UNAM Researchers Map the Interior of Popocatépetl in 3D

Published on January 06, 2026 | Translated from Spanish
Computer-generated 3D visualization showing a cross-section of Popocatépetl volcano, revealing an internal network of cavities and conduits through which magma ascends, over a topographic background.

UNAM Researchers Map the Interior of Popocatépetl in 3D

A group of scientists from the National Autonomous University of Mexico has achieved a milestone by producing the first three-dimensional model that reveals in detail the hidden architecture of Popocatépetl volcano. This volumetric map unveils the cavities and paths that the magma uses to ascend, providing a revolutionary view of its feeding system. 🏔️

The Technique for Scanning the Volcano

The method is based on analyzing the natural seismicity of Popocatépetl. The constant small tremors it generates act as a source of waves. By tracking how these waves propagate and alter when passing through the different materials of the volcanic subsurface, experts can deduce the composition and shape of the internal structures.

Key Process for Generating the Model:
  • A network of specialized sensors captures seismic wave data on the surface.
  • Complex computational algorithms process this information to interpret velocity variations.
  • A detailed volumetric model is built that differentiates solid rock zones from active routes where magma flows.
This methodology is analogous to performing a computed tomography scan, but on a planetary scale, using the Earth itself as the signal source.

Impact on Risk Monitoring

This technological advance becomes a fundamental tool for optimizing how the activity of the colossus is monitored. Understanding the volcano's internal plumbing allows for more accurate interpretation of precursor signals of a possible eruption.

Direct Benefits for Safety:
  • Anticipate with greater certainty how an eruptive phase might evolve.
  • Optimize civil protection protocols for surrounding communities.
  • Issue more precise and timely alerts, based on a deep understanding of internal dynamics.

A New Blueprint to Understand the Giant

Now, volcanologists can not only listen to Popocatépetl's seismic activity, but they also have a detailed blueprint of its internal system. This knowledge goes beyond just perceiving that the volcano is smoking; it allows understanding the mechanisms that govern its behavior, marking a before and after in volcanology applied to risk management in Mexico. 🔬