Review of Attenuation in Salt at Moderate Strains
- Steven R. Taylor,
- Howard J. Patton and
- Paul G. Richards
Published Online: 18 MAR 2013
Copyright 1991 by the American Geophysical Union.
Explosion Source Phenomenology
How to Cite
Wortman, W. R. and McCartor, G. D. (1991) Review of Attenuation in Salt at Moderate Strains, in Explosion Source Phenomenology (eds S. R. Taylor, H. J. Patton and P. G. Richards), American Geophysical Union, Washington, D. C.. doi: 10.1029/GM065p0099
- Published Online: 18 MAR 2013
- Published Print: 1 JAN 1991
Print ISBN: 9780875900315
Online ISBN: 9781118663820
- Underground nuclear explosions—Detection—Congresses;
Experiments which reflect the attenuation of propagating pulses in salt in the moderate strain regime of 10−3 to 10−6, which corresponds roughly to ranges of 100 to 10,000 meters from an explosion with a yield of 1 kt, are reviewed. A transition from nonlinear to linear behavior occurs in this interval. This regime is important for monitoring of nuclear test treaties since models for linear source functions are normally defined inside it. Salt is of interest since it can be readily mined to produce decoupling cavities. Data from explosive sources, nuclear and chemical field and small-scale laboratory tests, resonant bars and ultrasonic pulse methods are summarized. The experiments are diverse in their character and frequency and no single experiment covers the nonlinear-linear transition. However, the totality suggests that attenuation in salt does decrease dramatically over the moderate strain regime. A full physical description does not exist although shear failure or yielding can account for some effects.