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Geological and seismological aspects of geodynamics in Kvarner area - unveiling of the Kvarner fault (GEOSEKVA)

 

 

Project title: Geological and seismological aspects of geodynamics in Kvarner area - unveiling of the Kvarner fault
Acronym: GEOSEKVA
Principal Investigator: Tvrko Korbar
Duration of the project: 4 years
Begining of the project: 20/03/2017
Granting agency: Croatian Science Foundation (HRZZ)
Project web page: https://geosekva.wordpress.com//

 

 

Summary:

The wider area of Kvarner has rapid urbanistic and infrastructural growth that, concerning the complex geological structure of this area, increases vulnerability of geohazard events and the risk. Rijeka epicentral area is known for the frequent occurrence of relatively weak earthquakes and occasional occurrence of moderate or large earthquakes, which, according to historical documents, caused locally very strong damage. The probable cause of the earthquakes is the dextral horizontal movement along one of the major fault zones with a Dinaridic strike, that is probably fragmented by a still inadequately defined system of transversal Kvarner faults, which in combination with the assumed gravitational sliding of early orogenic thin-skinned tectonic cover, probably resulted with a very complex transpressional-transtensional regime in the Kvarner region. With the aim to improve the interpretation of the earthquake mechanisms, there is a growing need for 3D geological models based on modern lithostratigraphic maps, borehole data, and interpreted seismic lines. Neotectonics can be detected by analyses of the youngest deposits on the shallow sub-bottom (geo-acoustical method), by remote and direct study of selected geomorphological features, and by (re)interpretation and dating of Quaternary deposits on land. Compiling the data in the integrated seismotectonic model would be a quality base for the next step, which would include further interdisciplinary research, i.e. integration of more detailed geological and seismological, as well as geodetic data, with the aim to build a relevant geodynamic model of the Kvarner region.

    21 persons will be included in the project:
  • 12 collaborators from HGI (Croatian Geological Survey - core institution);
  • 2 collaborators from GFZ (Department of Geophysics, Faculty of Science, University of Zagreb);
  • 1 collaborator from UniZD (Department of Geography, University of Zadar);
  • 2 foreign collaborators: 1 from UniTS (Università degli Studi di Trieste, Department of Mathematics and Earth Sciences), and 1 from INGV (The Istituto Nazionale di Geofisica e Vulcanologia, Roma, Italy);
  • 4 consultants on the project: 1 from LIAG: Leibniz Institute for Applyed Geophysics, Hannover, Germany), 1 from RGNF (Faculty of Mining, Geology and Petroleum Engineering, University of Zagreb), 1 expert from the project area, and one from AZU (Croatian Hydrocarbon Agency).