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Preliminary results M74/2
Working area M74/2
Cruise leg M74/2
Objectives:
The main objectives during M74-2 were to identify and locate active seepage on the Makran accretionary margin offshore Pakistan as well as to understand the role of the Oxygen Minimum Zone (OMZ) in various nutrient cycles and reduction processes. The first goal of the two was tackled by multi-frequency geophysical profiling - bathymetric, parametric sediment echosounder, deep-tow side scan sonar, and multichannel seismic data acquired simultaneously. Within the OMZ, the water column, sediment-water interface, and the shallow subsurface were sampled with the help of newly contrived measuring and sampling techniques, in order to identify its influence on microbial activity.
Ship's track of cruise leg METEOR 74/2, covering water depths from 200 m to more than 3000 m.
Data collected:
- 10 north-south profiles with simultaneous acquisition by TOBI / Seismics
- 6 CTD stations
- 11 MUC (Multicorer) stations
- 4 stations with BWS (Bottom Water Sampler) and BBL (Benthic Boundary Layer Profiler)
- 8 gravity cores (six times 12 m, twice 6 m length)
- 8 TV-sled deployments
- 82 seismic profiles for detailed investigation of special targets
- multibeam bathymetric and sediment echosounder data during the entire cruise
Participants M74/2
Participants of M74/2 on the helideck.
Participating Institutions
RCOM: Research Center Ocean Margins, University of Bremen, Germany
AWI: Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany
MPI: Max Planck Institute for Marine Microbiology, Bremen, Germany
NIO: National Institute of Oceanography, Karachi, Pakistan
NOC: National Oceanographic Centre Southampton, UK
- Prof. Dr. Volkhard Spiess, Chief Scientist, RCOM
- Ludmilla Baumann, Pore water analysis, AWI
- Markus Brüning, Side scan sonar / Bathymetry, RCOM
- Dr. Gavin Collins, Biogeochemistry, MPI
- Feng Ding, Seismics, RCOM
- Dr. Noémi Fekete, Seismics, RCOM
- Annika Förster, Geotechnics, RCOM
- Torben Gentz, Pore water analysis, AWI
- Syed Waseem Haider, Observer, NIO
- Moritz Holtappels, Biogeochemistry, MPI
- Dr. Tim Le Bas, TOBI side scan sonar, NOC
- Duncan Matthew, TOBI side scan sonar, NOC
- Lars Max, Seismics, RCOM
- Martina Meyer, Biogeochemistry, MPI
- Dr. Bramley Murton, TOBI side scan sonar, NOC
- Benedict Preu, Seismics, RCOM
- Ian Rouse, TOBI side scan sonar, NOC
- Dr. Heiko Sahling, TV sled, RCOM
- Prof. Dr. Michael Schlüter, Pore water analysis, AWI
- Karsten Schubert, Seismics, RCOM
- Dr. Tilmann Schwenk, Seismics, RCOM
- Ireen Vieweg, Biogeochemistry, MPI
- Andrew Webb, TOBI side scan sonar, NOC
- Nina Wittenberg, Parasound / Bathymetry, RCOM
- Dr. Marcos Yoshinaga, Biogeochemistry, RCOM