Sandia researchers are using remote data to determine the structure of underground tunnels. Specifically, their research focuses on understanding acoustic resonance in these structures, specifically how changes in tunnel configurations affect the acoustic signals observed from a distance. The potential benefits of this work were presented in May 2024 at the Acoustical Society of America Meeting in Ottawa.
Looking ahead, Sandia researchers have planned follow-on projects that will utilize numerical methods to analyze acoustic wave propagation and invert for underground tunnel structures. Additionally, the team will conduct a detailed analysis of the spectral content of these signals to fully exploit the valuable information they contain. This work not only enhances understanding but also improves safety and monitoring capabilities in critical situations.
COOL FACT > The insights gained could significantly aid monitoring agencies that analyze acoustic signals from explosive events. With this research, these agencies can more accurately determine whether a specific signal originates from an explosion in an underground tunnel or cavity.
Sandia experts linked to work
- Nathan John Downey
July 14, 2025