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On Cratering: A Brief History, Analysis, and Theory of Cratering

Description: Cratering is a subject that has been studied by many investigators for many years for many purposes. These purposes range from experimental studies of physical properties to large scale excavations using explosive charges of kiloton size. In the past ten years considerable effort has been devoted to cratering experiments for the purposes of determining the effects of cratering by nuclear explosions, with recent accent on Plowshare applications. From the large amount of data available for crater… more
Date: August 22, 1961
Creator: Nordyke, M. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Digital SLIFER Recorder, Model A. [Underground nuclear explosions]

Description: The Digital SLIFER Recorder (DSR) is an instrument that records a time-varying frequency signal in the range from 700 kHz to 1500 kHz with an amplitude greater than 200 mV. This signal is referenced to an input fiducial marker, and recording is initiated by an increase in the frequency of the signal. The primary purpose of this instrument is to record data from the SLIFER system. The DSR records 512 samples after the record trigger signal, with a sample interval of 50 ..mu..s (for a total recor… more
Date: November 1, 1977
Creator: Breding, D.R.; Fogel, D.; Loukota, J.J.; Worthen, G.S. & Watterberg, J.P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Bibliography of reports by US Geological Survey personnel pertaining to underground nuclear testing and radioactive waste disposal at the Nevada Test Site, and radioactive waste disposal at the WIPP Site, New Mexico, January 1, 1979-December 31, 1979

Description: This bibliography presents reports released to the public between January 1, 1979, and December 31, 1979, by personnel of the US Geological Survey. Reports include information on underground nuclear testing and waste management projects at the NTS (Nevada Test Site) and radioactive waste projects at the WIPP (Waste Isolation Pilot Plant) site, New Mexico. Reports on Project Dribble, Tatum Dome, Mississippi, previously prepared as administrative reports and released to the public as 474-series r… more
Date: January 1, 1980
Creator: Glanzman, V.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Inelastic processes in seismic wave generation by underground explosions

Description: Theories, computer calculations, and measurements of spherical stress waves from explosions are described and compared, with emphasis on the transition from inelastic to almost-elastic relations between stress and strain. Two aspects of nonspherical explosion geometry are considered: tectonic strain release and surface spall. Tectonic strain release affects the generation of surface waves; spall closure may also. The reduced-displacement potential is a common solution (the equivalent elastic so… more
Date: August 1, 1980
Creator: Rodean, H.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Geotechnical studies relevant to the containment of underground nuclear explosions at the Nevada Test Site

Description: The Department of Energy and the Department of Defense are actively pursuing a program of nuclear weapons testing by underground explosions at the Nevada Test Site (NTS). Over the past 11 years, scores of tests have been conducted and the safety record is very good. In the short run, emphasis is put on preventing the release of radioactive materials into the atmosphere. In the long run, the subsidence and collapse of the ground above the nuclear cavities also are matters of interest. Currently,… more
Date: May 1, 1982
Creator: Heuze, F.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Introduction to nuclear test engineering

Description: The basic information in this report is from a vu-graph presentation prepared to acquaint new or prospective employees with the Nuclear Test Engineering Division (NTED). Additional information has been added here to enhance a reader's understanding when reviewing the material after hearing the presentation, or in lieu of attending a presentation.
Date: July 15, 1982
Creator: O'Neal, W.C. & Paquette, D.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Estimate of earth media shear strength at the Nevada Test Site

Description: A method is presented of estimating the effective shear strength of the fractured rock that surrounds a nuclear detonation. To do this, we measure the cavity radii from previous detonations. We also use numerical computer codes to model the explosion phenomenology and develop the functional relationship between the normalized cavity displacement and the normalized shear strength of the rock. In this sense, the computer codes serve as replica models that are dimensionally analyzed to interpret t… more
Date: November 3, 1977
Creator: Terhune, R. W. & Glenn, H. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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E-Division semiannual report. Progress report, December 1, 1976--May 30, 1977. [LASL]

Description: Detector research and development are described first. Then, briefer reports are given on research on the following topics: electronic temperature monitoring and identification for livestock, electromagnetic probing (for fracture mapping), fiber optics for downhole instrumentation (for weapons testing), adaptive control applied to HVAC systems, energy environmental simulator, and high-temperature electronics. Engineering support (development projects, program support, instrumentation support) a… more
Date: November 1, 1977
Creator: Kelley, P.A. (comp.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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FPS camera sync and reset chassis

Description: The sync and reset chassis provides all the circuitry required to synchronize an event to be studied, a remote free-running focus projection and scanning (FPS) data-acquisition TV camera, and a video signal recording system. The functions, design, and operation of this chassis are described in detail.
Date: June 1, 1980
Creator: Yates, G. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

SLIFER Decipher

Description: The SLIFER Decipher (SD) is a digital instrument that records a time-varying frequency signal in the range from 700 kHz to 1500 kHz with an amplitude greater than 200 mV. This signal is referenced to an input fiducial marker. The primary purpose of this instrument is to reduce data recorded on magnetic tape from the SLIFER system used in underground nuclear tests. The SD records 512 samples after the fiducial signal, with a sample interval of 50 ..mu..s (for a total recording time of 25.55 ms).… more
Date: October 1, 1977
Creator: Breding, D.R.; Worthen, G.S.; Loukota, J.J.; Fogel, D. & Watterberg, J.P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

