Conveners
O2.2 Seismoacoustic Sources in Theory and Practice
- Rodrigo Chi-Durán (CTBTO Preparatory Commission)
- Paul Granston Richards (Lamont-Doherty Earth Observatory, Columbia University)
A network of seismoacoustic arrays, each of which combine seismic and infrasonic sensors into a single integrated array design, provides a unique capability to detect, locate, and characterize various sources of mechanical waves. Since 1999, Southern Methodist University and Korea Institute of Geoscience and Mineral Resources have cooperatively designed, built, operated, and upgraded six...
Infrasound networks play an important role in detecting atmospheric events such as meteors, bolides and fireballs, significantly contributing to global monitoring and atmospheric studies. On July 28, 2022, at 01:36:08 UTC, a bolide was detected over the Pacific Ocean, near South America, at coordinates 6.0°S and 86.9°W, at an altitude of 37.5 km, velocity of 29.9 km/s and a total energy...
Model validation and uncertainty quantification using empirical data is imperative for gaining and maintaining confidence in any model designed to represent physical reality. In this study, we utilize the open-source Sandia INfrasound Ground-Truth Signals (SINGS) database to validate and quantify uncertainty in atmospheric propagation models. The SINGS database houses infrasound arrivals at...
The detection of seismic and infrasonic signals from nuclear explosions has traditionally been constructed around one-dimensional signal processing methods. However, such traditional approaches are quite different from the artificial interactive analysis and detection modes. In fact, when conducting interactive processing manually, personnel complete the relevant work by relying on the visual...
It was recently reported by Siraj & Loeb (2023) that an ‘interstellar meteor’, potentially part of an alien spaceship, burnt up over the Pacific Ocean in 2014. These authors attempted to use seismic data produced by the bolide to pin-point a re-entry location, from which they claimed to recover pieces of the object from the seafloor. We will show, using both seismic data and IMS infrasound...
Several series of explosive experiments aimed at understanding the signals from underground chemical explosions have included seismic observations made using Distributed Acoustic Sensing (DAS). In all experiments, the spatial density of DAS provided an unprecedented context for exploring topics such as geomaterial response over the course of an explosive experimental series, the influence of...
