Emergent networks

Predicting strain localization and fracture network development

About the project

How can we estimate the timing of the next large earthquake? The ability to estimate when the next large earthquake will occur at a particular location (i.e., Los Angeles) would provide immediate societal and economic benefits.

Plots showing the fracture network characteristics for marble (upper) and granite (lower).
Experimental data used to identify the fracture network characteristics that best predict the proximity of catastrophic failure in recently accepted GRL paper.

Observations of natural, crustal earthquakes, and laboratory earthquakes indicate that precursory processes tend to accelerate in activity leading up to the dynamic, macroscopic, system-scale failure of a system. This project aims to quantitatively describe and characterize these precursory processes that signal the onset of earthquake preparation. Following the characterization of these processes in laboratory experiments, the project aims to predict the timing of laboratory and crustal earthquakes using machine learning.

Four figures showing fracture network characteristics identified via machine learning (fracture orientation, aperture and anisotropy, and distance between fractures).
Fracture network characteristics identified via machine learning. These characteristics constrain which fundamental criteria of fracture mechanics (strain energy density) may indicate the timing of approaching earthquakes.

Following the development of successful machine learning models that predict the timing of earthquakes, the project will examine which characteristics of fracture networks and strain fields provide the greatest predictive power of the timing of earthquakes. The project will then use numerical models to examine how the processes identified at the laboratory scale with fine temporal and spatial resolution may up-scale to the processes operating at the km-scale within natural tectonic systems, such as the San Andreas fault in California.

This project started in September 2020, and has thus far yielded four submitted papers.

Financing

The Research Council of Norway

Cooperation

  • The Njord Center, University of Oslo, Norway
  • University of Southern California, USA
  • L'Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Brest, France
  • Center for Computing in Science Education, University of Oslo, Norway
  • University of Copenhagen, Denmark

Seals of project participants.

 

Publications

  • McBeck, J., Mair, K., & Renard, F. Decrypting healed fault zones: How gouge production reduces the influence of fault roughness. Geophysical Journal International, in press.

  • McBeck, J., Ben-Zion, Y., & Renard, F. How the force and fracture architectures develop within and around healed fault zones during biaxial loading toward macroscopic failure. Journal of Structural Geology, in review.

  • McBeck, J., Aiken, J., Mathiesen, J., Ben-Zion, Y., & Renard, F. (2020) Deformation precursors to catastrophic failure in rocks. Geophysical Research Letters, e2020GL090255

  • McBeck, J., Zhu, W., & Renard, F. The competition between fracture nucleation, propagation and coalescence in the crystalline continental upper crust. Solid Earth, in review.

View all works in Cristin

  • McBeck, Jessica Ann (2021). Predicting the timing of catastrophic failure.
  • McBeck, Jessica Ann (2021). Using fracture characteristics and strain fields to predict the timing of failure.
  • McBeck, Jessica Ann (2021). Predicting fracture network characteristics using machine learning.
  • McBeck, Jessica Ann (2021). Lazy localization? Deciphering the link between work optimization and spatial localization throughout fault network development.
  • McBeck, Jessica Ann (2021). Precursory off-fault deformation: Insights from discrete element method models.
  • McBeck, Jessica Ann (2021). Precursory off-fault deformation to slip along healed faults in restraining and releasing step overs.
  • Madathiparambil, Aldritt Scaria; Mürer, Fredrik Kristoffer; Tekseth, Kim Robert Bjørk; Agofack, Nicolaine; Cerasi, Pierre & Cordonnier, Benoit [Show all 10 contributors for this article] (2021). In situ computed tomography studies of strain evolution in Draupne shales.
  • McBeck, Jessica Ann (2020). Predicting the proximity of failure using fracture networks.

View all works in Cristin

Published Apr. 28, 2021 2:45 PM - Last modified Jan. 17, 2023 12:19 PM

Contact

Jessica Ann McBeck, researcher

 

Participants

Detailed list of participants