Researchers Detect 510 Deep East Antarctica Quakes at 100-150 km, Challenging Plate Theory
Updated
Updated · ScienceAlert · Jun 18
Researchers Detect 510 Deep East Antarctica Quakes at 100-150 km, Challenging Plate Theory
2 articles · Updated · ScienceAlert · Jun 18
Summary
Data from 49 seismic stations and a deep-learning detection system revealed 510 intermediate-depth earthquakes beneath East Antarctica, clustered under David Glacier at depths of 100-150 km.
The quakes were small—magnitude 1.6 to 3.5—but unusual because they occurred far from tectonic plate boundaries, where standard models predict little deformation and few deep brittle failures.
Researchers said the likely driver is a steep strength contrast between cold, thick East Antarctic lithosphere and hotter, thinner West Antarctic lithosphere, plus stress from upwelling mantle below and glacier loading above.
The study suggests Antarctica is more seismically active than once thought and that improved AI-based detection could uncover similar hidden intraplate deep earthquakes elsewhere.
If Antarctica has deep earthquakes, what other 'stable' continents might be hiding similar undiscovered seismic threats?
As Antarctica's massive glaciers melt, could this awaken a hidden network of deep earthquakes across the continent?
Could AI be mistaking deep ice movements for rock fractures, creating phantom earthquakes beneath Antarctica's glaciers?
Hidden Deep Earthquakes in East Antarctica: Machine Learning Reveals Unexpected Seismic Activity and Global Implications
Overview
A major breakthrough has revealed many previously hidden deep earthquakes beneath East Antarctica, thanks to advanced machine-learning tools that can detect subtle seismic signals. These discoveries show that deep earthquakes inside continents may be much more common than scientists thought. As machine-learning technology improves, even more hidden events are likely to be found, which could force a rethinking of how earthquakes fit into plate tectonics. The fact that these intermediate-depth earthquakes occur in places without known fault lines challenges existing models and opens new paths for understanding Earth's dynamic processes in remote regions.