Plate tectonics and marine hazards

Dynamic processes beneath the seafloor can cause natural hazards (such as earthquakes, landslides, tsunamis, and volcanic eruptions) that affect people living in coastal areas. A better understanding of the processes involved in the movement of tectonic plates is required in order to assess these hazards and to identify the early warning signals that precede such natural disasters.

News for topic: Plate tectonics annd marine harzards

Hot vent on the sea floor. Photo: ROV team/GEOMAR

ROV KIEL 6000 discovers ‘clear smokers’ off Iceland

IceAGE3 expedition delivers fascinating images of the seafloor off Iceland

[Translate to English:] Vor 35 Millionen Jahren schlug an der nordamerikanischen Ostküste ein Asteroid ein. Auswurf-Material aus der Einschlagstelle verteilte sich über eine Fläche von mindestens 7 Millionen Quadratkilomtern (Tektite field). In Bohrproben vom Meeresboden, die 400 Kilometer von der Einschlagstelle entfernt genommen worden sind (ODP 1073) haben Forscherinnen und Forscher jetzt eindeutige Spuren des Einschlags gefunden und erstmals mit der Uran-Thorium-Helium-Technik datiert. Image reproduced from the GEBCO world map 2014,

Space exploration on the sea floor

Traces of an extraterrestrial impact event detected in marine sediments

[Translate to English:] Entlang der Nordanatolischen Verwerfung schieben sich Anatolien und die Eurasische Erdplatte aneinander vorbei. Image reproduced from the GEBCO world map 2014,

Istanbul: Seafloor study proves earthquake risk for the first time

GeoSEA sensors document tectonic strain build-up below the Sea of Marmara

[Translate to English:] Das Forschungsschiff SONNE vor Ritter Island während der Expedition SO252 im Herbst 2016. Foto: Christian Berndt/GEOMAR

Precursors of a Catastrophic Collapse

Ritter Island gives new insights into the dynamics of volcanic landslides

The participants of the expedition SO267 and the research vessel SONNE shortly before leaving the port of Suva (Fiji). Photo: Philipp Brandl + Nico Augustin/GEOMAR

Christmas in the Western Pacific

Kiel Marine Scientists investigate the birthplace of a continent with RV SONNE

In spring 2016, a team from GEOMAR and Kiel University on board the research vessel POSEIDON installed the GeoSEA transponders on the eastern flank of Mount Etna. Photo: Felix Gross (CC BY 4.0)

GeoSEA array records sliding of Mount Etna’s southeastern flank

Volcano flank moves under water – Tsunami is a possible consequence

Area of investigation at the Cayman Trough in the Caribbean. Graphics. Ingo Grevemeyer/GEOMAR

Cold Production of New Seafloor

First seismic evidence for mantle exhumation at an ultraslow-spreading centre

Gas hydrates are nicknamed "burning ice" because of the trapped methane. Photo: Science Party SO174

Gas hydrate research: Advanced knowledge and new technologies

After ten years, the SUGAR project concludes with a conference in Potsdam

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.

Stable gas hydrates can trigger landslides

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

In summer 2017 30 ocean bottom seismometers were deployed from the French research vessel POURQUOI PAS? into the Ligurian Sea. During the current journey, they are recovered to evaluate the recorded data. Picture: Catherine Prequegnat/CNRS

Alpine research in the Deep Sea – how does that fit together?

GEOMAR investigates the ‘Ligurian Knot’ as part of the AlpArray project