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  • 1
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    A re-assessment of focal depth distributions in southern Iran, the Tien Shan and northern India: do earthquakes really occur in the continental mantle? (2000)
    In:  Geophys. J. Int., San Francisco, Pergamon, vol. 143, no. 3, pp. 629-661, pp. L15303, (ISSN: 1340-4202)
    Details
    Publication Date: 2000
    Keywords: Hypocentral depth ; CRUST ; earth mantle ; Seismology ; Rheology ; Lithosphere ; GJI
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    BIBLIOGRAPHY SEISMOLOGY
  • 2
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    Correlation of response spectral values for multicomponent ground motions (2006)
    In:  Bulletin of the Seismological Society of America, Washington D.C., Bundesanstalt für Geowissenschaften und Rohstoffe, vol. 96, no. 1, pp. 215-227, pp. L09611
    Details
    Publication Date: 2006
    Keywords: Seismology ; Spectrum ; Site amplification ; Earthquake engineering, engineering seismology ; Correlation ; BSSA
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    BIBLIOGRAPHY SEISMOLOGY
  • 3
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    Backazimuth estimation reliability using surface wave polarization (2004)
    In:  Geophys. Res. Lett., Washington D.C., Bundesanstalt für Geowissenschaften und Rohstoffe, vol. 31, no. 9, pp. 1-4, pp. L09611
    Details
    Publication Date: 2004
    Description: Backazimuth estimates derived from surface wave polarization can be used to test association of an observed surface wave with a seismic event. However, commonly used techniques for estimating the backazimuth are subject to a number of errors and are often inaccurate. We evaluate the performance of a new algorithm for determining Rayleigh wave propagation direction from the cross-correlation of the horizontal and Hilbert transformed vertical seismograms. This proves to be more accurate and much less error-prone than current automatic processing procedures, and the cross-correlation value provides a good measure of the reliability of the backazimuth estimate. Consequently, the new algorithm will permit more reliable event association at a lower magnitude threshold.
    Keywords: Horizontal to vertical spectral ratio ; Nakamura ; Spectrum ; NOISE ; Site amplification ; Surface waves ; Polarization ; Rayleigh waves ; Correlation ; Hilbert transform ; 7200 ; Seismology ; 7219 ; Seismology: ; Nuclear ; explosion ; seismology ; 7255 ; Surface ; waves ; and ; free ; oscillations ; GRL
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    BIBLIOGRAPHY SEISMOLOGY
  • 4
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    Grouted sediment slices show signs of earthquake shaking (2001)
    In:  Eos Trans. AGU, Minsk, Elsevier Scientific Publishing Company, vol. 82, no. 49, pp. 603, pp. B12308
    Details
    Publication Date: 2001
    Keywords: paleo ; Seismology ; Geol. aspects ; 7221 ; Seismology ; Paleoseismology ; 1829 ; Hydrology ; Groundwater ; hydrology ; 7294 ; Instruments ; and ; techniques
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    BIBLIOGRAPHY SEISMOLOGY
  • 5
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    Source-dependent frequency content of ultrashallow seismic reflection data (2000)
    In:  Bull. Seism. Soc. Am., Washington D.C., Bundesanstalt für Geowissenschaften und Rohstoffe, vol. 90, no. 2, pp. 494-499, pp. L09611
    Details
    Publication Date: 2000
    Keywords: Seismology ; Seismics (controlled source seismology) ; Spectrum ; Source ; BSSA
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    BIBLIOGRAPHY SEISMOLOGY
  • 6
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    Real-time earthquake location using Kirchhoff reconstruction (2005)
    In:  Bull. Seism. Soc. Am., Washington D.C., Bundesanstalt für Geowissenschaften und Rohstoffe, vol. 95, no. 2, pp. 699-707, pp. L09611
    Details
    Publication Date: 2005
    Keywords: Seismology ; Real time earthquake monitoring ; Location ; Data analysis / ~ processing ; BSSA
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    BIBLIOGRAPHY SEISMOLOGY
  • 7
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    Standards Development Activities at White Sands Test Facility (2003)
    In:  CASI
    Details
    Publication Date: 2018-06-12
    Description: The development of standards and standard activities at the JSC White Sands Test Facility (WSTF) has been expanded to include the transfer of technology and standards to voluntary consensus organizations in five technical areas of importance to NASA. This effort is in direct response to the National Technology Transfer Act designed to accelerate transfer of technology to industry and promote government-industry partnerships. Technology transfer is especially important for WSTF, whose longterm mission has been to develop and provide vital propellant safety and hazards information to aerospace designers, operations personnel, and safety personnel. Meeting this mission is being accomplished through the preparation of consensus guidelines and standards, propellant hazards analysis protocols, and safety courses for the propellant use of hydrogen, oxygen, and hypergols, as well as the design and inspection of spacecraft pressure vessels and the use of pyrovalves in spacecraft propulsion systems. The overall WSTF technology transfer program is described and the current status of technology transfer activities are summarized.
