Analysis of prepatory conditions to landslides and erosion processes on the territory of the Republic of Croatia : master’s thesis

Abstract

Odronjavanje je po definiciji aktivni geomorfološki proces kod kojeg dolazi do odvajanja pojedinačnog ili nekoliko blokova stijene sa strmo nagnutih padina nakon čega slijedi brzi pokret niz kosinu slobodnim padom, odskakivanjem, kotrljanjem i klizanjem. S obzirom da je oko 50% Hrvatske krško područje, pojave te vrste klizišta su česte i u prošlosti su izazvale velike štete na infrastrukturnim građevinama, naseljima i ugrozu ljudskih života. Erozija je aktivni geomorfološki proces koji uzrokuje transport materijala posredstvom agenasa vode, vjetra ili leda. Erozija može destabilizirati padinu konstantnim odnosom materijala i izazvati pojavu klizišta. Cilj ovog rada je uz pomoć dostupnih izvora podataka saznati u kakvim se vrstama naslaga pojavljuju procesi odronjavanja i erozije te koliki su nagibi padina na zabilježenim lokacijama odrona. Pregled ovih pojava izrađen je po geotektonskim jedinicama na području Republike Hrvatske. Analize preduvjeta procesa predstavljaju početni korak za daljnja istraživanja i radove kao što su procjena podložnosti, hazarda ili rizika od odrona i erozije.By definition, landslides represent an active geomorphological process which occurs when a single block or several blocks of rock separate from a steep slope and fall, bounce, roll and slide at high velocity down the slope. Considering that 50% of Croatia is karst area, these kinds of landslides are frequent and have caused a lot of damage to the infrastructure, settlements and have threatened human lives. Erosion is an active geomorphological process which is caused by the transport of material through water, wind or ice. Erosion can cause the destabilization of slopes by the constant removal of material and thus causing landslides. Using available data sources, the goal of this thesis is to discover, the types of beds that are prone to landslides and erosion and also to examine what is the inclination on locations of recorded landslides. The overview of landslides and erosion is performed according to tectonic units in Croatia. Such analyses of preparatory casual processes represent the first step in future research into topics such as susceptibility assessment, hazard and landslide and erosion risks