Dynamics of the Ocean Floor

The Research Division Dynamics of the Ocean Floor has two Research Units: Magmatic and Hydrothermal Systems and Marine Geodynamics.

Contact

Head of the Research Division:

Prof. Dr. Colin Devey
GEOMAR Helmholtz Centre for Ocean Research Kiel
East shore campus
Wischhofstraße 1-3 
D-24148 Kiel
Germany
Phone: +49-431-600-2357
Fax: +49-431-600-2924
e-mail: cdevey(at)geomar.de

Personal Assistent/Office Management:
Jasmin Mögeltönder
Phone: +49-431-600-2271
e-mail: jmoegeltoender(at)geomar.de

Anne Völsch
Phone: +49-431-2271
e-mail: avoelsch(at)geomar.de

Publications

Overview

The research focus is on the geological-geophysical survey of the ocean floor and the margins of the ocean basins. The core topics include processes of formation, development, alteration and subduction of the oceanic lithosphere and the associated effects on the environment, for example on the climate and the emergence of natural hazards.

These research topics are addressed in three geotectonic areas:

  • Divergent plate margins: Formation of the ocean floor and the ocean basins
  • Convergent plate margins: the subduction engine
  • Tectonic and magmatic processes in the intraplate zone: Conversion of oceanic plates

Significant research emphasis is placed on:

  • Marine natural hazards: earthquakes, volcanoes, slope stability, submarine landslides, and tsunamis
  • Seafloor resources: Gas hydrates and polymetallic massive sulphides
  • Introduction of volatiles into the atmosphere and hydrosphere

RD4 News

Schematic evolution of retrogressive slope failure due to overpressured gas below the gas haydrate stability zone (GHSZ): a submarine slope with gas hydrate-bearing sediments  and overpressured gas (bright area) at the bottom of the GHSZ induces pipe generation into the GHSZ,  the conduit encounters a permeable layer; gas enters and leads to overpressure transfer from the bottom of the GHSZ to the shallow subsurface, and finally overpessured gas causes shear banding in the weak layer and generates retrogressive slope failure.
20.02.2018

Stable gas hydrates can trigger landslides

"Cement of continental slopes" effect slope stability differently than previously thought

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Bathymetric map of the the Cap Blanc landslide. Map: Morelia Urlaub/GEOMAR
13.02.2018

Why the seafloor starts moving

Kiel marine scientists find possible cause of landslides off Northwest Africa

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