19–23 Jun 2023
Hofburg Palace & Online
Europe/Vienna timezone

Analysis of Anomalous Seismic Events in India

21 Jun 2023, 09:00


Board: 5
E-poster T2.1 Characterization of Treaty-Relevant Events Lightning talks: P2.1, P2.3, P4.4


Mr Thomas VanDeMark (Air Force Technical Application Center (AFTAC))


The US National Data Centre (NDC) observed five relatively large seismic events in the Chhattisgarh Province of India from September 2018 through October 2022. These events are of interest as they exhibit some explosive characteristics, and their respective yields are approximately equivalent to a 1 kiloton underground nuclear explosion. The events occurred near a known coal mine that uses retreat style mining, which has been known to cause catastrophic collapses at other mining areas. The US NDC conducted Interferometric Synthetic Aperture Radar (InSAR) analysis in concert with waveform correlation and cluster analysis to show that these events can likely be attributed to randomly occurring collapses at the mine. Further, the radius of the InSAR observed surface deformation was compared to the theoretical cavity/chimney radius of an equivalent size underground nuclear test. This comparison excludes the possibility of the events being nuclear related.

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The US NDC will be discussing a set of interesting set of anomalous seismic events observed in India from 2018 to 2022.

E-mail [email protected]
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Primary author

Mr Thomas VanDeMark (Air Force Technical Application Center (AFTAC))


Mr Gregory Johnson (Air Force Technical Application Center (AFTAC)) Mr Jorge Roman-Nieves (Air Force Technical Application Center (AFTAC)) Dr Mark Woods (Air Force Technical Application Center (AFTAC)) Dr Rongmao Zhou (Air Force Technical Application Center (AFTAC))

Presentation materials