Could Seismic Signals from Earthquakes Mask the Signals of an Underground Explosion?

Locations of target sources, background seismicity, and NVAR seismic array sensor locations used in study.

24 April 2025—Could the seismic signal of an underground nuclear test explosion be “hidden” by the signal generated by a natural earthquake? It’s possible, according to a new review article published in the Bulletin of the Seismological Society of America that contradicts the conventional wisdom about explosion “masking.” The new … Continue Reading »

Clustering of Upper Plate and Subduction Earthquakes at New Zealand’s Southern Hikurangi Margin

photo of Wellington Fault Scarplet sign in New Zealand

1 April 2025—More than half of the earthquakes sampled at the subduction interface at the southern Hikurangi margin in Aotearoa-New Zealand cluster in time with earthquakes on three upper plate faults, according to a new analysis. The study published in the Bulletin of the Seismological Society of America will help … Continue Reading »

Nuclear Monitoring System Suggests Landslide Cut off Internet in West Africa

27 March 2025—Hydroacoustic signals captured by the world’s international nuclear monitoring system suggest an underwater landslide may have broken communications cables and disrupted internet traffic in west African countries for several weeks in March 2024. Researchers used data collected by hydrophones installed by the International Monitoring System of the Comprehensive … Continue Reading »

Seismic Study of Singapore Could Guide Urban Construction and Renewable Energy Development

Illustration for the geological model of Singapore and mechanism of the Sembawang hot spring

5 March 2025 — A new seismic study of Singapore could guide urban growth and renewable energy development in the coastal city nation, where 5.6 million residents live within an area of 734 square kilometers. The study, published in Seismological Research Letters, identifies areas with increased risk of ground shaking and … Continue Reading »