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Title: Magnetic Effects from Underground Nuclear Explosions

 [1];  [1];  [1];
  1. National Security Technologies, LLC. (NSTec), Mercury, NV (United States)
Publication Date:
Research Org.:
Nevada Test Site/National Security Technologies, LLC (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation (NA-20); USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation Research and Development (NA-22)
OSTI Identifier:
Report Number(s):
DOE Contract Number:
Resource Type:
Resource Relation:
Conference: 2017 Nuclear Security Applications Research and Development Program Review Meeting April 6, 2017, US DOE, National Nuclear Security Administration Nevada Field Office, North Las Vegas, NV
Country of Publication:
United States
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 47 OTHER INSTRUMENTATION; electromagnetic pulse, underground nuclear explosion, paleomagnetism

Citation Formats

Prothro, Lance, Townsend, Margaret, Meidinger, Al, and Verosub, Kenneth. Magnetic Effects from Underground Nuclear Explosions. United States: N. p., 2017. Web.
Prothro, Lance, Townsend, Margaret, Meidinger, Al, & Verosub, Kenneth. Magnetic Effects from Underground Nuclear Explosions. United States.
Prothro, Lance, Townsend, Margaret, Meidinger, Al, and Verosub, Kenneth. Thu . "Magnetic Effects from Underground Nuclear Explosions". United States. doi:.
title = {Magnetic Effects from Underground Nuclear Explosions},
author = {Prothro, Lance and Townsend, Margaret and Meidinger, Al and Verosub, Kenneth},
abstractNote = {},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Apr 06 00:00:00 EDT 2017},
month = {Thu Apr 06 00:00:00 EDT 2017}

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  • We used Axially Symmetric Magnetic Gages to measure in situ particle velocities at three locations near an underground nuclear explosion. The data show a nearly classic'' shockwave at shock stresses less than 15kb. There is evidence that a shock precursor was also present at the three gage locations. We discuss how the gage operates, how the measurements were made, and the implications that accurate in situ particle velocity measurements may have on nuclear testing treaties. 3 refs., 5 figs.
  • Completely contained underground nuclear explosions produce cavities filled with gas (the nuclear explosive plus some of the surrounding rock) and lined with a layer of melted rock. The surrounding rock is crushed and fractured out to distances of several cavity radii. The crushed and fractured rock above the cavity subsequently collapses into the cavity, forming a chimney several cavity radii in height. The process equations for conservation of mass and energy for gas flow in a porous medium are presented. The equations for fluid motion and heat transfer coefficient are discussed in more detail. The relative roles of heat transfermore » by conduction and transport by gas flow are studied, and it is found that conduction is relatively unimportant for the problems considered. The use of nuclear explosives is much more beneficial in low-permeability than in high-permeability formations. The rubble-filled chimney produced by a nuclear explosion adds significant capability to a well in meeting intermittent peak load demands. The chimney is also very useful in that gas is readily pumped into it for storage.« less
  • Two reports have been issued by the USSR which examine the mechanical effects and radioactive contamination of the environment from underground nuclear explosions. In reviewing the mechanical effects, the institute of Terrestrial Physics of the USSR Academy of Sciences emphasizes the advantages of nuclear explosives, namely the tremendous power and small dimensions, in the industrial and construction fields. The authors note that the mechanical effects are based not only upon the explosive yield but also upon the thermodynamic properties of the cavity gases during expansion. These properties may vary widely depending upon the rock material. A list of the basicmore » parameters affecting the mechanical effects of contained nuclear explosions includes: cavity volume, dimensions of the chimney, degree of rock fracturing, intensity of the compression wave as a function of distance from shot point, and seismic effects. The second paper describes the phenomenology of radioactive contamination of the environment for both contained and excavation explosions.« less