CTBT: Science and Technology Conference 2023 - SnT2023

Session

O2.5 Historical Data from Nuclear Test Monitoring

O2.5

20 Jun 2023, 14:55

Forum

Conveners

O2.5 Historical Data from Nuclear Test Monitoring: part 1

• Martin B. Kalinowski (CTBTO Preparatory Commission)
• Anna Berezina (Institute of Seismology, National Academy of Sciences of the Kyrgyz Republic)

O2.5 Historical Data from Nuclear Test Monitoring: part 2

• Anna Berezina (Institute of Seismology, National Academy of Sciences of the Kyrgyz Republic)
• Martin B. Kalinowski (CTBTO Preparatory Commission)

417. Spatio-temporal Variations of Short-period S Wave Attenuation Field in the Region of the Semipalatinsk Test Site (Using Recordings of Nuclear and Chemical Explosions) (O2.5-417)

Ms Inna Sokolova (Geophysical Survey Russian Academy of Sciences)

20/06/2023, 15:00

T2.5 Historical Data from Nuclear Test Monitoring

Oral

We have been considering spatio-temporal variations of S wave attenuation field structure in the region of the Semipalatinsk test site (STS). We studied variations of amplitude ratio for Lg and Pg waves (parameter Lg/Pg) using seismograms of underground nuclear explosions (UNEs) and also calibration and quarry explosions, obtained by stations TLG and MKAR. We revealed essential temporal...

138. Historical Nuclear Test and Collapse Data from the Livermore National Network Between 1979-1992 (O2.5-138)

Ms Amanda Price (Lawrence Livermore National Laboratory (LLNL))

20/06/2023, 15:15

T2.5 Historical Data from Nuclear Test Monitoring

Oral

Historical geophysical data recorded during the peak of nuclear testing is rare and limited. Efforts have been made to preserve and digitize data but have minimal quality control from decades of lost history and retiring personnel. Furthermore, recent research into the subsequent collapses of cavities is stifled by the lack of continuous records to investigate historical collapses.

The...

518. General Discussion of Analog Seismic Data, and (at last) an Origin Time for the First Nuclear Explosion (TRINITY) (O2.5-518)

Mr Paul Granston Richards (Lamont-Doherty Earth Observatory, Columbia University)

20/06/2023, 16:00

T2.5 Historical Data from Nuclear Test Monitoring

Oral

Radio timing services failed for the first nuclear test (TRINITY, 16 July 1945), but were available to determine the origin time of an earlier 108 ton TNT explosion, conducted nearby on 7 May, 1945. We have scanned and digitized the vertical-component analog seismograms recorded at Tucson Observatory (TUO, at a distance of 437 km) for both events. These regional signals include Pn and Pg, and...