# Soviet Union The Geophysical Survey of the Russian Academy of Sciences and Michigan State University are working to recover, preserve, scan, and digitize the historic seismograms of Soviet Peaceful Nuclear Explosions (PNEs). The Soviet Union detonated 122 PNEs from the mid-1960s through the late 1980s. The PNEs were conducted in a wide range of geologic settings and geographic locations, thus representing a unique data set for geophysical studies. ## Stations Well recorded by regional networks. ## Instrumentation SKM short period SKD long period ## Recording Medium ## Data Availability Data are being scanned and digitized for analysis. ## Contact For more information about this collection, please contact: \< *blank* \> ## References Molovichkko, A., Y. Vinogradov, P. Butyrin, and R. Dyagiliv (2021). Preservation and Digitization of Analog Soviet Peaceful Nuclear Explosion Seismograms, IAGA-IASPEI 2021, 21-27 August 2021, virtual, SR100. **Photo Credit:** Bobo Boom, [CC BY 2.0](https://creativecommons.org/licenses/by/2.0), via Wikimedia Commons