Methodological Aspects of Building Information System for Monitoring of Landslide Hazards

Abstract

The aim of the current paper is to present some methodological aspects of building monitoring information system for landslides. Having regard the importance of data in functioning of the monitoring system a special attention is given to the landslide factors, determining the weights of different factors and methods for making a landslide susceptibility map which is a base for selecting monitoring points and assessment of landslide hazard. The paper is not about the monitoring equipment and technical issues of building monitoring system. It concern landslide factor analysis and characteristics of spatial data in geographic information system (GIS) environment used for assessment of landslide susceptibility as a part of monitoring system. Based on ArcGIS Spatial analyst tools (ESRI Inc.) two overlay techniques - fuzzy logic and weighted sum are suggested for making a landslide susceptibility map. Application of GIS allows processing of a large amount of data and easily updating of information. It helps to better communicating the information about landslide hazards to the public by the relevant visualisation of the spatial data and also facilitate decision makers in case of natural hazard.