Plate tectonics and marine hazards

Seafloor topography of a subduction zone off the coast of Costa Rica. Source: GEOMAR.

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

Area of investigation at the Cayman Trough in the Caribbean. Graphics. Ingo Grevemeyer/GEOMAR
24.05.2018

Cold Production of New Seafloor

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

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Gas hydrates are nicknamed "burning ice" because of the trapped methane. Photo: Science Party SO174
23.03.2018

Gas hydrate research: Advanced knowledge and new technologies

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

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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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