    Keywords: Propellants and Fuels
    Type: 5th Conference on Aerospace Materials, Processes, and Environmental Technology; NASA/CP-2003-212931
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 8
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    Hypergol Systems: Design, Buildup, and Operation (2006)
    In:  CASI
    Details
    Publication Date: 2018-06-11
    Description: This course was developed by personnel at the NASA JSC White Sands Test Facility in conjunction with the NASA Safety Training Center (NSTC). The NSTC was established in May 1991 by the NASA Headquarters Safety Directorate to provide up-to-date, high-quality, NASA specific safety training on location at NASA centers, or simultaneously to multiple centers over the Video Teleconferencing System (ViTS). Our desire is to establish and maintain a strong, long-lasting relationship with all NASA centers in order to fulfill your safety training needs on a cost-effective basis. Our ultimate goal is to provide a positive contribution to safe operations at NASA. NSTC Course 055 is a 2-day course discussing the safe usage of hypergols (hydrazine fuels and nitrogen tetroxide). During the course we will identify the hazards associated with hypergols including toxicity, reactivity, fire, and explosion. Management of risk is discussed in terms of the primary engineering controls design, buildup, and operation; and secondary controls personal protective equipment and detectors/monitors. The emphasis is on the design and buildup of compatible systems and the safe operation of these systems by technicians and engineers.
    Keywords: Propellants and Fuels
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 9
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    Cryogenic Test Capability at Marshall Space Flight Center's X-ray Cryogenic Test Facility (2006)
    In:  Other Sources
    Details
    Publication Date: 2019-07-19
    Description: Marshall Space Flight Center's X-ray & Cryogenic Test Facility (XRCF) has been performing sub-liquid nitrogen temperature testing since 1999. Optical wavefront measurement, thermal structural deformation, mechanism functional & calibration, and simple cryo-conditioning tests have been completed. Recent modifications have been made to the facility in support of the James Webb Space Telescope (JWST) program. The chamber's payload envelope and the facility s refrigeration capacity have both been increased. Modifications have also been made to the optical instrumentation area improving access for both the installation and operation of optical instrumentation outside the vacuum chamber. The facility's capabilities, configuration, and performance data will be presented.
    Keywords: Propellants and Fuels
    Type: 24th Space Simulation Conference; Nov 06, 2006 - Nov 09, 2006; Annapolis, MD; United States
    Format: text
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    NASA TECHNICAL REPORTS
  • 10
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    Hydrogen Peroxide - Material Compatibility Studied by Microcalorimetry (2003)
    In:  CASI
    Details
    Publication Date: 2019-08-13
    Description: Environmental and toxicity concerns with current hypergolic propellants have led to a renewed interest in propellant grade hydrogen peroxide (HP) for propellant applications. Storability and stability has always been an issue with HP. Contamination or contact of HP with metallic surfaces may cause decomposition, which can result in the evolution of heat and gas leading to increased pressure or thermal hazards. The NASA Johnson Space Center White Sands Test Facility has developed a technique to monitor the decompositions of hydrogen peroxide at temperatures ranging from 25 to 60 C. Using isothermal microcalorimetry we have measured decomposition rates at the picomole/s/g level showing the catalytic effects of materials of construction. In this paper we will present the results of testing with Class 1 and 2 materials in 90 percent hydrogen peroxide.
    Keywords: Propellants and Fuels
    Type: JSC-CN-2366 , JSC-CN-7793 , 31st JANNAF PDCS; Mar 24, 2003 - Mar 27, 2003; Columbia, MD; United States|20th S and EPS Joint Meeting; Mar 24, 2003 - Mar 27, 2003; Columbia, MD; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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