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Shock spectrum measurements

A total of twelve reed gages were installed to measure displacement shock spectra resulting from the Project Gnome underground nuclear explosion. Seven of the gages were installed on the ground surface at four locations out to a distance of 3000 feet from surface zero. All of these gages yielded usable records. Four of the gages were installed in the floor of the Gnome tunnel at two locations. Those at the 1033-foot range gave valid records; those at the 900-foot range were not recovered after the test. The one gage located underground at the International Minerals and Chemical Corporation (IMCC) mine, some nine miles distant, did not record any motion. The plotted displacement spectra showed the expected results in that displacements and peak accelerations decreased with increasing slant range for the surface gages. The vertical spectra were higher than the corresponding horizontal radial spectra for the surface gages. For the gages in the Gnome tunnel, the horizontal radial spectrum was higher than the vertical spectrum. (Author).

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  • "Vela uniform plowshare program, project gnome"@en
  • "Plowshare program, project gnome"@en

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  • "A total of twelve reed gages were installed to measure displacement shock spectra resulting from the Project Gnome underground nuclear explosion. Seven of the gages were installed on the ground surface at four locations out to a distance of 3000 feet from surface zero. All of these gages yielded usable records. Four of the gages were installed in the floor of the Gnome tunnel at two locations. Those at the 1033-foot range gave valid records; those at the 900-foot range were not recovered after the test. The one gage located underground at the International Minerals and Chemical Corporation (IMCC) mine, some nine miles distant, did not record any motion. The plotted displacement spectra showed the expected results in that displacements and peak accelerations decreased with increasing slant range for the surface gages. The vertical spectra were higher than the corresponding horizontal radial spectra for the surface gages. For the gages in the Gnome tunnel, the horizontal radial spectrum was higher than the vertical spectrum. (Author)."@en
  • "A total of twelve reed gages were installed to measure displacement shock spectre resulting from Project Gnome underground nuclear explosion."@en
  • "Ground shock spectrum measurements were made for the Prairie Flat 500-ton HE test and for the associated HEST test using mechanical reed gages. These tests were conducted at the Defence Research Establishment Suffield at Ralston, Alberta, Canada, and were sponsored by the Defense Atomic Support Agency. A total of 33 gages were used for the 500-ton test. Of these, 22 were in the free-field soil at ranges having overpressures of 840 (expected 1000), 600, and 300 psi and were oriented to measure vertical, horizontal-radial, and horizontal-transverse ground shock at the surface and at depths of 5 and 10 feet. The remaining 11 gages were in three model structures at overpressures of 600, 450, and 300 psi and were oriented vertically and horizontal-radially. The results of the 500-ton test indicated greater than expected ground shock. The model structures responded about as the free field at their mid-depths except for resonances peculiar to the structures themselves. The 500-ton free-field ground shock was somewhat greater than that from the HEST test especially in the horizontal direction. The spectra measured within the structures for the HEST and 500-ton tests were quite similar. (Author)."@en

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  • "Shock spectrum measurements"@en
  • "Shock Spectrum Measurements"@en
  • "SHOCK SPECTRUM MEASUREMENTS"@en

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