Publisher © Czech Geological Survey, ISSN: 2336-5757 (online), 0514-8057 (print)

Landslide activity by the Kozárovce village (Levice district, Slovakia)


Karel Šilhán, Ivan Ružek, Libor Burian, René Putiška

Geoscience Research Reports 48, 2015 (GRR for 2014), pages 141–144

Full text (PDF, 2.16 MB)

Published online: 12 October 2015

Export to RIS



The present-day complex landslide research requires application of a broad spectrum of methodical approaches. Only multidisciplinary analysis can successfully resolve all actual questions regarding landslide predisposition, triggers, inner structure or recent activity. We used combination of two methods for determination of inner structure and historical activity of landslide occurring close to the Kozárovce village. The landslide is of a rotation type, being ca 40 m long and ca 50 m wide, and is developed in loess accumulation covering volcanic (andesite) bedrock. Geoelectrical method ERT (electrical resistivity tomography) was applied in two profiles running along and across the landslide area. The “Wenner-Schlumberger” array with 1 m electrode spacing was used. The landslide body generally shows very low values of resistivity in comparison with volcanic bedrock or loess material lying outside the landslide area. That is why the landslide body is quite well visible in the ERT record. Based on the ERT record the landslide depth was established at 10–11 m, and rotation character of landslide movement was verified. The historical chronology of landslide reactivations was reconstructed using dendrogeomorphic methods. Twenty two increment cores were extracted from the disturbed (tilted or bended stems) individuals of Robinia pseudoacacia L. growing on the landslide. The identification of landslide signal within the tree ring series was realized using analysis of tree ring eccentricity (as tree reaction to stem tilting). Altogether 14 years of landslide activity was reconstructed with the oldest one in 1965. The main time period with recorded reactivation lasted from 1978 to 2003. The strongest landslide signal within tree ring series was identified in 1965, 1983, 1997, and 2002.


Alestalo, J. (1971): Dendrochronological interpretation of geomorphic processes. - Fennia 105, 1-139.

Cook, E. R. (1985): A time series analysis approach to tree-ring standardization. PhD. Dissertation. - The University of Arizona, Tucson, USA.

Dahlin, T. - Zhou, B. (2004): A numerical comparison of 2D resistivity imaging with 10 electrode arrays. - Geophys. Prospect. 52, 379-398.

Loke, M. H. - Barker, R. D. (1996): Rapid least-squares inversion of apparent resistivity pseudosections by a quasi-Newton method. - Geophys. Prospect. 44, 131-152.

Perrone, A. - Lapenna, V. - Piscitelli, S. (2014): Electrical resistivity tomography technigue for landslide investigation: A review. - Earth-Sci. Rev. 135, 65-82.

Raška, P. - Klimeš, J. - Dubišar, J. (in press): Using local archive sources to reconstruct historical landslide occurrence in selected urban region sof the Czech Republic: examples from regions with different historical development. - Land Degrad. Develop.

Shroder, J. F. (1978): Dendrogeomorphological analysis of mass movement on Table Cliffs Plateau, Utah. - Quat. Res. 9, 168-185.

Šilhán, K. - Pánek, T. - Turský, O. - Brázdil, R. - Klimeš, J. - Kašičková, L. (2014): Spatio-temporal patterns of recurrent slope instabilities affecting undercut slopes in flysch: a dendrogeomorphic approach using broad-leaved trees. - Geomorphology 213, 240-254.

V.I.A.S. (2005): Time Table. Installation and instruction manual. Ver. 2.1, Vienna Inst. Archaeol. Sci. Vienna.