Accession Number:

AD0739179

Title:

Source Time Functions and Spectra for Underground Nuclear Explosions

Descriptive Note:

Corporate Author:

TELEDYNE GEOTECH ALEXANDRIA VA SEISMIC DATA LAB

Personal Author(s):

• Von Seggern, D. H.
• Blandford, R. R.

Report Date:

1971-12-17

Pagination or Media Count:

49.0

Abstract:

The model of Haskell for explosion source time functions and spectra fails to satisfy data in the short-period band recorded teleismically from the three Amchitka Island underground nuclear tests LONG SHOT, MILROW and CANNIKAN. A more recent model due to Mueller and Murphy satisfies the data quite well. The difference in the two models is basically in the falloff at high frequencies. A simple revision of Haskells model produces waveforms and spectra nearly identical to ones from Mueller and Murphys model. This revision requires velocity waveforms to have a rise time of extremely short duration at the elastic boundary, a premise validated by actual near-field measurements.

Descriptors:

• *NUCLEAR EXPLOSIONS
• *SEISMIC WAVES
• *UNDERGROUND EXPLOSIONS
• ALEUTIAN ISLANDS
• ASYMPTOTIC SERIES
• CORRELATION TECHNIQUES
• EARTHQUAKES
• POWER SPECTRA
• PRESSURE
• SOURCES

Subject Categories:

• Seismology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE