engleski

Availability of data about landslides in Croatia and their implementation in proposed formats of EU landslides data bases

The importance of landslide inventory or geotechnical inventory is recognized on the European level. As of July Croatia is becoming a member of European Union so it would be preferable that the data about existing landslides are in accordance with European Union data. In that sense a questionnaire form was submitted in 2010 to all European countries. Aim of this questionnaire was a review of landslide data and their state within SafeLand project – Living with landslide risk in Europe: Assessment, effects of global change and risk management strategies. The main activities of SafeLand project is to: improve assessment of landslide hazard (triggering mechanisms and runout), quantitatively assess landslide risk in selected areas of Europe, assess the changing pattern of landslide risk as effects of climate change and other factors, verify estimated hazards through monitoring and remote sensing and to design and test the possibilities of early warning systems and risk management with development of toolbox for landslide risk mitigation (measures and choosing the appropriate risk mitigation strategy). Project team is assembled from 25 institutions from 13 countries with the leadership of Norwegian Geotecnical Institute (NGI). Some European countries have already developed advanced data collection about landslides but in the majority of the countries this process is still in development. Many European countries are working on their national or at least regional data basis (Landslide data basis – LDBs). There are still some difficulties in unifying these data as their exact content, data up dating methods, form, structure, language and availability differs in wide range. In Croatia registration of landslides is an ongoing process within production of engineering geological maps. Engineering geological map in scale of 1:300.000 is finished but sheets of basic engineering geological maps in scale of 1:100.000 are not. It would be preferable to have data even in some more detailed scales but those kind of data only exists for some urbanized areas (for example Detailed engineering geological maps in scale of 1:5.000 for area of Zagreb or only for some specific locations within different types of reports and investigations). For the needs of SaleLand the existing accessible data about landslides were reviewed and some interesting patterns about landslide number, distribution and type can be seen, on national (regional) level. The main geological differentiation in Croatia is on two regions: panonian region and karst region. Panonian region stretches from eastern part of Croatia (Slavonia) to the middle part of Croatia (to the city of Karlovac). Karst region stretches from the middle part of Croatia (south from the city of Karlovac) with coastal part (Istria from west and Dalmatia on east). Geological differentiation is mainly in accordance with climate differentiation: continental and maritime. In these main regions some micro regions can be distinguished. For every micro region the main type of mass movement is different and a characteristic model can be developed. Based on the available date, these characteristic models, for every micro region will be presented and explained. The emphasis is on incorporating these models into one national up to date landslide data base in accordance with the goals of Safeland project.

landslide; data base; implementation

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