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  • EARTH RESOURCES AND REMOTE SENSING  (486)
  • SPACE RADIATION  (355)
  • 1970-1974  (841)
  • 1920-1924
  • 1974  (841)
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Keywords
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  • 1970-1974  (841)
  • 1920-1924
Year
  • 1
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    Image data processing of earth resources management (1974)
    In:  CASI
    Details
    Publication Date: 2006-05-07
    Description: Various image processing and information extraction systems are described along with the design and operation of an interactive multispectral information system, IMAGE 100. Analyses of ERTS data, using IMAGE 100, over a number of U.S. sites are presented. The following analyses are included: investigations of crop inventory and management using remote sensing; and (2) land cover classification for environmental impact assessments. Results show that useful information is provided by IMAGE 100 analyses of ERTS data in digital form.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Chamber of Commerce Proc. of the 1st 1974 Technol. Transfer Conf.; p 201-218
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Possibility of using sources of vacuum ultraviolet irradiation to solve problems of space material science (1974)
    In:  CASI
    Details
    Publication Date: 2006-01-11
    Description: An urgent problem in space materials science is simulating the interaction of vacuum ultraviolet (VUV) of solar emission with solids in space conditions, that is, producing a light source with a distribution that approximates the distribution of solar energy. Information is presented on the distribution of the energy flux of VUV of solar radiation. Requirements that must be satisfied by the VUV source used for space materials science are formulated, and a critical evaluation is given of the possibilities of using existing sources for space materials science. From this evaluation it was established that none of the sources of VUV satisfies the specific requirements imposed on the simulator of solar radiation. A solution to the problem was found to be in the development of a new type of source based on exciting a supersonic gas jet flowing into vacuum with a sense electron beam. A description of this gas-jet source, along with its spectral and operation characteristics, is presented.
    Keywords: SPACE RADIATION
    Type: Space Res. in the Ukraine, No. 3 (NASA-TT-F-15537); p 102-123
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Effect of small flares in the neutral component of secondary cosmic radiation (1974)
    In:  CASI
    Details
    Publication Date: 2006-01-11
    Description: The results are presented of an investigation of the effect of small flares, scale divisions 1 and 1(+), in the neutron component of secondary cosmic radiation from the data of neutron supermonitors at the stations of Kiev, Bukhta Tiksi, and Deep River. It is shown that flares of scale divisions 1 and 1(+) are accompanied by an effect in the neutron component amounting to about 0.4%. A mechanism is presented for calculating the outflow of particles accelerated in small flares, owing to diffusion across the magnetic field of a trap.
    Keywords: SPACE RADIATION
    Type: Space Res. in the Ukraine, No. 3 (NASA-TT-F-15537); p 77-85
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    NASA TECHNICAL REPORTS
  • 4
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    Analysis of the nature of excessive cosmic radiation in the area of the Brazilian magnetic anomaly at altitudes 250-500km, from Kosmos-225 satellite data (1974)
    In:  CASI
    Details
    Publication Date: 2006-01-11
    Description: Results are presented from a study of the region of anomalous cosmic radiation in the area of the Brazilian magnetic anomaly at the altitudes 250-500 km, using data measurements taken on the Kosmos-225 satellite (14-29 June 1968). The existence of a stable intensity anomaly discovered in the experiments on the second and third Soviet spacecraft-satellites is confirmed. The total vector of the geomagnetic field at different altitudes was compared with isoline maps. An altitude profile of the South Atlantic anomaly of radiation intensity was obtained, using data from the same instrument. The nature of the anomalies in cosmic radiation intensity over the regions of negative magnetic anomalies is discussed.
