Exploring the geometrical makeup of rocks in earthquake-prone areas may hold the key to understanding their strength and occurrence.
Geologists at Brown University have shaken up the traditional view by proposing that fault zones and rock formations’ alignment could be a defining factor in seismic activity.
This fresh perspective challenges the common belief that earthquakes are solely triggered by fault line friction.
Geophysicist Victor Tsai, leading the study, commented on how this new insight reshapes our understanding of earthquake dynamics.
This revelation is vital for pinpointing potential earthquake hotspots and enhancing prediction accuracy.
Traditionally, geologists attributed earthquakes to pressure buildup along faults, leading to sudden slips known as “stick-slip” behavior.
However, the recent study underscores that the complexity of rock structures plays a crucial role in predicting earthquakes alongside friction.
By analyzing fault zones in California using various geological databases, including the significant San Andreas Fault, researchers concluded that intricate fault structures correlate with stronger ground movements.
The study suggests visualizing fault defects like serrated edges; when smoother, rocks slide easily, but sharp edges can create pressure points, triggering earthquakes.
This may explain the varying impact of earthquakes with similar magnitudes.
Ultimately, researchers aspire to refine earthquake prediction techniques for improved preparedness.
The full findings were published in the Journal of Medical Science and Technology under Nature.