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  • GEOPHYSICS  (119)
  • ENERGY PRODUCTION AND CONVERSION  (63)
  • 1995-1999
  • 1980-1984
  • 1975-1979  (182)
  • 1976  (182)
  • 1
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    Atmospheric ozone measurements made from B-747 airliners - Spring 1975 (1976)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Atmospheric ozone in the upper troposphere and lower stratosphere north of the equator has been registered aboard two commercial B-747 airliners during the Spring of 1975. This monitoring is part of a much broader and continuing project developed by NASA and known as the Global Atmospheric Sampling Program (GASP). Additional flight and meteorological conditions have also been automatically recorded on board concurrent with the ozone measurements. Independently-derived tropopause pressure information was available from NMC data archives and was used to identify stratospheric and tropospheric flight. The composite ozone, flight and meteorological data are reported for selected dates in March, April, and May. Attention is drawn particularly to the vertical profiles of atmospheric ozone mixing ratio as a function of both distance from the tropopause and curvature of the streamlines. The GASP observations suggest that ozone levels typical of the lower stratosphere are often embedded in the upper troposphere, principally during occasions when cyclonic wind curvature was noted.
    Keywords: GEOPHYSICS
    Type: Joint Symposium on Atmospheric Ozone; Aug 09, 1976 - Aug 17, 1976; Dresden; Germany
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    NASA TECHNICAL REPORTS
  • 2
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    Atmospheric ozone measurements made from B-747 AIRLINERS: Spring 1975 (1976)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Atmospheric ozone in the upper troposphere and lower stratosphere north of the equator has been registered aboard two commercial B-747 airliners. The composite ozone, flight and meteorological data are reported. Attention is drawn particularly to the vertical profiles of atmospheric ozone mixing ratio as a function of both distance from the tropopause and curvature of the streamlines. The GASP observations suggest that ozone levels typical of the lower stratosphere are often embedded in the upper troposphere, principally during occassions when cyclonic wind curvature was noted.
    Keywords: GEOPHYSICS
    Type: NASA-TM-X-73675 , Joint Symp. on Atmospheric Ozone; Aug 09, 1976 - Aug 17, 1976; Dresden
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Dip coating process: Silicon sheet growth development for the large-area silicon sheet task of the low-cost silicon solar array project (1976)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The technical and economic feasibility of producing solar cell quality sheet silicon by dip-coating one surface of carbonized ceramic substrates with a thin layer of large grain polycrystalline silicon was investigated. The dip-coating methods studied were directed toward a minimum cost process with the ultimate objective of producing solar cells with a conversion efficiency of 10% or greater. The technique shows excellent promise for low cost, labor-saving, scale-up potentialities and would provide an end product of sheet silicon with a rigid and strong supportive backing. An experimental dip-coating facility was designed and constructed, several substrates were successfully dip-coated with areas as large as 25 sq cm and thicknesses of 12 micron to 250 micron. There appears to be no serious limitation on the area of a substrate that could be coated. Of the various substrate materials dip-coated, mullite appears to best satisfy the requirement of the program. An inexpensive process was developed for producing mullite in the desired geometry.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA-CR-149242 , ERDA/JPL-954356-76/2 , AR-1
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    NASA TECHNICAL REPORTS
  • 4
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    Geodynamics experiment MA-128 (1976)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: The Apollo Soyuz Test Project Geodynamics Experiment was performed to assess the feasibility of tracking and recovering high frequency components of the earth gravity field by utilizing a synchronous orbiting tracking station such as Applications Technology Satellite 6. Two prime areas of data collection were selected for this experiment. The first area is the center of the African continent, and the second area is the Indian Ocean depression centered at latitude 5 N and longitude 75 E. Preliminary results show that the detectability objective of the experiment has been achieved in both areas as well as in several additional anomalous areas around the globe. Gravity anomalies of the Karakoram and Himalayan mountain ranges of ocean trenches, and of the Diamantina depth are specific examples.
    Keywords: GEOPHYSICS
    Type: Apollo-Soyuz Test Project; 16 p
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    NASA TECHNICAL REPORTS
  • 5
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    Measurements of atmospheric ozone made from a GASP-equipped 747 airliner Mid-March, 1975 (1976)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: This paper presents data on the ozone mixing ratio, static air temperature, wind speed, and wind direction obtained at altitudes from 8 to 12 km during several flights of a commercial airliner equipped with a fully automated air-sampling system developed for the NASA Global Atmospheric Sampling Program (GASP). The objectives of GASP are reviewed, and the data-gathering techniques are described. Two data sets are discussed which illustrate variations of the upper-tropospheric and lower-stratospheric ozone mixing ratios as a function of geographical location and aircraft altitude. Good agreement is found between the GASP data and the tropopause height obtained from National Meteorological Center gridded data.
    Keywords: GEOPHYSICS
    Type: Geophysical Research Letters; 3; Feb. 197
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    NASA TECHNICAL REPORTS
  • 6
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    Direct measurements of natural tropospheric levels of OH via an aircraft borne tunable dye laser (1976)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Keywords: GEOPHYSICS
    Type: Geophysical Research Letters; 3; June 197
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    NASA TECHNICAL REPORTS
  • 7
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    Comparison of periodic and other characteristics of geomagnetic and meterological rocket data (1976)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The temporal variations in stratospheric winds and temperatures with the geomagnetic field elements were compared. From a periodic analysis of the geomagnetic field elements the amplitude and phase of the quasibiennial, annual, and semiannual waves are given for stations from 1 degree S to 89 degree N. These results are then compared with corresponding waves reported in rocketsonde wind and temperature data. The annual waves are found to be coupled as a result of the annual variation in the dynamo effect of the wind in the lower ionosphere. The semiannual waves are also found to be coupled and three possible causes for the extra tropical stratospheric semiannual wind wave are discussed. Time variance spectra for the interval from 4 days to 44 days in both zonal winds and horizontal geomagnetic field intensity are compared for years when major midwinter warmings occur and years when only minor warmings occur. The noted differences are suggested to arise from upward propagating planetary waves which are absorbed or refracted in varying amounts depending on the prevailing circulation.
    Keywords: GEOPHYSICS
    Type: NASA-CR-141413
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 8
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    Determination of the O+/2P/ ionization frequency using satellite airglow and neutral composition data and its implications on the EUV solar flux (1976)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Keywords: GEOPHYSICS
    Type: Geophysical Research Letters; 3; Sept
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    NASA TECHNICAL REPORTS
  • 9
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    The influence of long-period dynamo region winds on the surface geomagnetic field elements (1976)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research; 81; Sept. 1
    Format: text
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    NASA TECHNICAL REPORTS
  • 10
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    Earth rotation measured by lunar laser ranging (1976)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: The estimated median accuracy of 194 single-day determinations of the earth's angular position in space is 0.7 millisecond (0.01 arc second). Comparison with classical astronomical results gives agreement to about the expected 2-millisecond uncertainty of the 5-day averages obtained by the Bureau International de l'Heure. Little evidence for very rapid variations in the earth's rotation is present in the data.
    Keywords: GEOPHYSICS
    Type: Science; 193; Sept. 10
    Format: text
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    NASA TECHNICAL REPORTS
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