Composite landslides induced by heavy rainfalls in suburban areas: City of Patras and surrounding area, western Greece

Abstract

Representative landslide phenomena in western Greece induced by heavy rainfalls, in terms of the geological composition and structure of the affected materials, are thoroughly studied and analyzed. The studied cases involved composite landslides on weathered mantle of flysch and Neogene marls that constitute the most critical landslide prone geological formations in Greece. Their shear strength characteristics were determined from back analyses while low-cost remedial measures, focused on surface and groundwater control, were designed. The effective contribution of the finally constructed works on ground stabilization was systematically monitored by surface and subsurface measurements of ground displacements during a time period after their construction.

Landslide Susceptibility Mapping of the Northeastern Part of Achaia Prefectureusing Analytical Hierarchical Process and Gis Techniques

“…So, it is affected by many slope movements that usually cause serious damages in inhabitant areas and road networks. For the above reasons, various studies have been done in the past regarding landslide examination in the Achaia prefecture (Koukis et al 1997;Koukis et al 2005;Sabatakakis et al, 2005;Rozos et al, 2006).…”

Exploring the Impact of Analysis Scale on Landslide Susceptibility Modeling: Empirical Assessment in Northern Peloponnese, Greece

“…The most typical example is the landslide occurred in Karya, in 1962, resulting to the partial destruction of the homonym village. The village was re-sited later to a nearby geologically stable area where it is now situated [29]. Thus, considering the principle that "the past is the key to the future" [1], it is evident that slope instability is one of the most severe hazards in the region.…”

Preliminary results from active landslide monitoring using multidisciplinary surveys

“…The first significant failure in Analipsi has been recorded in March 2014 as a result of the intense and prolonged rainfall that constitutes the main triggering factor for the landslide initiation in the surrounding area (Koukis, Sabatakakis, Lainas, Depountis, & Skias, 2010;Lainas, Sabatakakis, & Koukis, 2016;Sabatakakis, Koukis, & Mourtas, 2005). The main failure was a translational multiple slide involving recent soil and Neogene sediments.…”