Keywords: high-resolution geophysics, active tectonics.

 

Education of the Young Researcher:
2019: BSc, Mapping the thickness of Quaternary sediments in the Iška alluvial fan using seismological microtremors method
2022: MSc, Microgravimetric survey in Povir and Škocjanske jame area

 

Content:

Slovenia and Croatia are located on an active convergent boundary between the Adriatic microplate and the Eurasian plate, characterised by compressive active fault systems and moderate seismicity. Identification and characterisation of such active faults solely by means of structural geologic and tectonic geomorphological mapping can be difficult due to the complex regional structural setting, overprint of various tectonic phases, low levels of deformations, high level of erosion and the influence of both karstic and slope mass processes, High-resolution geophysical and tectono-geomorphological investigations will be conducted on at least three important active faults that are insufficiently seismotectonically characterized, belong to different tectonic regimes, exhibit low-levels of deformation and have a vastly different thickness and compostiton of overlying sediments. This presents a challenge for the optimization of survey planning, conducting field measurements and analysing the obtained data for different geological settings, which will require new methodological approaches and solutions. The end goal of geophysical investigations is the identification of possible deformations of Quaternary sediments, the evaluation of fault zone complexity and its location in the bedrock, and to evaluate the potential of candidate sites for future paleseismological investigations. These results will represent an assesment of individual geophysical method for further studies of active faults in a similar geological setting. The integration of multiple high-resolution geophysical methods will enable to recognize and discern the influence of deformation mechanisms on Quaternary sedimentation processes. The defined seismotectonic parameters (fault zone width, fault strike and dip, vertical and horizontal offsets, surface rupture recurrence, fault slip-rate and its variability along the fault) will contribute to the Database of Active Faults. This Database represents one of the key input data for the new iteration of the Seismic Hazard Model for Slovenia with the PSHA method, evaluation of maximum earthquake magnitude and its recurrence, and the evaluation of the probability of a surface rupture event.

Selected Bibliography:

RUPAR, Lovro, GOSAR, Andrej. Mapping the thickness of Quaternary sediments in the Iška alluvial fan (Central Slovenia) using microtremor method. Acta geodynamica et geomaterialia. 2020, vol. 17, no. 2, pp. 177-190. ISSN 1214-9705. DOI: 10.13168/AGG.2020.0013.

ZAJC, Marjana, KOROŠA, Anja, URBANC, Janko, RUPAR, Lovro, KOÇYIĞIT, B., KRIVIC, A., PEČAN, Urša, GLAVAN, Matjaž. GPR and UAV remote sensing for detecting changes in soil moisture across a heterogeneous agricultural field. V: 29th European Meeting of Environmental and Engineering Geophysics (NSG2023) : 3-7 September 2023, Edinburgh, UK. Bunnik: European Association of Geoscientists and Engineers, 2023. 4 p. DOI: 10.3997/2214-4609.202320145.

JAMŠEK RUPNIK, Petra, RUPAR, Lovro, NOVAK, Ana. High-resolution lidar and UAV-based geomorphological study reveals Quaternary surface displacements along the Raša Fault in SW Slovenia. In. 7th Regional Scientific Meeting on Quaternary Geology ; November 14th - 15th 2024, Zagreb, Croatia : karst research and the 100th anniversary of the birth of Mirko Malez : abstract book. Zagreb: Croatian Academy of Sciences and Arts, 2024. pp. 77-78. ISBN 978-953-347-593-6.

JAMŠEK RUPNIK, Petra, MENCIN GALE, Eva, URŠIČ ARKO, Aleša, RUPAR, Lovro, JEŽ, Jernej, NOVAK, Ana, MASLAČ, Josipa, ANŽEL, Andrej, ATANACKOV, Jure. Initial results from paleoseismological investigations of the Raša Fault in SW Slovenia. In. 7th Regional Scientific Meeting on Quaternary Geology ; November 14th - 15th 2024, Zagreb, Croatia : karst research and the 100th anniversary of the birth of Mirko Malez : abstract book. Zagreb: Croatian Academy of Sciences and Arts, 2024. pp. 44-46. ISBN 978-953-347-593-6.

MASLAČ, Josipa, CINTI, Francesca Romana, PANTOSTI, Daniela, BAIZE, Stéphane, BAKRAČ, Koraljka, GRIZELJ, Anita, BENEDETTI, Lucilla, CIVICO, Riccardo, PUCCI, Stefano, HENRIQUET, Maxime, FILJAK, Radovan, BELIĆ, Nikola, ŠPELIĆ, Marko, BUDIĆ, Marko, BARBAČA, Josip, JAMŠEK RUPNIK, Petra, ZAJC, Marjana, RUPAR, Lovro, KOSOVIĆ, Ivan, TESTA, Alessio, HAJEK-TADESSE, Valentina, MILOŠEVIĆ, Monika, BOŠNJAK, Marija, KORDIĆ, Branko. First paleoseismological study in Croatia: preliminary results after the 2020earthquake on the Petrinja - Pokupsko fault. In. 7. hrvatski geologški kongres s međunarodnim sudjelovanjem = 7th Croatian Geological Congress with international participation : 02. - 04. 10. 2023, Poreč : abstracts book. Zagreb: Croatian Geological Survey, 2023. pp. 112-113. Book of the Sazetaka (Croatian Geological Congress)