DOC analysis

DOC analysis

DOC analysis

Variable fluxes of dissolved organic carbon species (DOC) due to the interaction between groundwater discharge and development of permafrost can potentially disturb the carbon cycle as well as biogeochemistry in the bottom water. For this reason, we also measure DOC concentration. The DOC analysis are performed in TOC-L analyzer (Shimadzu). In order to remove inorganic carbon a filtered and acidified water sample, before measurement, is sparged with synthetic air. The method is based on oxidation method with Pt catalyst in high temperature (680°C). Non-purgeable organic carbon compounds are combusted and converted to CO2, which is detected by a nondispersive infrared detector (NDIR). Person responsible for these analysis is Aleksandra Winogradow, Ph.D. .

Nutrients analysis

Nutrients analysis

Nutrients analysis

The ArcticSGD project investigates all aspects of submarine groundwater discharge (SGD), as an essential component of biogeochemical budgets. Fresh SGD is a source of new nutrients, and the study of nutrients helps to understand nutrient cycles (recycled nutrients from sediments or new nutrients from groundwater) in the European arctic. We collected 600 samples from seawater and porewater in Hornsund, Kongsfjorden, Krossfjorden, Isfjorden, and Norwegian fjords. 500 samples are analyzed at biogeochemistry laboratory in IOPAN and remind of samples are analyzing soon. We will collect nutrients samples during the next cruise to Lofoten, from seawater and porewater to study SGD and the nutrients cycle in the canyons. Video Reza Saghravani

Lofoten-Vesterålen cruise

Lofoten-Vesterålen cruise

Lofoten-Vesterålen cruise

We are prepared for our second cruise in the Lofoten-Vesterålen  with RV “G.O. Sars”  that is owned by the Institute of Marine Research (IMR) in Bergen. We will start on 29th of November. We are planning to collect column water from ROV and rosette, sediments and pore water for DOC, DIC, nutrients, methane, groundwater for endmembers, biological samples etc. Keep fingers crossed!  Fot. Reza Saghravani

GasBench tests

GasBench tests

GasBench tests

GasBench II, which is universal on-line gas preparation and introduction system. The combination of GasBench interface and Isotope Ratio Mass Spectrometry is a promising method for the δ15N analysis of samples containing trace amounts of nitrogen. Some time ago we solved problem with high background of nitrogen in the atmosphere and RSD of obtained analysis! Tests were prepared in a special glovebox designed by Dr Marta Borecka and made by Mr. Zbigniew Ciećwierz. Now we will try to figure out troubles with background of mass 30N2. Establishment of the methodology on GasBench/isotope ratio mass spectrometry (GasBench/IRMS) system will allow us to determine anammox and denitrification processes occurring in the marine environment. Fot. Magdalena Diak

Sediment core subsampling

Sediment core subsampling

Sediment core subsampling

Sediment core subsampling was done by PhD student Reza Saghravani, Principal Investigator of ArcticSGD project Dr. Beata Szymczycha and Dr. Eng. Magdalena Diak. Core were cut every 10 cm. Dr. Aleksandra Winogradow centrifuges the sediment to extract pore water from cores for further analysis. Special thanks to Prof. Zajaczkowski and his team in Paleoceanography Department. Fot. Reza Saghravani and Magdalena Diak

Study area (Arex’21)

Study area (Arex’21)

Study area (Arex’21)

The study areas were located in the Kongsfjord – Krossfjord, Isfjorden and Norwegian Fjords. Our research contribute to fulfill existing gaps in the knowledge in the Arctic hydrology. We have tremendous problem due lack of enough information about the at least basic water cycle mechanism, budget and discharge. Moreover, the ongoing climatic changes are visible to the naked eye and have significant impact on these processes. We can compare photos observed during Arex’21 cruise and photo of  Kongsfjord  taken by S. Gerland from publication Svendsen et al. 2002 (Svendsen, Harald, et al. “The physical environment of Kongsfjorden–Krossfjorden, an Arctic fjord system in Svalbard.” Polar research 21.1 (2002): 133-166.). We would like to kindly invite you to watch videos and photos taken and prepared by PhD student Reza Saghravani