Working Areas
Geographical areas and transects of interest to BALTIC GAS objectives include
- a general transect along the salinity gradient from 32 ‰ in Skagerrak to 2 ‰ in the Bothnian Bay,
a transect from shallower (with no gas) to thicker (with gas) Holocene mud layers in both high and low salinity regions (e.g. Aarhus Bay, the Arcona Basin and the Bothnian Bay), - an eutrophication gradient from the bottom of a fjord towards the Baltic Sea (Himmerfjärden on the Swedish east coast),
- gas seepage areas in northern Gdansk basin where pock marks are present,
-
depositional basins with accumulation of Holocene mud (Bornholm Basin, Arcona Basin, Mecklenburger Bay) which will be studied during student courses and thus add seismo-acoustic data.
Cruises 2009
Cruise reports may be downloaded from RESULTS \ Cruise reports
February 20 – 27, 2009
Research vessel: RV Oceania (Gdansk, Poland)
Chief scientist: Zygmunt Klusek (PAS)
BALTIC GAS scientists: Zygmunt Klusek (PAS), Dmitry Dorokhov (RAS)
Research area: Southern Baltic, Gulf of Gdansk, Vistula River mouth
Sampling performed: Collected acoustic (seismic) data in the areas with potential presence of shallow gas, active gas seepage, and pockmarks. Survey performed in near-bottom water column and seafloor with hydro-acoustic instruments working in a broad frequency range.
Date: April 21 – 25, 2009
Research vessel: RV Aranda (in cooperation with BONUS project INFLOW)
Chief scientist: Harry Kankaanpää (SYKE Marine Center, Finnland)
BALTIC GAS scientists: Sabine Flury (CfG), Jørn Bo Jensen (GEUS)
Research area: Station JML (water depth: 80m) and Station F69 (water depth: 192m) - during the first Leg of the cruise.
Sampling performed: Sediment and pore water sampling of gassy sediments to determine profiles and fluxes of CH4 and SO42- as well as profiles of H2S, DIC, TN and TC.
Date: May 12 – 17, 2009
Chief scientist: Volker Brüchert (SU)
BALTIC GAS scientists: Volker Brüchert (SU), Tim Ferdelman (MPI), Thang Manh Nguyen (MPI) Maja Reinholdsson (LU)
Research area: Salinity gradient in Himmerfjärden
Sampling performed: Baseline pore water, gas, and solid phase sediment sampling, as well as sediment sampling for experimentation and flux measurements. In addition, this expedition provided the initial training for BONUS doctoral students Thang Manh Nguyen and Maja Reinholdsson.
Date: June 4 -17, 2009 Research vessel: RV Aranda. HYPER-cruise. Chief scientist: Alf Norkko, Marine Research Centre, Finnish Environment Institute, Finland. BALTIC GAS scientists: Two participants from two BALTIC GAS institutions. Date: June 30 – July 3, 2009 Research vessel: RV Ladoga Chief Scientist: Nikolay Pimenov, Russian Academy of Sciences, Winogradsky Institute of Microbiology, Russia. BALTIC GAS scientists: Six participants from one BALTIC GAS institution. Date: August 28 – September 9, 2009 Research vessel: RV Merian. Amber-cruise in cooperation with INFLOW, BALTIC-C, and BALTIC GAS. Chief scientist: Falk Pollehne, Baltic Sea Research Institute Warnemünde, Germany. BALTIC GAS scientists: One participant Date: November 5 – 16, 2009 Research vessel: RV Oceania. BALTIC GAS-cruise. Chief Scientist: Zygmunt Klusek, Institute of Oceanology Polish Academy of Science, Poland. BALTIC GAS scientists: 14 participants from 4 BALTIC GAS institutions. Date: November 27 – December 17, 2009 Research vessel: RV Poseidon. BALTIC GAS-cruise. Chief Scientist: Rudolf Endler, Baltic Sea Research Institute Warnemünde, Germany. BALTIC GAS scientists: 11 participants from 4 BALTIC GAS institutions.