The influence of anisotropic wind velocity and temperature inhomogeneities on the attenuation of infrasound field intensity with increasing distance from a point source and its altitude distribution is studied. The field is calculated as a function of receiver height and horizontal distance from the source using method of the pseudo-differential parabolic equation for the atmosphere with model...
Pisces (https://lanl-seismoacoustics.github.io/pisces/) is a python-based data management library designed to facilitate interaction with seismological databases utilizing CSS3.0-like schemas. Pisces leverages existing free and open source technologies maintained by the wider seismological community to incorporate information from these databases into python workflows. Recent additions to...
Research into monitoring underground explosions under the Comprehensive Nuclear-Test-Ban Treaty (CTBT) focuses on fully utilizing International Monitoring System (IMS) data to detect events of interest to the CTBT regime. For example, the Punggye-ri test site in the DPRK has been experiencing aftershock activity caused by large underground explosions for the past eight years. The use of...
This paper explores how gamification can enhance youth engagement in CTBT advocacy and verification. By bridging barriers, gamification fosters participation in test ban monitoring at the intersection of technology, policy, and advocacy. CTBTO’s mission depends on global awareness, technical expertise, and diplomatic engagement—yet youth involvement remains limited due to technical complexity...
Radionuclides from underground nuclear explosions can migrate through soil and rock, eventually reaching the surface and entering the atmosphere. Once airborne, they can be carried by winds to detectors located downwind. The detectability of these radionuclides is affected by the geographical and geological features of the test site, particularly in remote areas with complex terrain, which can...
Global seismic monitoring allows for robust real-time analysis to provide useful information about seismic events to assist in earthquake emergency response and for international monitoring efforts of underground nuclear explosions (UNE) and nuisance events. Seismic explosion data is limited but is useful ground truth information for characterization studies and has been shown to be useful...
Early stage identification of seismic station equipment problems can save unnecessary maintenance on healthy equipment, while prompting necessary maintenance on equipment at risk of failure. Performing maintenance before equipment fails can ensure data quality and avoid outages. In a previous study, we proposed an unsupervised deep autoencoder model to detect ambient data anomalies, indicating...
Understanding the structure and dynamics of the Earth’s inner core is the key to understanding the history and evolution of the Earth’s magnetic field. However, knowledge about the inner core remains limited. Fine-scale (1–10 km) structures within the inner core scatter high-frequency seismic waves (ICS), providing critical insights, although detecting these signals is challenging. Using the...
