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Datasets of project "Processes at the Passive Continental Margins"

Mostrando recursos 1 - 20 de 26

  1. Limitations of microbial hydrocarbon degradation at the Amon Mud Volcano (Nile Deep Sea Fan)

    Felden, Janine; Lichtschlag, Anna; Wenzhöfer, Frank; de Beer, Dirk; Feseker, Tomas; Pop Ristova, Petra; de Lange, Gert Jan; Boetius, Antje
    The Amon mud volcano (MV), located at 1250 m water depth on the Nile Deep Sea Fan, is known for its active emission of methane and non-methane hydrocarbons into the hydrosphere. Previous investigations showed a low efficiency of hydrocarbon-degrading anaerobic microbial communities inhabiting the Amon MV center in the presence of sulphate and hydrocarbons in the seeping subsurface fluids. By comparing spatial and temporal patterns of in situ biogeochemical fluxes, temperature gradients, pore water composition and microbial activities over three years, we investigated why the activity of anaerobic hydrocarbon degraders can be low despite high energy supplies. We found that...

  2. Profile of sediment echo sounding with links to ParaSound data files and swath sonar multibeam bathymetry during METEOR cruise M70/2b

    Dupré, S; Buffet, G; Mascle, Jean; Foucher, Jean Paul; Gauger, Steffen; Boetius, Antje; Marfia, C; AsterX AUV Team; Quest ROV Team; BIONIL Scientific Party
    Two highly active mud volcanoes located in 990-1,265 m water depths were mapped on the northern Egyptian continental slope during the BIONIL expedition of R/V Meteor in October 2006. High-resolution swath bathymetry and backscatter imagery were acquired with an autonomous underwater vehicle (AUV)-mounted multibeam echosounder, operating at a frequency of 200 kHz. Data allowed for the construction of ~1 m pixel bathymetry and backscatter maps. The newly produced maps provide details of the seabed morphology and texture, and insights into the formation of the two mud volcanoes. They also contain key indicators on the distribution of seepage and its tectonic...

  3. Pore water geochemistry of Nile Deep Sea Fan seep sediments measured during the BIONIL expedition in 2006 at station M70/2b_812_PUC-48

    Lichtschlag, Anna; Boetius, Antje; Felden, Janine; de Beer, Dirk

  4. Pore water geochemistry of Nile Deep Sea Fan seep sediments measured during the BIONIL expedition in 2006 at station M70/2a_784_PUC-9

    Lichtschlag, Anna; Boetius, Antje; de Beer, Dirk

  5. Pore water geochemistry of Nile Deep Sea Fan seep sediments measured during the BIONIL expedition in 2006 at station M70/2a_773_PUC-52

    Lichtschlag, Anna; Boetius, Antje; de Beer, Dirk

  6. Pore water geochemistry of Nile Deep Sea Fan seep sediments measured during the BIONIL expedition in 2006 at station M70/2a_773_PUC-40

    Lichtschlag, Anna; Boetius, Antje; Felden, Janine; de Beer, Dirk

  7. Pore water geochemistry of Nile Deep Sea Fan seep sediments measured during the BIONIL expedition in 2006 at station M70/2a_770_PUC-51

    Lichtschlag, Anna; Boetius, Antje; Felden, Janine; de Beer, Dirk

  8. Pore water geochemistry of Amon mud volcano sediments measured at station M70/2a_765_PUC-52

    Lichtschlag, Anna; Boetius, Antje; Felden, Janine; de Beer, Dirk

  9. Pore water geochemistry of Amon mud volcano sediments measured at station M70/2a_765_PUC-47

    Lichtschlag, Anna; Boetius, Antje; Felden, Janine; de Beer, Dirk

  10. Pore water geochemistry of Amon mud volcano sediments measured at station M70/2a_765_PUC-46

    Lichtschlag, Anna; Boetius, Antje; Felden, Janine; de Beer, Dirk

  11. Pore water geochemistry of Amon mud volcano sediments measured at station M70/2a_765_PUC-14

    Lichtschlag, Anna; Boetius, Antje; Felden, Janine; de Beer, Dirk

  12. Pore water geochemistry of Amon mud volcano sediments measured at station M70/2a_760_PUC-48

    Lichtschlag, Anna; Boetius, Antje; Felden, Janine; de Beer, Dirk

  13. Pore water geochemistry of Amon mud volcano sediments measured at station M70/2a_760_PUC-45

    Lichtschlag, Anna; Boetius, Antje; Felden, Janine; de Beer, Dirk

  14. Pore water geochemistry of Amon mud volcano sediments measured at station M70/2a_760_PUC-41

    Lichtschlag, Anna; Boetius, Antje; Felden, Janine; de Beer, Dirk

  15. Pore water geochemistry of Amon mud volcano sediments measured at station M70/2a_760_PUC-39

    Lichtschlag, Anna; Boetius, Antje; Felden, Janine; de Beer, Dirk

  16. Pore water geochemistry of Amon mud volcano sediments measured at station M70/2a_757_PUC-22

    Lichtschlag, Anna; Boetius, Antje; Felden, Janine; de Beer, Dirk

  17. Pore water geochemistry of Amon mud volcano sediments measured at station M70/2a_757_PUC-10

    Lichtschlag, Anna; Boetius, Antje; Felden, Janine; de Beer, Dirk

  18. Pore water geochemistry of Nile Deep Sea Fan seep sediments measured during the BIONIL expedition in 2006 at station M70/2b_785

    Lichtschlag, Anna; Boetius, Antje; Felden, Janine; de Beer, Dirk

  19. Multibeam data, ParaSound data files and biogeochemical data of METEOR cruise M70/2a and M70/2b

    Dupré, S; Buffet, G; Mascle, Jean; Foucher, Jean Paul; Gauger, Steffen; Boetius, Antje; Marfia, C; Asterx AUV Team; BIONIL Scientific Party
    Two highly active mud volcanoes located in 990-1,265 m water depths were mapped on the northern Egyptian continental slope during the BIONIL expedition of R/V Meteor in October 2006. High-resolution swath bathymetry and backscatter imagery were acquired with an autonomous underwater vehicle (AUV)-mounted multibeam echosounder, operating at a frequency of 200 kHz. Data allowed for the construction of ~1 m pixel bathymetry and backscatter maps. The newly produced maps provide details of the seabed morphology and texture, and insights into the formation of the two mud volcanoes. They also contain key indicators on the distribution of seepage and its tectonic...

  20. Swath sonar multibeam EM120 bathymetry during METEOR cruise M70/2b with links to raw data files

    Boetius, Antje

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