EGU Blogs

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GeoLog

GeoPolicy: Response to the new European climate resilience framework

GeoPolicy: Response to the new European climate resilience framework

Climate change is having a profound impact on the planet. According to several reports, 2023 was the warmest year on record, with the global average temperature over the 12-month period from February 2023 to January 2024 exceeding the 1.5 °C threshold above pre-industrial levels. Climate change acts as a risk multiplier, as its impacts transcend …[Read More]

HS
Hydrological Sciences

Doing flood frequency hydrology in a non-stationary climate

Doing flood frequency hydrology in a non-stationary climate

A robust estimation of probabilities of extreme floods is the Holy Grail in flood hydrology in view of limited available observations, variability of climate, and complexity of flood generation processes in catchments. Flood frequency hydrology, spearheaded in the past decades by Ralf Merz and Günter Blöschl, offers a powerful toolbox to enhance the reliability of …[Read More]

CL
Climate: Past, Present & Future

When a major climate event goes almost unnoticed: the elusive 8.2 ka signal in southern France stalagmites

When a major climate event goes almost unnoticed: the elusive 8.2 ka signal in southern France stalagmites

  Around 8,200 years ago, the climate of the Northern Hemisphere experienced an abrupt disturbance. In Greenland ice cores, the signal is unmistakable: a rapid drop in temperatures, followed by a gradual return to previous conditions. This episode, which lasted about 150 years, is known as the 8.2 ka event (“ka” meaning thousand years before …[Read More]

TS
Tectonics and Structural Geology

Exploring Earth’s interior with analogue models: The case of slow earthquakes

Analogue experimental setup of spherical hydrogel suspension.

Have you ever heard of “analogue modelling”? In solid Earth science, directly observing the Earth’s interior is challenging, and the analogue modelling approach often overcomes this limitation by using alternative systems analogous to natural phenomena. By identifying fundamental mechanisms in these tractable systems, we can apply physical scaling laws to understand processes deep within the …[Read More]

GM
Geomorphology

Unveiling Volcanic Slopes: Exploring Landslide Hazards in Santorini Island, Greece

Unveiling Volcanic Slopes: Exploring Landslide Hazards in Santorini Island, Greece

by Stratis (Efstratios) Karantanellis, Professor, Geohazards and Remote Sensing Lab, Department of Geological Sciences at California State University, Fullerton. Email: ekarantanellis@fullerton.edu, website: https://sites.google.com/view/stratiskarantanellis Santorini is one of those places that doesn’t quite feel real at first glance. White houses stacked on cliffs, blue domes, the Aegean stretching out in every direction. But once you step …[Read More]

SM
Seismology

Art, science, and seismic memory

Art, science, and seismic memory

The contribution from Sergio León-Ríos, Associate Researcher at the Advanced Mining Technology Center (AMTC) at the University of Chile, where he does seismology research. Introduction Earthquakes and tsunamis are not only purely scientific geophysical phenomena. They are also deeply embedded in social memory, cultural narratives, and everyday life – especially in countries like Chile, where …[Read More]

G
Geodesy

Geodesists on Tour: Circumnavigating Greenland by Helicopter

Geodesists on Tour: Circumnavigating Greenland by Helicopter

  Greenland, the world’s largest island, has one of the most challenging environments for geodetic measurements. Maintaining GNSS (Global Navigation Satellite Systems) stations here isn’t just about precision – it’s about ensuring data continuity in an area that’s constantly moving. This is the behind-the-scenes story of a 15,000 km journey around Greenland: five weeks of …[Read More]

CR
Cryospheric Sciences

Classroom on Ice: The Patagonian Icefield Research Program

a group of students and staff in hi-vis rain gear pick theri way along a rocky slope towards a glacier

An isolated fjord at the edge of the Southern Patagonia Icefield. A small cluster of tents pitched beside Bernal Glacier. Fourteen days without roads, cell reception, or routine – only creaking ice fronts, restless wind, the constant murmur of meltwater, unrelenting rain, and a team of fellow adventurers as companions. The Patagonia Icefield Research Program …[Read More]