Acoustics Summer 2022 Featured Body   960x500
Researchers discuss acoustics measurements with the powerful 3D laser vibrometer that measures vibrations for high-resolution, nondestructive materials’ tests.


  • Applied Seismology: evaluation of seismic wave generation and propagation; analysis of critically stressed faults; earthquake triggering; explosion monitoring.
  • Elasticity, Vibrations, and Acoustics (EVA) Laboratory specializes in:
    • using acoustic and elastic waves for material integrity characterization and nondestructive evaluation, including high-pressure fluid environments.
    • full 3D waveform measurements using laser vibrometry,
    • imaging and developing advanced ultrasonic techniques using time reversal and nonlinear elasticity.
  • Geologic framework model development.
  • Geomechanical Modeling: Combined finite- and discrete-element analysis of rock deformation; high strain-rate shock propagation; multi-scale analysis of the crustal state of stress.
  • Data Analytics: application of machine learning techniques to improve the extraction of knowledge from data.
  • Seismic and acoustic imaging:  microseismicity analysis; inversion theory; seismic and acoustic tomography.


  • Earthquake triggering and earthquake processes.
  • Ground-based nuclear detonation detection.
  • Advanced data analytics to improve subsurface decision-making for national security and applied energy challenges.
  • Seismic and medical imaging.
  • Nondestructive evaluation using non-linear acoustic techniques.
  • Combined finite- and discrete-element numerical modeling of solid-fluid interactions.


  • Basic research associated with the non-linear elastic behavior of Earth and other materials.
  • Carbon sequestration risk assessment:
    • National Risk Assessment Partnership (NRAP): prediction of carbon sequestration-induced seismicity.
    • State of stress: modeling to map from local to regional scale and monitor and assess risk.
  • Determining the Earth’s state of stress and the critical stress state preceding failure of faults.
  • Determining the effect of fluids on permeability in the crust.
  • Elasticity, Vibrations, and Acoustics (EVA) Laboratory projects.
  • Imaging non-linear elastic behavior in reservoirs.
  • Medical imaging.
  • Modeling to simulate and model propellant- and explosion-source fracture.
  • Nonlinear Elasticity and Material Team.
  • Nuclear nonproliferation:
    • Modeling to understand noble-gas seepage in fractured rock.
    • Multi-Phenomenology Explosion Monitoring (MultiPEM): nuclear treaty/explosion monitoring.
    • Subcritical experiments to ensure special nuclear material containment.
    • Multi-scale Seismo-acoustic nuclear detonation detection and wave propagation.
    • Regional Seismic Travel Time (RSTT) modeling and uncertainty estimation.
    • Seismic monitoring (passive and active).
    • Source Physics Experiment (SPE) to improve low-yield nuclear explosions’ event identification.