occupation and monitoring of geological risks, and can assist in assessments of the susceptibility to this type of phenomenon, which are essential for the consolidation of urban agglomerations and prevention of natural disasters.
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