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Natural Hazards

recognizing & communicating

Earthquakes, mass movements of slopes, volcanic eruptions are localised geological events but they can produce far-reaching tsunami, and thus pose a major threat to people and social infrastructure not only in their immediate vicinity but also over long distances.

These geohazards are not limited to the continents, but occur on and under large areas of the seabed. Landslides can be found, for example, at all tilded seabeds from shallow waters to the deep sea, underwater volcanoes endanger small seas (e.g. the Aegean) and oceans (e.g. the Pacific), and the most devastating earthquakes are triggered in subduction zones (e.g. the Pacific Ring of Fire).

Scientific knowledge of the extent of these geohazards, the spatial and temporal dimensions are essential for assessing and mitigating the risk to communities, critical infrastructure and the environment.

Marine geoscientists at MARUM work with social scientists and engineers to reduce impacts along the coasts and support the building of resilient societies in direct collaboration with those affected. Together, MARUM researchers are involved in various projects around Europe and other regions of the world.

A key focus of our research is not only on individual geological events, but also on the consequences of chain events that are difficult to predict - so-called cascading geohazard effects. For example, if an earthquake triggers landslides, both processes can significantly amplify the subsequent tsunami.

M154-2 offshore Montserrat. Photo: MARUM - Centre for Marine Environmental Sciences, University of Bremen; V. Diekamp

The Volcanic Island of Montserrat shaped by different eruption phases between 1995 and 2010. The topography of the Soufrière Hills volcano before 1995 (dashed line) and after 2010 (black line) the most recent series of eruptions. White arrows mark the material transport pathways of the collapsed volcanic cone materials. Slid masses were drilled offshore during METEOR Expedition M154-2. Photo: MARUM – Centre for Marine Environmental Sciences, University of Bremen; K. Huhn-Frehers

Selection of current research projects

MultiMAREX

Earthquakes and volcanic eruptions and the associated tsunamis around Santorini...

 

(DAM mission)

 

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POSEIDON

POSEIDON project brings together experts from European countries, universities, industry,...

 

(EU MSCA Doctoral Network)

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Cascading Geohazards

The increasing exposure and vulnerability to marine cascading geohazards...

 

(various collabation projects)

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Current news

Showing 13-16 of 29 items.
The scientific drilling vessel CHIKYU. Photo: JAMSTEC

Dec 4, 2024

On the trail of the 2011 mega earthquake

What was the cause of the great Tōhoku earthquake of 2011, and how can we better understand geological processes in order to protect coastal infrastructure ...

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