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Sediment coring of Brač Channel and Kaštela Bay within the scope of the Internal research project “Rivers Into MAD” (RIM)

Planned sediment corings within the scope of the Internal research project “Rivers Into MAD” (RIM) were carried out in September 2025 in the area of the Brač Channel and Kaštela Bay.

The Project aims to determine how the now-submerged paleoenvironments of the Jadro and Cetina rivers were formed during the last glacial maximum. The highly demanding sediment coring was carried out using the platform of the Croatian Geological Survey Q2, which consists of a tripod with electric winches and uses a 3 m or 2 m long piston corer. The cored sediment is retained within a PVC tube and transported to the HGI’s Croatian Core Repository. The platform is positioned using the Minn Kota Terrova GPS trolling system and then anchored with four anchors, allowing continuous coring at the site.

The following phase of the project incorporates initial measurements on the cores and their detailed analysis.

The research was conducted by Dr. Slobodan Miko, Filip Šegović, Hrvoje Burić, Dr. Nikolina Ilijanić, and Dr. Ozren Hasan. This research was conducted in the scope of the internal research project „Rivers Into MAD - Resolving the Jadro and Cetina palaeoriver landscapes during the Last Glacial Maximum (RIM)“ at the Croatian Geological Survey, funded by the National Recovery and Resilience Plan 2021–2026 of the European Union – NextGenerationEU, and monitored by the Ministry of Science and Education of the Republic of Croatia.

Q2 platform positioned for the coring in the Kaštela Bay.