Izvle~ekNa podlagi analize in geolo{ke interpretacije podatkov ponovljenega preciznega nivelmana smo vzdolž nivelmanskega poligona med Se~ovljami in Lescami ugotovili in kvantificirali recentno aktivnost nekaterih najpomembnej{ih geolo{kih struktur v zahodni Sloveniji. Ob upo{tevanju omejitev metode, zaznavamo lahko le vertikalno komponento premika, ugotavljamo, da so na obravnavanem obmo~ju recentno aktivne vsaj naslednje strukture: sinklinalno upogibanje med Strunjanom in Koprom, Kra{ki naluskani prag, Diva{ki prelom, Ra{ki prelom, Južnoalpska narivna meja in nariv Julijskih Alp. Najve~ja razlika hitrosti vertikalne komponente premika med Se~ovljami in Bledom je približno 7 mm/a. Rezultati meritev oziroma hitrosti premikov so relativni in prera~unani glede na izhodi{~no to~ko v Se~ovljah. Uvajamo pojem vertikalne geodinami~ne aktivnosti (VGA), kot vmesni ~len med geolo{ko interpretacijo geodetskih meritev in možnimi neposrednimi aplikacijami ter kot primerjalno veli~ino. AbstractSeveral important geological structures in the western Slovenia were identified as active and their activity was quantified. Geologic interpretation is based on the analysis of repeated leveling line campaigns data along the Se~ovlje-Bled polygon. Taking into account the limitations of the method -only the vertical component of displacement is measured -the following structures were identified as active: a juvenile syncline between Strunjan and Koper, the Kras Imbricate Structure, the Diva~a fault, the Ra{a fault, the Southalpine Front and the Julian Alps thrust. Vertical movement rate is relative, calculated with respect to the benchmark in Se~ovlje. The largest uplift rate difference between Se~ovlje and Bled is 7 mm/a.Vertical Geodynamic Activity (VGA) is introduced as a link between geologic interpretation of geodetic measurements on one side and possible applications on the other as well as a mean of comparison between tectonically active regions.

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Geodetske metode omogočajo določanje recentnih tektonskih premikov zemeljske skorje, lokalnih premikov zemeljske površine, kot so plazovi, posedanje, ugrezanje zaradi rudarjenja, izsuševanja, črpanja podtalnice, ter ugotavljanje premikov in deformacij zgrajenih objektov, kot so prometnice, mostovi, vodne pregrade in strojne konstrukcije. Na podlagi premikov točk

To perform geodetic measurements of displacements of the ground and manmade constructions, stabilised reference points are needed from which control points on the object or its surroundings could be measured. Reference points are most commonly stabilised with reinforced concrete pillars; however, they are not always constructed in an appropriate manner. The influence of temperature variation within a pillar on the position of the fixed screw for forced centring is not negligible and should be considered when performing precise measurements. In this research paper, the displacement of a pillar was calculated as a result of the temperature changes in the pillar, and then an experiment was performed in which the pillar was heated from one side, and the horizontal displacement of the fixed screw for forced centring was measured. Both, calculations and measurements, show that at a temperature difference of 16.2 °C, the fixed screw on a 1.5 m high pillar moves by approximately 1 mm, which is a displacement that should be taken into account in precise measurements.