LOESSFEST'09 | Aug. 31st – Sept. 3rd, 2009 |Novi Sad-Serbia
Landslide Susceptibility Evaluation on Loess Structures on the Fruška Gora Mountain (Vojvodina, Serbia)
Minucsér, M.1, Marković, S.B.1, Pavić, D.1, Mucsi, L.2, Szatmári, J.2, Seferović, S.1
1Faculty of Sciences, University of Novi Sad, Serbia
2University of Szeged, Faculty of Sciences, Hungary
The Fruška gora is a low (539m) mountain situated at the southern rim of the Pannonian basin. It is an interesting terrain for mass movement study, with an area covering a total of about 1500 km2 and many landslides types that can be observed: large, deep seated rotational slides, small shallow slides, earth slumps and earth flows. Numerous settlements, roads, railroads and bridges are potentially threatened by these slope movements. Loess and loess like sediments cover nearly 2/3 of the total area of the mountain and its surrounding, and the majority of the largest landslides are located on loess. The influence of loess sediments on landslide formation, which covers the lower parts of mountain, is particularly interesting. As a porous and mostly permeable medium, and also in a form of steep cliffs eroded by the Danube, the loess structures contribute to terrain instability. The varying hydrogeological properties of the formations under the loess sediments have the strongest effect on the mass movement dynamics, which makes it difficult to use loess distribution as a uniform proxy for greater landslide susceptibility. The aim of this analysis is to evaluate the influence of loess on landslide susceptibility using geostatistical methods, by comparing landslide properties on various terrain unit types.