Accession Number:

ADA995143

Title:

General Report of Weapons Tests. Ground-Motion Studies on Operations IVY and CASTLE. Extracted Version

Descriptive Note:

Corporate Author:

KAMAN TEMPO SANTA BARBARA CA

Personal Author(s):

• Perret, W. R.

Report Date:

1981-11-01

Pagination or Media Count:

52.0

Abstract:

Ground motion produced by Mike shot of Operation Ivy Project 6.5 was measured as three components of acceleration at four ground ranges between 8000 and 114,000 ft. Gauges were in sand below the water table at depths of about 17 ft. Similar measurements were made on a massive concrete instrument shelter at about 30,000 ft from Ground Zero. A rough empirical relation was derived for scaled peak ground-transmitted acceleration as a function of scaled ground range and compared with similar data from Operation Greenhouse. The peak vertical acceleration produced by incidence of the air shock in the vicinity of the gauge station was related empirically to the peak air overpressure. These relations are necessarily rough because of the few reliable data available, but are probably adequate for estimating effects of megaton weapon bursts. The acceleration data were converted to velocity-time and displacement-time information. Ground-motion data derived from shot 3 of Operation Castle Project 1.7 are presented In Chap. 2. These data, because of the low yield of the shot, are inadequate for correlation with the results of other tests. Procedures employed for correction of acceleration data integrated to velocities and displacements are discussed in Appendix B.

Descriptors:

• *GROUND MOTION
• *NUCLEAR EXPLOSIONS
• CONCRETE
• DATA PROCESSING
• GAGES
• GRAPHS
• INSTRUMENTATION
• MEASUREMENT
• NUCLEAR WEAPONS
• RANGE(DISTANCE)
• SAND
• SHELTERS
• WEAPONS EFFECTS

Subject Categories:

• Test Facilities, Equipment and Methods
• Seismic Detection and Detectors
• Nuclear Weapons

Distribution Statement:

APPROVED FOR PUBLIC RELEASE