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Kopf, Achim [Author]; Bannert, Bernhard [Author]; Brückmann, Warner [Author]; Dorschel, Boris [Author]; Foubert, Anneleen T. G. [Author]; Grevemeyer, Ingo [Author]; Gutscher, Marc-André [Author]; Hebbeln, Dierk [Author]; Heesemann, Bernd [Author]; Hensen, Christian [Author]; Kaul, Norbert Emanuel [Author]; Lutz, Marco [Author]; Magalhaes, Victor Hugo da Silva [Author]; Marquardt, Matthias Jonathan [Author]; Marti, Alexis V. [Author]; Nass, Kristin Sabrina [Author]; Neubert, Nadja [Author]; Niemann, Helge [Author]; Nuzzo, Marianne [Author]; Poort, Jeffrey Pepijn Dylan [Author]; Rosiak, Uwe Dieter [Author]; Sahling, Heiko [Author]; Schneider von Deimling, Jens [Author]; Somoza Losada, Luis [Author]; [...]

Report and preliminary results of SONNE cruise SO175, Miami - Bremerhaven, 12.11 - 30.12.2003 : (GAP, Gibraltar Arc Processes)

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  • Media type: Report; E-Book
  • Title: Report and preliminary results of SONNE cruise SO175, Miami - Bremerhaven, 12.11 - 30.12.2003 : (GAP, Gibraltar Arc Processes)
  • Contributor: Kopf, Achim [Author]; Bannert, Bernhard [Author]; Brückmann, Warner [Author]; Dorschel, Boris [Author]; Foubert, Anneleen T. G. [Author]; Grevemeyer, Ingo [Author]; Gutscher, Marc-André [Author]; Hebbeln, Dierk [Author]; Heesemann, Bernd [Author]; Hensen, Christian [Author]; Kaul, Norbert Emanuel [Author]; Lutz, Marco [Author]; Magalhaes, Victor Hugo da Silva [Author]; Marquardt, Matthias Jonathan [Author]; Marti, Alexis V. [Author]; Nass, Kristin Sabrina [Author]; Neubert, Nadja [Author]; Niemann, Helge [Author]; Nuzzo, Marianne [Author]; Poort, Jeffrey Pepijn Dylan [Author]; Rosiak, Uwe Dieter [Author]; Sahling, Heiko [Author]; Schneider von Deimling, Jens [Author]; Somoza Losada, Luis [Author]; [...]
  • Published: OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel), 2004
  • Extent: text
  • Language: English
  • Origination:
  • Footnote: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
  • Description: Expedition SO175 using FS Sonne aimed for a multidisciplinerary geoscientific approach with an international group of researchers. Methods covered the entire span from geophysical data acquisition (seafloor mapping, echography, seismic reflection), sediment coring at sites of active fluid venting, in situ heat flow measurements across the entire length of the Gibraltar thrust wedge, the deformation front, landslide bodies, and mud volcanoes, and finally the deployment of a long-term pore pressure probe. Video-supported operations helped to identify fluid vent sites, regions with tectonic activity, and other attractive high priority targets. Qualitative and quantitative examinations took place on board and are continued on land with respect to pore pressure variation, geomicrobiology, sediment- and fluid mobilization, geochemical processes, faunal assemblages (e.g. cold water corals), and gas hydrates (flammable methane-ice-crystals). Main focus of the expedition has been a better understanding of interaction between dynamic processes in a seismically active region region with slow plate convergence. In the context of earthquake nucleation and subduction zone processes, the SO175 research programme had a variety of goals, such as: • To test the frictional behaviour of the abyssal plain sediments. • To explore the temperature field of the 1755 thrust earthquake event via heat flow measurements. • To assess the role of fluid venting and gas hydrate processes control slope stability and mud volcanic activity along the Iberian continental margin. • To measure isotope geochemistry of pore waters and carbonates of deep fluids. • To quantify microbial activity in Gibraltar wedge sediments. • To test whether microseismicity in the area corresponds to in situ pore pressure changes. • To find out if enhanced heat flow max be indicative of active subduction. Initial tentative results during the cruise suggest that there is a component of active thrusting at the base of the wedge, as attested by heat flow data. Based on ...
  • Access State: Open Access