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  • GEOPHYSICS  (2,353)
  • 1970-1974  (2,353)
  • 1973  (2,353)
  • 1
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    The Development of a Stochastic Model of the Atmosphere Between 30 and 90 Km to Be Used in Determining the Effect of Atmospheric Variability on Space Shuttle Entry Parameters (1973)
    In:  CASI
    Details
    Publication Date: 2019-08-14
    Description: A stochasitc model of the atmosphere between 30 and 90 km was developed for use in Monte Carlo space shuttle entry studies. The model is actually a family of models, one for each latitude-season category as defined in the 1966 U.S. Standard Atmosphere Supplements. Each latitude-season model generates a pseudo-random temperature profile whose mean is the appropriate temperature profile from the Standard Atmosphere Supplements. The standard deviation of temperature at each altitude for a given latitude-season model was estimated from sounding-rocket data. Departures from the mean temperature at each altitude were produced by assuming a linear regression of temperature on the solar heating rate of ozone. A profile of random ozone concentrations was first generated using an auxiliary stochastic ozone model, also developed as part of this study, and then solar heating rates were computed for the random ozone concentrations.
    Keywords: GEOPHYSICS
    Type: NASA-TM-X-69567
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Use of ERTS Data for Mapping Snow Cover in the Western United States (1973)
    In:  CASI
    Details
    Publication Date: 2019-08-14
    Description: The author has identified the following significant results. Results of the analysis of the initial sample of ERTS-1 data indicate that the MSS-5 spectral band is the most useful for detecting and mapping mountain snow cover. At the ERTS-1 resolution, snow cover can be readily detected in the MSS-5 band and can be distinguished from clouds. Snow line elevations have been mapped for five mountain areas. In one case for the Salt-Verde watershed in Arizona good agreement is observed between the location of the snow line as mapped from the ERTS-1 data and as depicted on an aerial snow survey chart compiled a week earlier. Examination of data from the Arctic has revealed that multispectral data can provide information on glacial conditions that cannot be ascertained from observations in a single spectral band.
    Keywords: GEOPHYSICS
    Type: E73-10087 , NASA-CR-130336 , P-407-3
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Remote sensing and water resources - U.S. Space Program (1973)
    In:  Other Sources
    Details
    Publication Date: 2019-08-13
    Description: Since the launch of TIROS I in 1960, the utility of remote sensing from orbit for monitoring the earth's weather has been conclusively demonstrated. The past decade has also seen progress in applying remote sensing to the observation of terrestrial features. Variations in snow and ice cover, surface water, river and lake turbidity, and other hydrological features are now being accurately observed from orbital altitudes by the Earth Resources Technology Satellite (ERTS-1), NOAA-2, and Nimbus 5. Satellite visible, infrared and microwave measurements will be continued over the next few years, with improved spatial and spectral accuracy, by Skylab, ERTS-B, and Nimbus F. Delineations of soil and snow moisture variations, thermal patterns in lakes and estuaries, and regions of heavy precipitation are among the results anticipated.
    Keywords: GEOPHYSICS
    Type: Symposium on Remote sensing and water resources management; Jun 11, 1973 - Jun 14, 1973; Ontario; Canada
    Format: text
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  • 4
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    Results of the 1971 Corn Blight Watch experiment. (1973)
    In:  Other Sources
    Details
    Publication Date: 2019-08-13
    Description: The objective of the experiment was to evaluate the use of advanced remote sensing techniques to detect the development and spread of southern corn leaf blight during the growing season across the Corn Belt region. The sampling plan involved the selection of the study area, the determination of the flightline, and the determination of a field sample design. Aspects of data acquisition are discussed, giving attention to ground data collection and aerial data collection. Details of data flow are considered along with data analysis procedures and corn blight records. The experiment results are examined, taking into account photointerpretation results, the machine analysis of multispectral scanner data results, the influence of blight on yields, and questions of crop identification.
    Keywords: GEOPHYSICS
    Type: International Symposium on Remote Sensing of Environment; Oct 02, 1972 - Oct 06, 1972; Ann Arbor, MI
    Format: text
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  • 5
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    ERTS-1 - Toward global monitoring. (1973)
    In:  Other Sources
    Details
    Publication Date: 2019-08-13
    Description: The satellite has a near-polar orbit with a mean altitude of about 547 n. mi. On the average six million square kilometers are mapped daily. The multispectral scanner and other essential systems on board the satellite have suffered no detectable degradation since the early failures of a circuit switch and one of the two tape recorders. A year of ERTS-1 experience has shown that many applications can be mechanized with the present instrumentation. New investigations planned for future satellites are discussed, giving attention to pollution monitoring, geological studies, heat-balance surveys, and the analysis of damage caused by storms and earthquakes.
    Keywords: GEOPHYSICS
    Type: Astronautics and Aeronautics; 11; Sept
    Format: text
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  • 6
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    Earth Resources Technology Satellite-1 Symposium Proceedings, 29 September 1972 (1973)
    In:  CASI
    Details
    Publication Date: 2019-07-27
    Description: Papers presented to the symposium on ERTS-1 are reported. The performance of sensors and systems, and applications of ERTS-1 imagery are discussed.
    Keywords: GEOPHYSICS
    Type: NASA-TM-X-66193 , X-650-73-10 , Md.; Greenbelt
    Format: application/pdf
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  • 7
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    Mapping northern Atlantic coastal marshlands, Maryland-Virginia, using ERTS imagery (1973)
    In:  CASI
    Details
    Publication Date: 2019-07-27
    Description: The author has identified the following significant results. ERTS-1 data provides repetitive synoptic coverage for DC 00000 of wetland ecology, detection of change, and mapping or inventory of wetland boundaries and plant communities. ERTS-1 positive transparencies of Atlantic Coastal wetlands were enlarged to different scales and mapped using a variety of methods. Results of analysis indicate: (1) mapping of wetland boundaries and vegetative communities from imagery at a scale of 1:1,000,000 is impractical because small details are difficult to illustrate; (2) mapping to a scale of 1:250,000 is practical for defining land-water interface, upper wetland boundary, gross vegetative communities, and spoil disposal/dredge and fill operations; (3) 1:125,000 enlargements provide additional information on transition zones, smaller plant communities, and drainage or mosquito ditching. Overlays may be made directly from prints.
    Keywords: GEOPHYSICS
    Type: E73-10363 , NASA-CR-130996 , Remote Sensing Conf; Tenn. Univ.; Tenn. Univ; united States
    Format: application/pdf
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  • 8
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    Mesoscale deformation of sea ice from satellite imagery (1973)
    In:  CASI
    Details
    Publication Date: 2019-07-27
    Description: There are no author-identified significant results in this report.
    Keywords: GEOPHYSICS
    Type: E73-11153 , NASA-CR-135741 , Interdisciplinary Symp. on Advanced Concepts and Tech. in the Study of Snow and Ice Resources; 2-6, Dec. 1973; Monterey, CA; United States
    Format: application/pdf
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  • 9
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    A study to explore the use of remote sensing to determine native arid plant distribution (1973)
    In:  CASI
    Details
    Publication Date: 2019-07-20
    Description: There are no author-identified significant results in this report.
    Keywords: GEOPHYSICS
    Type: E74-10256 , NASA-CR-136584
    Format: application/pdf
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  • 10
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    ERTS-1 data user investigation of the use of ERTS imagery in reservoir management and operation (1973)
    In:  CASI
    Details
    Publication Date: 2019-07-20
    Description: There are no author-identified significant results in this report.
    Keywords: GEOPHYSICS
    Type: E74-10223 , NASA-CR-136486 , PR-8
    Format: application/pdf
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