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  • EARTH RESOURCES AND REMOTE SENSING  (3,646)
  • GEOPHYSICS  (2,227)
  • 1975-1979  (5,873)
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Years
Year
  • 1
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    Overview - Electric fields (1979)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: The electric fields session is designed to review progress in observation, theory, and modeling of magnetospheric electric fields, and to expose important new results. The present report comments on the state and prospects of electric field research, with particular emphasis on relevance to quantitative modeling of the magnetospheric processes. Attention is given to underlying theories and models. Modeling philosophy is discussed relative to explanatory models and representative models. Modeling of magnetospheric electric fields, while in its infancy, is developing rapidly on many fronts employing a variety of approaches. The general topic of magnetospheric electric fields is becoming of prime importance in understanding space plasmas.
    Keywords: GEOPHYSICS
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Lightning apparent source of environmentally important gases (1979)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Keywords: GEOPHYSICS
    Type: NASA-NEWS-RELEASE-79-131 , P79-10129
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Resource observations from space - Present and future (1978)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: The paper deals with some advances which have been made in the field of space remote sensing of the earth's natural resources and in the application of space techniques to the improvement of resource management and better understanding of the physical and dynamic nature of the earth. The current status and planned developments in the management of renewable and nonrenewable resources are reviewed.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: EASCON ''78; Electronics and Aerospace Systems Convention; Sep 25, 1978 - Sep 27, 1978; Arlington, VA
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    LACIE (Large Area Crop Inventory Experiment) Programme (1978)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: Large Area Crop Inventory Experiment was a three year experiment conducted jointly by the United States Department of Agriculture, NASA, and NOAA (National Oceanic and Atmospheric Administration) to determine if global wheat production can be forecast from LANDSAT data to within 90% of actual yield for each observed 9 years out of 10. Data for the third crop year (1976-1977) was compiled. The proportional area of cultivated land devoted to wheat was estimated based on a statistical sampling of LANDSAT data. Yield is presently estimated by NOAA using regression models developed from historical weather and yield information. Results are discussed.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: ESA Earth Observation from Space and Management of Planetary Resources; p 13-16
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Application of space technology to crustal dynamics and earthquake research (1979)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: In cooperation with other Federal government agencies, and the governments of other countries, NASA is undertaking a program of research in geodynamics. The present program activities and plans for extension of these activities in the time period 1979-1985 are described. The program includes operation of observatories for laser ranging to the Moon and to artificial satellites, and radio observatories for very long baseline microwave interferometry (VLBI). These observatories are used to measure polar motion, earth rotation, and tectonic plate movement, and serve as base stations for mobile facilities. The mobile laser ranging and VLBI facilities are used to measure crustal deformation in tectonically active areas.
    Keywords: GEOPHYSICS
    Type: NASA-TP-1464
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    Lightning as an indication of storm severity (1979)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: There is a substantial case for the theory that cloud electrification is related primarily to strong convection and the sizeable relative air motion that it implies; therefore, the electrification and subsequent discharge rates can be related to the air motion environment of thunderstorms. The isoceraunic contour map used by the WMO for observing and measuring thunderstorm occurrence contains no information on flash rates, flash density, flash relationship to storm severity, or flash variation with meteorological environment. A constant-view geosynchronous lightning mapper would permit simultaneous studies of the lightning discharge patterns and the meteorological environment of storms, thus establishing whether or not there is a reliable enough relationship to use the observed flash rates and characteristics as supplemental guidance for storm forecast refinement.
    Keywords: GEOPHYSICS
    Type: NASA. Marshall Space Flight Center Proc.: Workshop on the Need for Lightning Observations from Space; p 153-155
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    NASA TECHNICAL REPORTS
  • 7
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    Earth resources: A continuing bibliography with indexes, issue 21 (1979)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: A bibliography list of 369 reports, articles, and other documents introduced into the NASA scientific and technical information system between January 1, 1979 and March 31, 1979 is presented. Emphasis is placed on the use of remote sensing and geophysical instrumentation in spacecraft and aircraft to survey and inventory natural resources and urban areas. Subject matter is grouped according to agriculture and forestry, environmental changes and cultural resources, geodesy and cartography, geology and mineral resources, hydrology and water management, data processing and distribution systems, instrumentation and sensors, and economic analysis.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA-SP-7041(21)
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 8
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    Remote sensing (1979)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: Various imaging techniques are outlined for use in mapping, land use, and land management in Mexico. Among the techniques discussed are pattern recognition and photographic processing. The utilization of information from remote sensing devices on satellites are studied. Multispectral band scanners are examined and software, hardware, and other program requirements are surveyed.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA-TM-75651
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 9
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    The LANDSAT program: The present and prospects (1978)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: The LANDSAT program is described and the benefits derived from it are pointed out. The successive LANDSAT launchings and its respective equipment are discussed. The earth's surface covering, the techniques of relaying the information to the ground, a description of the LANDSAT D system, a comparison between the multispectral scanner on LANDSAT C and the MSS on LANDSAT D, and information about the regions of the electromagnetic spectrum covered by LANDSAT C and LANDSAT D are discussed.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: ESA Earth Observation from Space and Management of Planetary Resources; p 187-195
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    NASA TECHNICAL REPORTS
  • 10
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    Earth Resources: A continuing bibliography with indexes, issue 20 (1979)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: This bibliography lists 273 reports, articles, and other documents introduced into the NASA scientific and technical information system between October 1 and December 31, 1978. Emphasis is placed on the use of remote sensing and geophysical instrumentation in spacecraft and aircraft to survey and inventory natural resources and urban areas. Subject matter is grouped according to agriculture and forestry, environmental changes and cultural resources, geodesy and cartography, geology and mineral resources, hydrology and water management, data processing and distribution systems, instrumentation and sensors, and economic analysis.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA-SP-7041(20)
    Format: application/pdf
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