The 1998 Krn Mountains earthquake with a maximum intensity of VII-VIII on the EMS-98 scale caused extensive environmental effects in the Julian Alps. The application of intensity scales based mainly on damage to buildings was limited in the epicentral area, because it is a high mountain sparsely populated area. On the other hand the effects on the natural environment were prominent and widespread. These facts and the introduction of a new ESI 2007 scale motivated a research aimed to evaluate its applicability to this event. All environmental effects - rockfalls, landslides, secondary ground cracks and hydrogeological effects - were described, classified and evaluated by a field survey, analysis of aerial images and macroseismic questionnaires. It was realized that only rockfalls (78 were registered) are widespread enough to be used for intensity assessment, together with the total size of affected area. They were classified into five categories according to their volume. Distribution of very large, large and medium size rockfalls has clearly defined an elliptical zone, elongated parallel to the strike of the seismogenic fault, for which the intensity VII-VIII was assessed. This isoseismal line was compared to the EMS-98 isoseism derived from damage-related macroseismic data and a similar shape was obtained. The ESI 2007 scale has proved to be an effective tool for intensity assessment in sparsely populated mountain regions not only for very strong, but for moderate earthquakes as well.
COBISS.SI-ID: 969822
An assessment of the relationship between displacement rates of objects located in areas of active soil creep and rainfall intensities was performed using a permanent-scatterer technique of synthetic aperture radar interferometry. The study focussed on two areas in central Slovenia during the period between April 1992 and December 2000. Displacement rates related to creeping processes were compared with the different durations and intensities of rain in order to assess the threshold values that initiate the creeping process and to assess the relationship between the speed of the movement and the precipitation events in both areas. Based on very similar rates of tectonic uplift in the event of no rain, areas with high rates of tectonic uplift and areas of active soil creep may be related.
COBISS.SI-ID: 2046549
We studied well exposed Middle Triassic (Anisian – Ladinian) sections in the Julian Alps (Mt. Prisojnik) and in Kamnik-Savinja Alps (Mt. Križevnik and Mt. Ute). In the Upper Anisian, start of the tectonic movements, extensional rotation of blocks triggered formation of the small-scale and limited halfgrabens, filled with material from the tectonically predisposed footwall escarpments. Volcanism associated this turbulent environment. Coevally, red pelagic limestones with reach radiolarian and conodont fauna deposited, which enabled us precise datations of event and consequently installed it in the broader paleogeography of the Southern Alps.
COBISS.SI-ID: 2081109
The lithostratigraphic subdivision of the Upper Permian and Triassic system of the Karakorum Range in Pakistan is revised on the basis of new biostratigraphic data (conodonts, foraminifera, palynomorphs). Our contribution to this interdisciplinary research of the international group is through determination of benthic foraminifera from Aghil and Ashtigar Formations. The Norian and/or Rhaetian age is determined for the Aghil Formation. The petrography of the Ashtigar Formation points at tectonic subsidence of the sedimentary system at the end of Triassic. The provinence of the volcanic material and the deep-water clasts is believed to be the obducted Palaeo-Tethyan margin.
COBISS.SI-ID: 2100821
In collaboration with two of the most acknowledged specialists for Paleozoic coral fauna, a thorough taxonomic revision within one of the coral groups has been made. A new genus Sloveniaxon was introduced that comprises specimens of same form from the entire worldwide fossil record, which have been ascribed to different groups. Corals of this group from Slovenia also bear an important paleoecological information and thus help in reconstructing the paleogeographic model of the Southern Alps in Permian period.
COBISS.SI-ID: 2065237