ISC origin times for announced and presumed underground nuclear explosions at several test sites

Technical Report · Mon Dec 03 00:00:00 EST 1979

DOI:https://doi.org/10.2172/5636895· OSTI ID:5636895

Rodean, H C

Announced data for US and French underground nuclear explosions indicate that nearly all detonations have occurred within one or two tenths of a second after the minute. This report contains ISC origin-time data for announced explosions at two US test sites and one French test site, and includes similar data for presumed underground nuclear explosions at five Soviet sites. Origin-time distributions for these sites are analyzed for those events that appeared to be detonated very close to the minute. Particular attention is given to the origin times for the principal US and Soviet test sites in Nevada and Eastern Kazakhstan. The mean origin times for events at the several test sites range from 0.4 s to 2.8 s before the minute, with the earlier mean times associated with the Soviet sites and the later times with the US and French sites. These times indicate lower seismic velocities beneath the US and French sites, and higher velocities beneath the sites in the USSR 9 figures, 8 tables.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5636895
• Report Number(s): UCRL-52882; TRN: 80-005351
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
NUCLEAR EXPLOSIONS
TABLES
SEISMIC WAVES
VELOCITY
ALGERIA
EXPERIMENTAL DATA
NEVADA TEST SITE
TIMING PROPERTIES
UNDERGROUND EXPLOSIONS
USSR
AFRICA
ASIA
DATA
DATA FORMS
EUROPE
EXPLOSIONS
INFORMATION
NUMERICAL DATA
580201* - Geophysics- Seismology & Tectonics- (1980-1989)
450300 - Military Technology
Weaponry
& National Defense- Nuclear Explosion Detection