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  • EARTH RESOURCES AND REMOTE SENSING  (156)
  • GEOPHYSICS  (121)
  • ASTROPHYSICS  (97)
  • Animals
  • 1980-1984
  • 1975-1979  (374)
  • 1977  (374)
  • 1
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    National geodetic satellite program, part 1 (1977)
    In:  CASI
    Details
    Publication Date: 2006-01-16
    Description: Equipment and techniques were evaluated operationally, by the Department of Defense, during the National Geodetic Satellite Program (NGSP). The theory, instrumentation, and data reduction methods used are described. Results obtained during the NGSP are given.
    Keywords: GEOPHYSICS
    Type: NASA, Washington Natl. Geodetic Satellite Program, Pt. 1; p 139-245
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Spectrum of the Kleinmann-Low nebula from 29 to 125 micrometers (1977)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: The infrared spectrum of the Kleinmann-Low nebula in M42 has been measured from 80 to 350 kaysers (approximately 29 to 125 microns) with a Michelson interferometer aboard the NASA Kuiper Airborne Observatory. The frequency spectrum peaks at about 185 kaysers. A simple model of the emission implies that the temperature is in the range 70-95 K and that the optical depth is at least 0.2 at the peak frequency. A possible absorption is seen at about 176 kaysers. Thermal emission by dust at a temperature of 71 K, with the absorption cross section proportional to frequency, provides a good fit to the data. Other thermal-emission models can also fit the spectrum. The data are compared with previous broad-band measurements. Upper limits are placed on expected line emission from the surrounding H II region at the position of the nebula.
    Keywords: ASTROPHYSICS
    Type: Astrophysical Journal; vol. 212
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Potential applications of digital, visible, and infrared data from geostationary environmental satellites (1977)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: An hourly, digital data base from the Visible/Infrared Spin-Scan Radiometer (VISSR) instrument on the GOES-1 and SMS-2 geostationary satellites is described. Several examples of developmental applications of these quantitative digital data are presented. These include a review of recent attempts to develop products that are of use to meteorologists who provide services to aviation, agriculture, forestry, hydrology, oceanography, and climatology. The sample products include high resolution thermal gradients of land and ocean surfaces, thermal change analyses, fruit frost/freeze application, cloud-top altitude analysis, analysis of hurricane characteristics, and analyses of solar insolation.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: ERIM Proc. of the 11th Intern. Symp. on Remote Sensing of Environment, Vol. 2; p 849-858
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    The micrometeoroid complex and evolution of the lunar regolith (1977)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: Monte Carlo-based computer calculations, as well as analytical approaches utilizing probabilistic arguments, were applied to gain insight into the principal regolith impact processes and their resulting kinetics. Craters 10 to 1500 m in diameter are largely responsible for the overall growth of the regolith. As a consequence the regolith has to be envisioned as a complex sequence of discrete ejecta blankets. Such blankets constitute first-order discontinuities in the evolving debris layer. The micrometeoroid complex then operates intensely on these fresh ejecta blankets and accomplishes only in an uppermost layer of approximately 1-mm thickness. The absolute flux of micrometeoroids based on lunar rock analyses averaged over the past few 10 to the 6th power years is approximately an order of magnitude lower than presentday satellite fluxes; however, there is indication that the flux increased in the past 10 to the 4th power years to become compatible with the satellite data. Furthermore, there is detailed evidence that the micrometeoroid complex existed throughout geologic time.