DENBIG and DARN. Codes for the reduction of digital pinex data

Description: Code DENBIG was written to reduce the digital pinex data received from the Nevada Test Site (NTS) and Transient Reactor Test Facility (TREAT) experiments. Output modes are density plots, contour plots, splatter plots, equivalent radius calculations, line cuts, and reduced data in matrix form. Provisions are included to incorporate subtraction of dry-run data, transfer function corrections, and pinhole absorption corrections. Code DARN processes pinex data in which electromagnetic pulse shifts h… more
Date: October 1, 1977
Creator: Beyer, L.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Calculated concentrations of any radionuclide deposited on the ground by release from underground nuclear detonations, tests of nuclear rockets, and tests of nuclear ramjet engines

Description: This report presents calculated gamma radiation exposure rates and ground deposition of related radionuclides resulting from three types of event that deposited detectable radioactivity outside the Nevada Test Site complex, namely, underground nuclear detonations, tests of nuclear rocket engines and tests of nuclear ramjet engines.
Date: November 1, 1981
Creator: Hicks, H.G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Intermediate simulation of the inverse seismic problem

Description: An introductory study of the inverse seismic problem is performed. The complex cepstrum of a seismogram generated by the convolution of three factors, the Seggern-Blandford source function of an explosion, the Futterman mantle transfer function, and the SRO seismometer transfer function, is used. For a given Q and yield, a synthetic seismogram is computed. Arbitrary values of Q and yield are introduced, and a search is conducted to find that pair of values that minimized the cepstral difference… more
Date: March 1, 1980
Creator: Brolley, J.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Project Rio Blanco. Environmental surveillance summary report, Part 2, July 1973-December 1976

Description: Project RIO BLANCO was a joint venture undertaken by the US Atomic Energy Commission (AEC) representing the federal government, and CER Geonuclear Corporation representing private industry. As originally conceived, Phase I of the project involved the simultaneous detonation of three nuclear devices in a single emplacement well, and was the third event in the AEC's Plowshare program to develop peaceful uses for nuclear devices. The main purpose of the RIO BLANCO experiment, as well as that of th… more
Date: 1977~
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Application of the implicit TENSOR code to studies of containment of undergound nuclear tests

Description: The TENSOR code, a two-dimensional finite-difference code, has been used extensively for the solution of stress wave propagation problems in materials, particularly those associated with the containment of underground nuclear test. These problems are typically characterized by shock waves at early times and by nearly incompressible flow at later times. To address this type of problem more economically, an implicit Newmark time integration has been implemented. Implicit differencing requires the… more
Date: February 1, 1982
Creator: Burton, D.E.; Bryan, J.B.; Lettis, L.A. Jr. & Rambo, J.T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Portable, remotely operated, computer-controlled, quadrupole mass spectrometer for field use

Description: A portable, remote-controlled mass spectrometer was required at the Nevada Test Site to analyze prompt post-event gas from the nuclear cavity in support of the underground testing program. A Balzers QMG-511 quadrupole was chosen for its ability to be interfaced to a DEC LSI-11 computer and to withstand the ground movement caused by this field environment. The inlet system valves, the pumps, the pressure and temperature transducers, and the quadrupole mass spectrometer are controlled by a read-o… more
Date: April 1, 1982
Creator: Friesen, R.D.; Newton, J.C. & Smith, C.F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Rock equation of state: a constitutive computer model

Description: A constitutive model for a rock equation of state was developed in HEMP and CEL-HEMP computer codes. The model includes the mechanical and thermal properties of soil, such as elasticity, pore closure, compaction, and vaporization. Three test problems were computed using the equation of state: ground motion following the LATIR event, impact vaporization of preheated plates, and surface motion produced from exploding a 3.7-kg(10-lb) charge at a depth of 6.5 m. Agreement between our computations f… more
Date: August 24, 1977
Creator: Kamegai, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Measured air overpressures, soil-particle pressures, and slumps during the pre-ASIAGO U2Ar stemming experiment

Description: On November 15, 1976, Lawrence Livermore Laboratory completed its first comprehensive stemming experiment for measuring downhole parameters while varying fill material and rate. Stemming can be defined as backfilling a hole in which a device has been placed to prevent leakage of radioactive materials or gases to the surface. A computer code is being developed for stemming operations, and this experiment was designed to measure parameters under different stemming conditions so the code could be … more
Date: January 4, 1978
Creator: Freynik, H.S. Jr.; Roach, D.R. & Dittbenner, G.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Chemical tracers in Hybla Gold working room. Final report

Description: Chemical tracers were placed in the working room for the Hybla Gold event to aid in diagnosing flow of high-energy gases down expanding pipes leading from the room. If post-shot reentry is made, the tracers could provide valuable knowledge concerning pipe closure, mixing of gases from various locations, and volume of gas flow into various sizes of pipes.
Date: January 1, 1978
Creator: Killian, B.G. & McQueen, J.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Results from exploratory drill hole UE2ce, Northwest Yucca Flat, Nevada Test Site, near the NASH Event

Description: Exploratory drill hole UE2ce was drilled in January 1977 to determine geologic and geophysical characteristics of this site. This report presents geophysical logs, lithology, geologic structure, water table measurements, and physical properties for this drill hole. The data are then extrapolated to the NASH site, an event in U2ce, 55.6 m due north of UE2ce.
Date: March 3, 1982
Creator: Pawloski, G.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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