Daily Arxiv

This is a page that curates AI-related papers published worldwide.
All content here is summarized using Google Gemini and operated on a non-profit basis.
Copyright for each paper belongs to the authors and their institutions; please make sure to credit the source when sharing.

Revealing Hidden Precursors to Earthquakes via a Stress-Sensitive Transformation of Seismic Noise

Created by
  • Haebom

Author

Nader Shakibay Senobari

Outline

This paper presents a novel method for detecting preseismic signals by employing a frequency-domain transform technique to address the challenges of earthquake prediction. This method tracks energy differences between adjacent frequency bands to isolate subtle spectral changes associated with shear and vertical stress changes. Application to laboratory acoustic emission data and seismograms from seven major earthquakes (magnitudes 5.9–9.0) consistently reveals precursory signals, arc-shaped trajectories, and extreme accelerations that appear hours to days before rupture. These features are robust across diverse geological environments, including induced earthquakes, volcanic collapses, continental strike-slip faults, and subduction superfault earthquakes. In conclusion, this study demonstrates the existence of precursory signals hidden in ambient seismic waves, suggesting their potential for real-time fault monitoring and short-term earthquake prediction.

Takeaways, Limitations

Takeaways:
A new method for detecting earthquake precursor signals through subtle spectral changes in surrounding seismic waves is presented.
Consistently detecting precursory signals from earthquakes in diverse geological environments.
Presenting the possibility of real-time fault monitoring and short-term earthquake prediction.
Limitations:
This analysis is based on a limited amount of seismic data. Further verification is needed.
Further research is needed into the precise physical mechanisms of the precursor signal.
Further technical development and validation are needed to build a practical earthquake prediction system.
👍