Natural Hazards and Earth System Science www.nat-hazards-earth-syst-sci.net 1561-8633 1684-9981 9 1 2009 10.5194/nhess-9-119-2009 http://www.nat-hazards-earth-syst-sci.net/9/119/2009/ http://www.nat-hazards-earth-syst-sci.net/9/119/2009/nhess-9-119-2009.html http://www.nat-hazards-earth-syst-sci.net/9/119/2009/nhess-9-119-2009.pdf 119 128 2009-02-13 Investigation of recent catastrophic landslides in the flysch belt of Outer Western Carpathians (Czech Republic): progress towards better hazard assessment J. Klimeš jklimes@centrum.cz I. Baroň T. Pánek T. Kosačík J. Burda F. Kresta J. Hradecký Institute of Rock Structure and Mechanics, Praha, Czech Republic Czech Geological Survey, Brno, Czech Republic University of Ostrava, Ostrava, Czech Republic Charles University, Prague, Czech Republic SG-Geotechnika Inc., Ostrava, Czech Republic Rapid snow melting and intense precipitation triggered and reactivated tens of mostly shallow landslides in the eastern part of the Czech Republic at the turn of March and April 2006. This area is build up by highly fractured flysch rock units with variable content of sandstones and claystones. The landslide complex at Hluboče (Brumov-Bylnice town) is composed of shallow translational (up to 10 m thick) as well as deep-seated (up to 20 m thick) rotational landslides, which generated a catastrophic earthflow at their toe. This earthflow destroyed three buildings, the access road and caused total loss of about 350 000 EUR. Detailed field investigation, review of the archive sources and interviewing of local inhabitants allowed brief description of slope movement history prior the catastrophic event as well as detailed reconstruction of slope failure mechanisms during the main movement activity (3–4 April 2006). This information, along with the detailed description of the passive as well as active causative factors (structural and morphologic settings) can contribute towards better identification of potentially dangerous slope failures in the study region. % vor jede Referenz Baroň, I., Krejčí, O., and Prchal, J.: Fotoletecká dokumentace kalamitní aktivace mělk\'ych svahov\'ych deformací na ja\vre 2006 na Zlínsku, in: Proceedings of International conference Slope deformations and pseuodo karst, 29–31 May 2007 in Vsetín, on CD, 2007. % vor jede Referenz Baroň, I., Cílek, V., Krejčí, O., Melichar, R., and Hubatka, F.: Structure and dynamics of deep-seated slope failures in the Magura Flysch Nappe, outer Western Carpathians (Czech Republic), Nat. Hazards Earth Syst. Sci., 4, 549–562, 2004. % vor jede Referenz Bíl, M. and Müller, I.: The origin of shallow landslides in Moravia (Czech Republic) in the spring 2006, Geomorphology, 99, 246–253, 2008. % vor jede Referenz Burkhardt, E., Liškutínová, D., and Plička, M.: V\'yznačn\'y sesuv u Oznice v~Host\'ynsk\'ych vrších. Sborník Československé společnosti zeměpisné, 3, 219–225, 1972. % vor jede Referenz Cardinali, M., Ardizzone, F., Galli, M., Guzzetti, F., and Reichenbach, P.: Landslides triggered by rapid snow melting: the December 1996–January 1997 event in central Italy, in: Mediterranean Storms, Proceedings of the EGS Conference in Maratea, Italy, October 1999, 439–448, 1999. % vor jede Referenz Corsini, A., Pasuto, A., Soldati, M., and Zannoni, A.: Field monitorin of the Corvara landslide (Dolomites, Italy) and its relevance for hazard assessment, Geomorphology, 66, 149–165, 2005. % vor jede Referenz Crosta, G. B., Chen, H., and Lee, C. F.: Replay of the 1987 Val Pola Landslide, Italian Alps. Geomorphology, 60, 127–146, 2004. % vor jede Referenz Kirchner, K.: Klimatologie, in: P\vríroda Valašska (okres Vsetín), ČSOP ZO 76/06 Orchidea, Vsetín, Czech Republic, 61–66, 2001. % vor jede Referenz Klimeš, J.: Statistical and GIS based spatial analysis of factors contributing to the landslide evolution, Outer Western Carpathians, Czech Republic, in: Proceedings of the Conference, 15. Tagung für Ingenieurgeologie, Erlangen, Germany, 6–9 March 2005, 61–66, 2005. % vor jede Referenz Klimeš, J.: Analysis of the preparatory factors of landslides, Vsetínské vrchy Highland, Czech Republic, Charles Univesity Prague, Czech Republic, Ph. D., 151, 2007. % vor jede Referenz Klimeš, J.: Deterministick\'y model náchylnosti \'uzemí ke vzniku svahov\'ych deformací ve Vsetínsk\'ych vrších, Geografie – sborník ČGS, 113(1), 48–60, 2008. % vor jede Referenz Krejčí, O., Baroň, I., Bíl, M., Jurová, Z., Hubatka, F., and Kirchner, K.: Slope movements in the Flysch Carpathians of Eastern Czech Republic triggered by extreme rainfalls in 1997: A case study, Phys. Chem. Earth, 27, 1567–1576, 2002. % vor jede Referenz Krejčí, O.: Geologická mapa ČR 1:50000, list 25–43 P\'uchov, ČG\'U Praha, Czech Republic, map, 1992. % vor jede Referenz Malamud, B. D., Turcotte, D. L., Guzzetti, F., and Reichenbach, P.: Landslide inventories and their statistical properties, Earth Surf. Proc. Land, 29, 687–711, 2004. % vor jede Referenz Margielewski, W.: Records of the Late Glacial-Holocene palaeoenvironmental changes in landslide forms and deposits of the Beskid Makowski and Beskid Wyspowy Mts. Area (Polish Outer Carpathians), Folia Quaternaria, 76, 1–149, 2006. % vor jede Referenz Michlíček, E.: Hydrogeologické rajóny ČSR, svazek 2 Povodí Moravy a Odry, Geotest Brno, 165, 1986. % vor jede Referenz NASA: http://www2.jpl.nasa.gov/srtm/, last access: 22 December 2007. % vor jede Referenz Pánek, T., Hradeck\'y, J., Minár, J., Hungr, O., and Dušek, R.: Late Holocene catastrophic slope collapse affected by deep-seated gravitational deformation in flysch: Ropice Mountain, Czech Republic, Geomorphology, 103, 414–429, 2009. % vor jede Referenz Pícha, F. J., Stráník, Z., and Krejèí, O.: Geology and Hydrocarbon Resources of the Outer West Carpathians and thei Foreland, Czech Republic, in: The Carpathians: Geology and Hydrocarbon Resources, edited by: Golonka, J. and Picha, F. J., AAPG Memoir, 49–176, 2004. % vor jede Referenz Rybá\vr, J.: Rozbor p\vríčin zv\'yšeného v\'yskytu svahov\'ych deformací v~České republice v~červenci 1997, Geotechnika, 2, 7–14, 1999. % vor jede Referenz Starkel, L., Kalicki, T., Krapiec, M., Soja, R., Gebica, P., and Czy\.zowska, E.: Hydrological changes of valley floors in Upper Vistula Basin during the last 15000 years, Geographical Studies (Spec. Issue) IgiPZ PAN, Warsaw, 9, 7–128, 1996. % vor jede Referenz Šanda, M.: Proudění vody v p\.udním profilu na svahu horského povodí. M.S. Doktorské diserta�ní minimum, ČVUT, Prague, Czech Republic, 56, 1998. % vor jede Referenz Šp\.urek, M.: Historical catalogue of slide phenomena, Studia geographica 19, GG\'U ČSAV Brno, Czech Republic, 19, 180, 1972.