Team members Ozren Hasan and Nikolina Ilijanić are participating on the scientific cruise in the Adriatic Sea on research vessel (RV) Poseidon (Kiel, Germany). Cruise started from Heraklion on Crete on 27th of May and will end on 16th June in Dubrovnik. They are experiencing the off-shore life on a 60 m-ship, which includes drilling with gravity corer (3, 5 or 8 m core tube), sampling of the sea-surface sediments using multi corer, Frahm corer, box corer and Van Veen grab corer, sampling of the plankton at various depth and measurements of conductivity, temperature, oxygen and fluorescence of the sea water column. The cruise entitled „Micropaleontology, Actuopaleontology, and Environmental Baseline Study of the Holocene to latest Pleistocene in the northern and eastern Adriatic Sea basin“ (Code name: APTA: Actuo-Paleontology Trans-Adriatic) is organized by the chief scientist Hartmut Schulz from the University of Tübingen, in coordination with Slobodan Miko from the Croatian Geological Survey. The 21 days-long cruise is financed by the German Research Foundation (DFG). The scientific crew make James Nebelsick and Tobias Grun from University of Tübingen, Petra Heinz, Julia Wukovits, Patrick Bukenberger and Martin Zuschin from Vienna University, Guiseppe Siena and Nydia Catalina Reyes Suarez from National Institute of Oceanography in Trieste and Ozren Hasan and Nikolina Ilijanić from Croatian Geological Survey.
CTD (Coductivity Temperature Depth) is deployed routinely at most stations at variable depths, it has a bulk flourescence sensor and bottles for water sampling. MultiNet (5 nets) is also deployed at variable depths (ie 100 and 700 m) for plankton sampling using 100 and 63 µm nets. Samples are immediately deep frozen and stored.
Ozren Hasan and Nikolina Ilijanić are responsible for operating the Gravity Corer (GC), heavy instrument that includes heavy work setting up of variable 3 and 5 m core tubes up to 10 m total length. Cores are immediately cut into 1m-sections, capped, sealed, labeled and stored/cooled to be opened in Tübingen. Short cores (< 50 cm) are collected using the Multi Corer (MUC) able to collect as much as 8 cores in the same time. Only the best are photographed, sliced by 1 or 2 cm interval and packed into plastic bags. On selected sites best sediment surface samples are collected (0-1, 1-2 cm) and also taken for incubation foraminifera experiments on board. Frahm Corer is used to collect up to 100 cm-long cores in shallower depths, the cores are photographed, sliced and packed in plastic bags. Van Veen Grab Corer is deployed mostly at shallow depths, robust, effective and it is used for instance surface and shallow benthos sieved/washed. Box Corer (BC) is used to collect up to 20 cm-long cores with well preserved sediment surface. Cores are photographed and sliced, than packed into plastic bags.
We wish them succesfull cruise, nice weather and lots of cores and sediments from the Adriatic Sea!
Fig. 1. Operating the Gravity Corer, Ozren Hasan and Hartmut Schulz on the Bridge and slicing the cores into 1m-sections.
Fig. 2. MultiCorer sampling, handled by the whole team.
Fig. 3. Setting up Frahm Corer and taking the core, by Tobias Grun, James Nebelsick, Hartmut Schulz and Martin Zuschin.
Fig. 4. Box corer sampling by Tobias Grun.
Fig. 5. Grab sampling.
Fig. 6. Photographing the multi corer and Frahm corer sediment cores, ready to be sampled (sliced by 1 or 2 cm interval) and washing of grab samples, work of the whole team, under supervision of chief scientist Hartmut Schulz.
Fig. 7. CTD, operated by Guiseppe Siena and Nydia Catalina Reyes Suarez.
Fig. 8. MultiNets, operated by Petra Heinz, Julia Wukovits and Patrick Bukenberger.
Fig. 9. Night work and taking samples from the grab corer, by James Nebelsick and Tobias Grun.