    Keywords: ASTROPHYSICS
    Type: The Soviet-Am. Conf. on Cosmochem. of the Moon and Planets, Pt. 2; p 605-635
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Cost benefit analysis of the transfer of NASA remote sensing technology to the state of Georgia (1977)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The author has identified the following significant results. First order benefits can generally be quantified, thus allowing quantitative comparisons of candidate land cover data systems. A meaningful dollar evaluation of LANDSAT can be made by a cost comparison with equally effective data systems. Users of LANDSAT data can be usefully categorized as performing three general functions: planning, permitting, and enforcing. The value of LANDSAT data to the State of Georgia is most sensitive to the parameters: discount rate, digitization cost, and photo acquisition cost. Under a constrained budget, LANDSAT could provide digitized land cover information roughly seven times more frequently than could otherwise be obtained. Thus on one hand, while the services derived from LANDSAT data in comparison to the baseline system has a positive net present value, on the other hand if the budget were constrained, more frequent information could be provided using the LANDSAT system than otherwise be obtained.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E78-10076 , NASA-CR-151615
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    Description and review of global measurements of atmospheric species from GASP (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: A large volume of atmospheric constituent data is being collected in the global airlanes by specially equipped B-747 aircraft. This NASA program also obtains data from the similarly equipped NASA CV-990 aircraft during dedicated flights such as a recent near pole-to-pole latitude survey mission. Aerosol composition data are also collected with a NASA F-106 aircraft. Present measurements include ozone, carbon monoxide, water vapor, aerosol and condensation nuclei number densities, sulphates, nitrates, and the chlorofluoromethanes. Meteorological and flight parameters are also recorded for use in data analysis. The present aircraft operations obtain data between 6 and 13.5 km from 65 deg N between Europe and the North Pacific, and from 23 deg S over South America and 42 deg S over New Zealand. Typical constituent data from the aircraft operations during the first one and a half years are presented. Instrumentation is discussed.
    Keywords: GEOPHYSICS
    Type: Conference on Air Quality Meteorology and Atmospheric Ozone; Jul 31, 1977 - Aug 06, 1977; Boulder, CO; US
    Format: text
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    NASA TECHNICAL REPORTS
  • 7
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    Description and review of global measurements of atmospheric species from GASP (1977)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Aerosol composition data were collected with a NASA F-106 aircraft. Present measurements include ozone, carbon monoxide, water vapor, aerosol and condensation nuclei number densities, sulphates, nitrates, and the chlorofluoromethanes. Meteorological and flight parameters are also recorded for use in data analysis. The present aircraft operations obtain data between 6 and 13.5 km from 65 degree N between Europe and the north Pacific, and from 23 degree S over South America and 42 degree S over New Zealand. Typical constituent data from the aircraft operations during the first one and a half years are presented. Instrumentation is discussed.
    Keywords: GEOPHYSICS
    Type: NASA-TM-73781 , E-9338 , Conf. on Air Quality Meteorology and Atmospheric Ozone; Jul 31, 1977 - Aug 06, 1977; Boulder, CO; United States
    Format: application/pdf
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  • 8
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    California coastal processes study, LANDSAT 2 (1977)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The authors have identified the following significant results. By using suspended sediments as tracers, objectives were met by qualitative definition of the nearshore circulation along the entire coast of California with special study sites at Humboldt Bay, the mouth of the Russian River, San Francisco Bay, Monterey Bay, and the Santa Barbara Channel. Although LANDSAT primarily imaged fines and silts in the surface waters, the distribution of sediments allowed an examination of upwelling, convergences and coastal erosion and deposition. In Monterey Bay and Humboldt Bay, these coastal phenomena were used to trace seasonal trends in surface currents.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E77-10158 , NASA-CR-153043
    Format: application/pdf
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  • 9
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    Velocity dispersions in galaxies. VI - Comparison of the nucleus and bulge of M31 (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Keywords: ASTROPHYSICS
    Type: Astrophysical Journal; vol. 212
    Format: text
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    NASA TECHNICAL REPORTS
  • 10
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    An analysis of the first two years of GASP data (1977)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Distributions of mean ozone levels from the first two years of data from the NASA Global Atmospheric Sampling Program (GASP) show spatial and temporal variations in agreement with previous measurements. The standard deviations of these distributions reflect the large natural variability of ozone levels in the altitude range of the GASP measurements. Monthly mean levels of ozone below the tropopause show an annual cycle with a spring maximum which is believed to result from transport from the stratosphere. Correlations of ozone with independent meteorological parameters, and meteorological parameters obtained by the GASP systems show that this transport occurs primarily through cyclogenesis at mid-latitudes.
    Keywords: GEOPHYSICS
    Type: NASA-TM-73817 , E-9406 , Joint Conf. on Sensing of Environmental Pollutants; Nov 06, 1977 - Nov 11, 1977; New Orleans, LA; United States
    Format: application/pdf
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