    Keywords: SPACE RADIATION
    Type: Space Res. in the Ukraine, No. 3 (NASA-TT-F-15537); p 86-94
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    NASA TECHNICAL REPORTS
  • 5
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    Acceleration of solar cosmic rays during chromospheric flares (1974)
    In:  CASI
    Details
    Publication Date: 2006-01-11
    Description: Using the Fokker-Planck equation, an examination is made of the acceleration of charged particles by fluctuational electric fields caused by the propagation of intense radio emission in the long-wave range. Correlation functions of electric fields near the boundary of plasma instability were computed. The interaction of charged particles with these fields is examined. It is shown that due to the interaction of particles with fluctuational fields, solar cosmic rays can be accelerated to energies of E=100 to 1000 MeV.
    Keywords: SPACE RADIATION
    Type: Space Res. in the Ukraine, No. 3 (NASA-TT-F-15537); p 69-76
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    NASA TECHNICAL REPORTS
  • 6
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    Chromospheric flares and sudden commencements of geomagnetic storms (1974)
    In:  CASI
    Details
    Publication Date: 2006-01-11
    Description: A catalogue of flare activity was compiled during 1957-1967 (the solar activity cycle). By comparing all reliable SC during this period with chromospheric flares, the following conclusions are drawn; (1) There is no statistically significant correlation between SC and chromospheric flares. (2) The assumption that a shock wave propagates throughout the entire hemisphere is unjustified and contradicts the fact of recurrence of SC. (3) A statistically significant correlation was established between SC and chromospheric flares, that is, a relationship between a SC and the moment that a flare active region transits the Central Meridian. (4) SC are caused by shock waves or tangential discontinuities formed at the western boundary of the quasisteady directed corpuscular flux or at the boundary between sectors.
    Keywords: SPACE RADIATION
    Type: Space Res. in the Ukraine, No. 3 (NASA-TT-F-15537); p 61-68
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    NASA TECHNICAL REPORTS
  • 7
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    Application of advanced signal processing techniques to the rectification and registration of spaceborne imagery (1974)
    In:  CASI
    Details
    Publication Date: 2006-05-07
    Description: The development of an ERTS/MSS image processing system responsive to the needs of the user community is discussed. An overview of the TRW ERTS/MSS processor is presented, followed by a more detailed discussion of image processing functions satisfied by the system. The particular functions chosen for discussion are evolved from advanced signal processing techniques rooted in the areas of communication and control. These examples show how classical aerospace technology can be transferred to solve the more contemporary problems confronting the users of spaceborne imagery.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Chamber of Commerce Proc. of the 1st 1974 Technol. Transfer Conf.; p 245-255
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    NASA TECHNICAL REPORTS
  • 8
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    The application of natural science data to land management decision-making (1974)
    In:  CASI
    Details
    Publication Date: 2006-05-07
    Description: A natural environmental analysis process which allows the decision maker to know the probable consequences of a decision prior to the act is developed. Emphasis is placed on the fit between the natural environment and the social, economic, and functional attributes of man's communities and the transition from nature in its present state to various forms and intensities of development. Applications of the analysis are examined. It is concluded that the analysis is a workable system for land use management.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Chamber of Commerce Proc. of the 1st 1974 Technol. Transfer Conf.; p 219-228
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    NASA TECHNICAL REPORTS
  • 9
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    Comment on satellite altimeter data (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: SKYLAB mission SEASAT-B altimeter observations in combination with surface gravity measurements provide useful data on the marine geoid and expected ocean perturbations from analyses of seamount structures.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA, Washington Seasat-A Sci. Contrib.; p 38
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    NASA TECHNICAL REPORTS
  • 10
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    Baring high-albedo soils by overgrazing - A hypothesized desertification mechanism (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Observations are reported of high-albedo soils denuded by overgrazing which appear bright, in high contrast to regions covered by natural vegetation. Measurements and modeling show that the denuded surfaces are cooler, when compared under sunlit conditions. This observed 'thermal depression' effect should, on theoretical grounds, result in a decreased lifting of air necessary for cloud formation and precipitation, and thus lead to regional climatic desertification.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Science; 186; Nov. 8
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    NASA TECHNICAL REPORTS
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