Crucial discovery by scientists could potentially save lives in natural disasters: 'Highly dangerous'

Scientists warn that rising magma beneath recently active volcanoes can destabilize their slopes, potentially leading to catastrophic collapses. While the precise triggers for such events remain uncertain, researchers are now developing methods to anticipate them.

Christelle Wauthier, an associate professor in the Department of Geosciences at Penn State and director of Computational and Data Sciences, has created models designed to forecast volcano stability. These models were published in the Journal of Geophysical Research: Solid Earth and provide a framework for understanding how volcanic slopes respond to internal pressures.

According to reports from ABC Science, lava itself is often not the deadliest outcome of eruptions. More lethal threats include hot gases and tsunamis, with the latter frequently triggered when large masses of rock slide into nearby bodies of water.

Wauthier and her team analyzed historical volcanic slope failures to develop predictive tools that assess how slopes might react to magma movement under different scenarios. Their findings indicate that slopes with shallow underlying faults are most prone to collapse.

The models offer practical applications for communities near volcanoes, allowing authorities to deploy monitoring systems such as seismometers and GPS to track vulnerable areas in real time. "If you know which part of the volcano is at higher risk, you can monitor it closely before a collapse occurs," Wauthier explained.

While a collapse itself can cause significant local damage, the associated tsunamis present an even greater danger. Historical data highlight the 1883 eruption of Anak Krakatau in Indonesia, where a slope failure triggered a tsunami that claimed over 36,000 lives, accounting for 90% of fatalities from the event.

Researchers note that climate change may also influence volcanic activity, potentially increasing the frequency of eruptions, collapses, and related tsunamis in the coming decades.

Wauthier's team continues to refine their models through further testing and calculations, aiming to enhance predictive accuracy. The ultimate goal is to implement this technology to protect communities and reduce risks from volcanic hazards worldwide.

Analysis: Understanding Volcanic Slope Stability

From my perspective as the author, the latest research by Christelle Wauthier represents a significant step forward in anticipating volcanic hazards. The development of predictive models for slope stability addresses a critical gap in volcanic risk assessment, moving beyond traditional focus on lava flows alone.

The models highlight the specific vulnerabilities of slopes with shallow underlying faults, offering a targeted approach for monitoring. By integrating seismometers and GPS in high-risk zones, authorities can gain actionable intelligence to prevent or mitigate catastrophic collapses and secondary hazards like tsunamis.

Historical examples, such as the 1883 Anak Krakatau disaster, underscore the deadly potential of slope failures. Wauthier’s work provides a framework to apply lessons from the past in real time, improving preparedness and potentially saving thousands of lives.

Ongoing refinement of these models, combined with consideration of climate-driven changes in volcanic activity, makes this research crucial. For communities near active volcanoes, the implementation of such predictive tools could transform how we manage volcanic threats, shifting from reactive responses to proactive prevention.

Sources:

• Scientists make crucial discovery that could save lives in natural disaster: 'Can be very, very dangerous'