Free-field and decoupling analysis of MILL YARD data

Technical Report · Mon Dec 01 04:00:00 EST 1986

DOI:https://doi.org/10.2172/7167555· OSTI ID:7167555

Garbin, H D

Accelerometers were used to measure ground motion of the MILL YARD and DIAMOND BEECH events. MILL YARD was a small-yield event detonated in a hemispherical cavity. Its close-in, free-field data showed the presence of not only the primary explosive signal, but also motion emanating from a source located near the edge of the dome and the cavity floor. Data from accelerometers placed at the surface were used to find the decoupling factor as a function of frequency. At these ranges (approx. =50 m), there was a signal for frequencies >100 Hz. Comparison of the MILL YARD and DIAMOND BEECH high frequencies showed that their amplitudes were about the same, even though the yield of DIAMOND BEECH was two orders of magnitude larger than that of the MILL YARD. DIAMOND BEECH data were scaled to the yield of the MILL YARD, and a decoupling factor of 60 to 70 was found at low frequencies and 8 to 10 at high frequencies. 15 refs., 20 figs., 6 tabs.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 7167555
• Report Number(s): SAND-86-1702; ON: DE87004455
• Country of Publication: United States
• Language: English

Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
450200* -- Military Technology
Weaponry
& National Defense-- Nuclear Explosions & Explosives
BLAST EFFECTS
CAVITIES
COMPARATIVE EVALUATIONS
DATA ANALYSIS
DECOUPLING
EXPLOSIONS
FREQUENCY DEPENDENCE
GROUND MOTION
MOTION
NUCLEAR EXPLOSIONS
YIELDS