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1
Content available remote Programme of geodynamic and environmental studies in the region of Plitvice Lakes
100%
Medak D. , Pribičević B.
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tom z. 2/57
219-224
2
Content available remote Usage of the geoid surface with geological-geophysical data for interpretation of recent crustal movements determined by GPS
80%
Pribičević B. , Medak D. , Prelegovic E.
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tom z. 2/57
213-217
3
Content available Application of 3D terrestrial laser scanning in geodynamic monitoring
80%
Medak D. , Pribičević B. , Medved I.
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2008
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tom z. 1/84
49-53
EN
During last 10 years, geodesists from the Faculty of Geodesy, University of Zagreb, together with geologists and tectonicians established and performed a number of series of GPS-measurements on the Geodynamic Network of the City of Zagreb. The results of these campaigns emphasized the spots with higher level of geodynamic activity, resulting in damages on objects: houses, walls, churches. Therefore, the technology of threedimensional laser scanning has been employed in order to capture much more detailed picture of fast movements. In the first experimental phase of the project, only rapidly sliding areas are observed. The main hypothesis of proposed research is to check if the technology of precise laser scanning is able to produce comparable point clouds showing the movements of objects in the field. As an additional source of information, this research should contribute to the better understanding of the processes below the Earth surface.
4
Content available Precise geodetic and hydrographic measurements in Karst areas
80%
Pribičević B. , Medak D. , Dapo A.
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2008
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tom z. 1/84
55-59
EN
Recent advances in GPS-technology (GNSS) enable hydrographic surveyors to capture the topography of the bottom and the water surface with even more accuracy. Faculty of Geodesy, University of Zagreb, recently acquired the latest technology for performing the precise hydrographic surveying: Trimble R8 GNSS receiver that is going to be used with already used echo sounding equipment. The GSM signals are used for transmitting corrections from the base station to the rover. Thus, it is possible to use single-frequency DESO 14 for two-frequencies bathymetry through repeating the course of the vessel on exactly the same points with both transducers. It is expected that the new technology shall yield more accurate results and increase measurement speed, because the OTF times should be significantly shortened.
5
Content available Geology, tectonics, geodesy and geodynamics of Croatia
80%
Medak D. , Pribičević B. , Prelogović E.
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tom z. 5/80
285--300
EN
This paper summarizes recent research activities on merging the geodetic, geologic and neotectonic evidence of geodynamics in Croatia. The area of the City of Zagreb, which is the boundary zone of Eastern Alps, Dinnarides and Pannonian Basin is included as well. It is shown here that the evidence for fractures of Eastern Adriatic differs from the previous hypotheses. This conclusion is derived from the results of various geodetic measurements: satellite positioning (GPS), astro-geodetic measurements of deflections of the vertical. These results are combined with geologic measurements and results of seismic activity studies in order to give more detailed and more accurate picture of the current situation in the tectonically very active region of Dinnarides. Several GPS-campaigns performed in the City of Zagreb area are examined as well. Due to the proximity of Croatian capitol, special attention has been paid to the effects of possible hazard on construction code.
6
Content available remote Geodetic and geologic research of recent tectonic activity Dinarides
80%
Pribičević B. , Medak D. , Prelogović E.
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tom nr 4/71
125--131
EN
Initial tectonic movements of Adriatic Microplate result in dominating compression in the area of Dinarides. Collected structural data, compared with surface and depth data, with seismological and geodetic measurements taken in the account enabled the classifications of structures. Deformations and movements of structures directly depend on the stress orientation. This orientation varies from between 340-160° to 30-210°. In order to visualize the stress orientation, formation of different types of structures and their movements, examples of compressional structures are shown, as well as rotations of structures and conditions of creation of extensional structures. Finally, the map with fault zones is included, too. The data show narrowing of the area of Adriatic Microplate and the existence of its southern and northern part. Both parts are changing movement directions, leading to more tectonic activity. In active areas, formation of structures is recognized, and causality with fault locations and seismic activity is established. The amplitudes of tectonic movements derived from geodetic measurements between 1994 and 1998 represent important contribution for better understanding the tectonic activities in the area.
7
Content available remote Is Adria a promontory or does it exist as an independent microplate?
61%
Altiner Y. , Marjanovic-Kavanagh R. , Medak D. , Medić Z. , Prelegović E. , Pribičević B. , Seliškar A.
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tom z. 2/57
224-229
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