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  • EARTH RESOURCES AND REMOTE SENSING  (2)
  • GEOPHYSICS  (2)
  • 1975-1979  (4)
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  • 1
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    Observational and theoretical evidence in support of a significant in-situ photochemical source of tropospheric ozone (1979)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: The latitudinal and seasonal variation of ozone in the troposphere is discussed. Of particular interest is the asymmetrical behavior of this gas with respect to the two hemispheres. These asymmetries, when coupled with a diagnostic photochemical model of the troposphere, lends support to the view that ozone cannot be viewed as an inert tracer of stratospheric origin. In the calculations it is noted that it is likely that the budgets of carbon monoxide and tropospheric ozone may be quite dependent on each other and the calculations are discussed in light of the uncertainty which currently exists about representative global tropospheric background concentrations of the nitrogen oxides. In addition, the seasonal variation of excess (C-14)O2 (a stratospheric tracer) is examined and compared with the seasonal ozone variation during the same period of observations at the same location and altitudes. The distinct maxima for ozone found during the summer in the lower troposphere are not present for the (C-14)O2 data. This finding likewise suggests that photochemical processes taking place in the troposphere are an important source term for tropospheric ozone.
    Keywords: GEOPHYSICS
    Type: Tellus; 13; Oct. 197
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Tectonic stress in the plates (1979)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: In the present paper, the basic set of global intraplate stress orientation data is plotted and tabulated. Although the global intraplate stress field is complicated, several large-scale patterns can be seen. Much of stable North America is characterized by an E-W to NE-SW trend for the maximum compressive stress. South American lithosphere beneath the Andes, and perhaps farther east in the stable interior, has horizontal compressive stresses trending E-W to NW-SE. Western Europe north of the Alps is characterized by a NW-SE trending maximum horizontal compression, while Asia has the maximum horizontal compressive stress trending more nearly N-S, especially near the Himalayan front.
    Keywords: GEOPHYSICS
    Type: Reviews of Geophysics and Space Physics; 17; Aug. 197
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    An economic analysis of five selected LANDSAT assisted information systems in Oregon (1979)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A comparative cost analysis was performed on five LANDSAT-based information systems. In all cases, the LANDSAT system was found to have cost advantages over its alternative. The information sets generated by LANDSAT and the alternative method are not identical but are comparable in terms of satisfying the needs of the sponsor. The information obtained from the LANDSAT system in some cases is said to lack precision and detail. On the other hand, it was found to be superior in terms of providing information on areas that are inaccessible and unobtainable through conventional means. There is therefore a trade-off between precision and detail, and considerations of costs. The projects examined were concerned with locating irrigation circles in Morrow County; monitoring tansy ragwort infestation; inventoring old growth Douglas fir near Spotted Owl habitats; inventoring vegetation and resources in all state-owned lands; and determining and use for Columbia River water policies.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA-CR-162434 , BCL-OA-TFR-79-5
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Tectonic stress: Models and magnitudes (1979)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: There are no author-identified significant results in this report.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E79-10296 , NASA-CR-162327 , USGS Conf. on the Magnitude of Deviatoric Stresses in the Earth''s Crust and Upper Mantle; Jul 29, 1979 - Aug 02, 1979; Carmel, CA; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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