Role of geoinformatics in slope stability assessment and monitoring

Slope instability leading to landslides can be mapped, monitored and modelled using Geoinformatics (GIT) tools and techniques. Particularly these techniques can be of immense value in large tracts of inaccessible regions like Himalaya. Traditional geotechnical analysis like factor of safety (FOS) calculation can be implemented in GIS and spatial pattern can be analysed. Additionally, satellite remote sensing provides information on slope deformation using DInSAR and precipitation which is an important triggering factor of landslides in India. GNSS based observation can provide precise observation on slope deformation which is crucial to modelling and monitoring of active and potential slope failures. Satellite as well ground based information can be integrated using geoinformatics tool to develop an Early Warning System for landslides. Although opportunities are enormous, there exist gaps in appropriate policy frame work to incorporate GI tools in slope stability assessment and monitoring related to infrastructure development.