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Geographic Information Technologies for the Study of Mass Wasting Hazards

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DOI: 10.4236/ijg.2014.55048    5,779 Downloads   7,035 Views   Citations

ABSTRACT

The purpose of the research was to obtain the mass wasting hazard map for the state of Vargas, central coast of Venezuela, using GIS technology. The work was developed through the heuristic method with the generation of thematic digital maps, univariate statistical treatment, weighting of each variable and quantifying the relationship of each parameter unit regarding mass wasting processes. The algorithm designed to perform map algebra was designed using the variables: surface geology, slope, slope orientation, terrain curvature, moisture topographic index, power index surface flow rate and capacity sediment transport and the rate normalized difference vegetation. The results show a distribution of landslide hazard with the highest values in the west central part of Vargas state, where the dominant lithology is incompetent, and combined with topographic elements, determining high instability, meanwhile the lower hazard areas were found in specific areas such as the middle watershed areas east of the state. The calibration of this model shows a reliability of 80%, so it is highly advisable to use the information generated in this work by governmental and non-governmental organizations in the planning, management and use of land.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Pacheco, H. and Suárez, C. (2014) Geographic Information Technologies for the Study of Mass Wasting Hazards. International Journal of Geosciences, 5, 519-526. doi: 10.4236/ijg.2014.55048.

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