Short communication, Note

https://doi.org/10.4154/gc.2021.08

The preliminary inventory of coseismic ground failures related to December 2020 – January 2021 Petrinja earthquake series

Davor Pollak orcid.org/0000-0001-5174-9781 ; Croatian Geological Survey, Department of Hydrogeology and Engineering Geology, Zagreb, Croatia
Vlatko Gulam ; Croatian Geological Survey, Department of Hydrogeology and Engineering Geology, Zagreb, Croatia
Tomislav Novosel ; Croatian Geological Survey, Department of Hydrogeology and Engineering Geology, Zagreb, Croatia
Radovan Avanić ; Croatian Geological Survey, Department of Geology, Zagreb, Croatia
Bruno Tomljenović ; Faculty of Mining, Geology and Petroleum Engineering, Zagreb
Nina Hećej ; Croatian Geological Survey, Department of Hydrogeology and Engineering Geology, Zagreb, Croatia
Josip Terzić ; Croatian Geological Survey, Department of Hydrogeology and Engineering Geology, Zagreb, Croatia
Josip Stipčević ; Faculty of Science, University of Zagreb, Croatia
Mario Bačić ; Faculty of Civil Engineering, University of Zagreb, Croatia
Tomislav Kurečić ; Croatian Geological Survey, Department of Geology, Zagreb, Croatia
Mario Dolić ; Croatian Geological Survey, Department of Hydrogeology and Engineering Geology, Zagreb, Croatia
Iris Bostjančić ; Croatian Geological Survey, Department of Hydrogeology and Engineering Geology, Zagreb, Croatia
Lara Wacha ; Croatian Geological Survey, Department of Geology, Zagreb, Croatia
Ivan Kosović ; Croatian Geological Survey, Department of Hydrogeology and Engineering Geology, Zagreb, Croatia
Marko Budić ; Croatian Geological Survey, Department of Geology, Zagreb, Croatia
Matija Vukovski ; Croatian Geological Survey, Department of Geology, Zagreb, Croatia
Nikola Belić ; Croatian Geological Survey, Department of Geology, Zagreb, Croatia
Marko Špelić ; Croatian Geological Survey, Department of Geology, Zagreb, Croatia
Vlatko Brčić ; Croatian Geological Survey, Department of Geology, Zagreb, Croatia
Josip Barbača ; Croatian Geological Survey, Department of Geology, Zagreb, Croatia
Branko Kordić ; Croatian Geological Survey, Department of Geology, Zagreb, Croatia
Damir Palenik ; Croatian Geological Survey, Department of Geology, Zagreb, Croatia
Radovan Filjak ; Croatian Geological Survey, Department of Geology, Zagreb, Croatia
Tihomir Frangen ; Croatian Geological Survey, Department of Hydrogeology and Engineering Geology, Zagreb, Croatia
Mirja Pavić ; Croatian Geological Survey, Department of Hydrogeology and Engineering Geology, Zagreb, Croatia
Kosta Urumović ; Croatian Geological Survey, Department of Hydrogeology and Engineering Geology, Zagreb, Croatia
Marin Sečanj
Bojan Matoš ; University of Zagreb, Faculty of Mining, Geology and Petroleum Engineering, Zagreb, Croatia
Marin Govorčin ; Faculty of Geodesy, University of Zagreb, Croatia
Meho Saša Kovačević ; Faculty of Civil Engineering, University of Zagreb, Croatia
Lovorka Librić ; Faculty of Civil Engineering, University of Zagreb, Croatia

Abstract

The most recent major earthquake series struck near Petrinja (December 29th 2020 M 6.2), and triggered extensive ground failures in the wider area of Petrinja, Sisak and Glina. Coseismic ground failures including subsidence dolines, liquefaction and landslides have been documented over a large area by various experts and teams. These data are stored in the newly created inventory, which is openly presented in this paper. This inventory is administered and updated by the Croatian Geological Survey, and will be available online via a Web Map Service (WMS) (www.hgi-cgs.hr). The aim of the inventory is to not only provide data for the development of susceptibility maps and more detailed exploration for possible remediation measures, but also to define the priorities for immediate action. The earthquake triggered the rapid development of dropout dolines which endanger the local populations of the villages of Mečenčani and Borojevići. This is still an ongoing process in the vicinity of the houses and therefore in-situ exploration started immediately. Liquefaction related to alluvial sediments of the Sava, Kupa and Glina rivers occurred almost exclusively in loose and pure sands, and was accompanied by sand boils, subsidence and lateral spreading. Liquefaction also presents a greater hazard because settlement of houses and river embankments occurred. Lateral spreading caused failures of river flood embankments and natural river banks. According to the data known to date, the majority of the coseismic landslides were reactivated with minor displacements. Despite that, it has been recognised that houses at the edge, or in landslide colluvium suffered greater damage than other houses located outside the landslide impact zone.

Keywords

Petrinja; earthquake; ground failures; inventory; dropout dolines; liquefaction; landslides

Hrčak ID:

259971

URI

https://hrcak.srce.hr/259971

Publication date:

7.5.2021.

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