Landslide Risk Mitigation in Georgia George Gotsiridze 10 bulachauri, str. 380113, Tbilisi, Georgia GIS and RS Consulting Center “Geographic” e.mail: [email protected] web: www.geographic.ge Introduction Georgia is a high mountainous country where the natural and anthropogenic processes are too complicated and interrelated. Moreover, these processes are presented by wide spectrum of especially dangerous phenomena. Landslide appears to be one of such phenomena that together with the earthquakes, mudflows, collapses and avalanches make united front of catastrophic events bearing material losses to the country and causing casualties. The modern statistics show catastrophic growth of the number of landslide bodies during the last 20 years on the entire territory of Georgia. However, it does not mean real appearance of new objects in their enormous number (unlike the interpretation of some scientists). The statistics just say about the lack of investigation and inventory of landslides and related processes. Consequently, the issue of application of new technologies for data collection and process is still critical. 1. Problem analysis - Data collection and Processing Old maps; Old technology and methodology; No new field data; No staff and no equipment. - Analysis Poor and Old methods of analysis; No experience in complex analysis; Ignoring of social factors (including mentality and public awareness) - Decision making No rules and not defined workflows and fixed scope of works of decision making persons and governmental bodies - Concepts of mitigation and response Still is not exist Policy and its implementation guidelines - Disaster management Infrastructure Infrastructure is not exist; exist just responsible governmental agency on the central level with not enough budget. 2. Geodynamic processes Landslides are not isolated bodies and their appearance and development are sensitively related to natural and anthropogenic processes. We must investigate and assess the situations in integral way and do not ignore any social and economic issues. GIS and Remote sensing technologies are tools for understanding spatial relationships and create methods for risk mitigation. Main risk-factors are: a) crust, its movements and geological condition; b) ground masse movements and erosion; c) Landscape changes; and d) human impact. - Geo-tectonic processes tectonic faults, lineaments, tectonic blocks and its mosaic, earthquakes. - Slope processes tecto-seismogenic landslides, mud-flows, collapses, avalanches, solifluction. - Natural and Cultural Landscapes desertification, deforestation, land degradation, agriculture and urbane development 3. Anthropogenic impacts - Constructions and Management Road and building construction, pipe-lines. - Agriculture activities переувлажение грунта - Deforestation вырубка леса 4. GIS and RS means of data processing Geographic Information Systems (GIS) and Remote Sensing (RS) technologies (aerial photos, satellite images, radar data. digital orthophotos, photogrammetry, Ditilal Elevation Models (DEM), Digital Terrain Model (DTM,) Image classification, raster data, vector data, GIS layers, Geo Data Base, GIS analysis, Spatial analysis, topographic maps, graphical data, alphanumeric data, electronic data, analog data.) - Data collection and processing GPS (Ground Positioning System), scanning, geo-referencing, geo-coding, data base creation, Data base management system (DBMS), Software application, GIS software, RS software. - Integrated Analysis data integration, mapping, analytical maps. - Disaster Management Spatial Information System expertise system, integrated, open, accessible, programming languages, customeroriented system, IT technologies. - Decision Making support training, preparation, GIS groups and units, GIS solutions, GIS applications, corporative GIS. 5. Disaster Management Information system as a General master Plan 6. Virtual flights over Georgia Using Digital elevation models and multi-spectral or panchromatic satellite or aerial images and Virtual GIS software we can imitate virtual flight over sensitive areas of Georgia. Summary Finally, it could be said that well thought strategy at the local and regional levels and accordingly organized information-notification system (where GIS will be presented as basic component) in Georgia will rise (and will appear in those places where they have not been yet presented) quantity of adopted decisions and the fight against the consequences will be more distinct and effective.