Preliminary theoretical acoustic and rf sounding calculations for MILL RACE

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As participant in DOE/ISA's Ionospheric Monitoring Program, LLNL has the responsibility of providing theoretical understanding and calculational support for experimental activities carried out by Los Alamos National Laboratory in using ionospheric sounders to remotely detect violent atmospheric phenomena. We have developed a system of interconnected computer codes which simulate the entire range of atmospheric and ionospheric processes involved in this remote detection procedure. We are able to model the acoustic pulse shape from an atmospheric explosion, the subsequent nonlinear transport of this energy to all parts of the immediate atmosphere including the ionosphere, and the propagation of high-frequency ratio waves ... continued below

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Pages: 23

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Warshaw, S.I. & Dubois, P.F. November 2, 1981.

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Description

As participant in DOE/ISA's Ionospheric Monitoring Program, LLNL has the responsibility of providing theoretical understanding and calculational support for experimental activities carried out by Los Alamos National Laboratory in using ionospheric sounders to remotely detect violent atmospheric phenomena. We have developed a system of interconnected computer codes which simulate the entire range of atmospheric and ionospheric processes involved in this remote detection procedure. We are able to model the acoustic pulse shape from an atmospheric explosion, the subsequent nonlinear transport of this energy to all parts of the immediate atmosphere including the ionosphere, and the propagation of high-frequency ratio waves through the acoustically perturbed ionosphere. Los Alamos' coverage of DNA's MILL RACE event provided an excellent opportunity to assess the credibility of the calculational system to correctly predict how ionospheric sounders would respond to a surface-based chemical explosion. In this experiment, 600 tons of high explosive were detonated at White Sands Missile Range at 12:35:40 local time on 16 September 1981. Vertical incidence rf phase sounders and bistatic oblique incidence rf sounders fielded by Los Alamos and SRI International throughout New Mexico and southern Colorado detected the ionospheric perturbation that ensued. A brief account of preliminary calculations of the acoustic disturbance and the predicted ionospheric sounder signatures for MILL RACE is presented. (WHK)

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Pages: 23

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NTIS, PC A02/MF A01.

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  • Other Information: Portions of document are illegible

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  • Other: DE82009300
  • Report No.: UCID-19231
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/5479900 | External Link
  • Office of Scientific & Technical Information Report Number: 5479900
  • Archival Resource Key: ark:/67531/metadc1093942

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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Creation Date

  • November 2, 1981

Added to The UNT Digital Library

  • Feb. 10, 2018, 10:06 p.m.

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  • April 27, 2018, 3:23 p.m.

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Warshaw, S.I. & Dubois, P.F. Preliminary theoretical acoustic and rf sounding calculations for MILL RACE, report, November 2, 1981; [Livermore,] California. (digital.library.unt.edu/ark:/67531/metadc1093942/: accessed December 12, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.