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  • 1
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    Some seismic results from th US-USSR joint verification underground explosions (1990)
    Her Majesty's Stationery Office
    In:  AWE Report No. O 6/90, ed. by Atomic Weapons Establishment, London, Her Majesty's Stationery Office, vol. 10, no. 007, 23 pp., pp. 1358-1361, (ISBN 3-933346-037)
    Details
    Publication Date: 1990
    Keywords: Seismology ; Nuclear explosion ; Spectrum ; Data analysis / ~ processing
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    BIBLIOGRAPHY SEISMOLOGY
  • 2
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    Analysis of seismograms from nuclear explosions of known yield at Delgen Mountain and Konystan in East Kazakhstan, USSR (1992)
    Her Majesty's Stationery Office
    In:  AWE Report No. O 2/92, ed. by Atomic Weapons Establishment, London, Her Majesty's Stationery Office, vol. C 560, 183 pp., no. 51, pp. 193-210, (ISBN 3-933346-037)
    Details
    Publication Date: 1992
    Keywords: Seismology ; Nuclear explosion ; Source ; Data analysis / ~ processing ; Moment tensor ; Magnitude
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    BIBLIOGRAPHY SEISMOLOGY
  • 3
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    A system for mapping and monitoring subsurface processes in enhanced-recovery schemes (1979)
    In:  Istanbul, no. 132, pp. 7-22
    Details
    Publication Date: 1979
    Keywords: Crustal deformation (cf. Earthquake precursor: deformation or strain) ; Applied geophysics
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    BIBLIOGRAPHY SEISMOLOGY
  • 4
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    The Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) (1993)
    In:  Other Sources
    Details
    Publication Date: 2011-08-24
    Description: AVIRIS is a facility consisting of a flight system, a ground data system, a calibration facility, and a full-time operations team. The facility was developed by JPL under funding from NASA. NASA also provides funding for operations and maintenance. The flight system is a whisk-broom imager that acquires data in 224 narrow, contiguous spectral bands covering the solar reflected portion of the electromagnetic spectrum. It is flown aboard the NASA high altitude ER-2 research aircraft. The ground data system is a facility dedicated to the processing and distribution of data acquired by AVIRIS. It operates year round at JPL. The calibration facility consists of a calibration laboratory at JPL and a suite of field instruments and procedures for performing inflight calibration of AVIRIS. A small team of engineers, technicians, and scientists supports a yearly operations schedule that includes 6 months of flight operations, 6 months of routine ground maintenance of the flight system, and year-round data processing and distribution. Details of the AVIRIS system, its performance history, and future plans are described.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Remote Sensing of Environment (ISSN 0034-4257); 44; 2-3; p. 127-143.
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    NASA TECHNICAL REPORTS
  • 5
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    Current instrument status of the Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) (1991)
    In:  Other Sources
    Details
    Publication Date: 2011-08-24
    Description: An upgraded version of AVIRIS, an airborne imaging spectrometer based on a whiskbroom-type scanner coupled via optical fibers to four dispersive spectrometers, that has been in operation since 1987 is described. Emphasis is placed on specific AVIRIS subsystems including foreoptics, fiber optics, and an in-flight reference source; spectrometers and detector dewars; a scan drive mechanism; a signal chain; digital electronics; a tape recorder; calibration systems; and ground support requirements.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: In: Infrared technology XVII; Proceedings of the Meeting, San Diego, CA, July 22-26, 1991 (A93-38376 15-35); p. 164-175.
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    The effects of stability augmentation on the gust response of a STOL aircraft during a curved manual approach (1975)
    In:  CASI
    Details
    Publication Date: 2006-01-11
    Description: The task of investigating the effect of SAS was formulated as two optimal control problems for stochastic systems: (1) to compute SAS gains with a rate model in the performance index algorithm; and (2) to calculate the pilot gains and system gust response using an optimal pilot model. Both problems were solved to yield reasonable low gains for the pilot and SAS, and the lateral directional mode poles and the longitudinal short period poles could be placed accurately by the model matching algorithm. Of the longitudinal (SAS) poles achieved, the vertical rms path error was least for the unaugmented poles. The lateral rms path error was an order of magnitude larger than the vertical error and showed a plus or minus 50 percent variation with SAS. It increased with dutch roll frequency and damping, and it decreased most significantly with increased roll stability. The variation in lateral error with bank angle for curved flight was also a significant function of the augmented poles.
    Keywords: MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT
    Type: NASA. Ames Res. Center 11th Ann. Conf. on Manual Control; p 486-503
    Format: text
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    NASA TECHNICAL REPORTS
  • 7
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    The magnetic network location of explosive events observed in the solar transition region (1991)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: Compact short-lived explosive events have been observed in solar transition region lines with the High-Resolution Telescope and Spectrograph (HRTS) flown by the Naval Research Laboratory on a series of rockets and on Spacelab 2. Data from Spacelab 2 are coaligned with a simultaneous magnetogram and near-simultaneous He I 10,380 -A spectroheliogram obtained at the National Solar Observatory at Kitt Peak. The comparison shows that the explosive events occur in the solar magnetic network lanes at the boundaries of supergranular convective cells. However, the events occur away from the larger concentrations of magnetic flux in the network, in contradiction to the observed tendency of the more energetic solar phenomena to be associated with the stronger magnetic fields.
    Keywords: SOLAR PHYSICS
    Type: Astrophysical Journal, Part 1 (ISSN 0004-637X); 370; 775-778
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    NASA TECHNICAL REPORTS
  • 8
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    Some proposed experiments with the Communications Technology Satellite (1975)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: The satellite (CTS) is tentatively scheduled to be launched in January 1976. It will be available for educational and societal experimentation early in 1977. This paper will outline some of the educational experiments involving the CTS. The major object of the experiments is to assess the communications and educational implications of the CTS in northern Ontario; the existing communications facilities for this region of approximately 725,000 sq km (inhabited largely by native people) are extremely limited. It is expected to assess the extent to which: (1) a satellite communications system might resolve the communications deficiency, (2) the native people will use the experimental facility, and (3) health and general educational programs, especially utilizing the interactive mode, will be viable.
    Keywords: COMMUNICATIONS AND RADAR
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    NASA TECHNICAL REPORTS
  • 9
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    Sulfur gas exchange in Sphagnum-dominated wetlands (1992)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: Sulfur gases are important components of the global cycle of S. They contribute to the acidity of precipitation and they influence global radiation balance and climate. The role of terrestrial sources of biogenic S and their effect on atmospheric chemistry remain as major unanswered questions in our understanding of the natural S cycle. The role of northern wetlands as sources and sinks of gaseous S was investigated by measuring rates of S gas exchange as a function of season, hydrologic conditions, and gradients in trophic status. The effects of inorganic S input on the production and emission of gaseous S were also investigated. Experiments were conducted in wetlands in New Hampshire, particularly a poor fen, fens within the Experimental Lakes Area (ELA) in Ontario, Canada and in freshwater and marine tundra. Emissions were determined using Teflon enclosures, gas cryotrapping methods, and gas chromatography (GC) with flame photometric detection. Dynamic (sweep flow) and static enclosures were employed. Dissolved gases were determined by gas stripping followed by GC.
    Keywords: ENVIRONMENT POLLUTION
    Type: Terminal Decomposition and Gaseous Sulfur Release from Tidal Wetlands; 1 p
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 10
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    Waste heat management and regulatory problems (1977)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Keywords: ENVIRONMENT POLLUTION
    Type: NASA, Washington Proc. of the Conf. on Waste Heat Management and Util., volume 1; 11 p
    Format: text
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    NASA TECHNICAL REPORTS
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