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  • GEOPHYSICS  (4)
  • 1970-1974  (4)
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  • 1
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    Potentialities of lunar laser ranging for measuring tectonic motions. (1973)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: The lunar laser-ranging system at McDonald Observatory, Texas, is currently attaining accuracies of plus or minus 15 cm, and plus or minus 3 cm appears feasible. Numerical error analyses containing 97 parameters (35 of them for error sources) indicate that the plus or minus 3 cm system would measure station motions to plus or minus 1 cm/year accuracy within a year for east-west motions and within about 3 years for north-south. Furthermore, the correlations of station motions with other parameters are low, so that it is unlikely that the estimate is too optimistic because of modeling inadequacies of the error analysis.
    Keywords: GEOPHYSICS
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 2
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    Error analysis for station position from tracking of the Lageos satellite (1974)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The earth physics satellite systems error analysis program was applied to the problem of predicting the relative accuracy of station position determinations under varying orbital and observing geometries. The reference case consists of nine ground stations extending over 1500 km which lasers ranged to a LAGEOS satellite, with simultaneous Doppler tracking from a geosynchronous satellite for 16 days. Eleven variations from the reference case were tested. The results showed little sensitivity to whether the LAGEOS altitude is 3700 or 5690 km. More significant were the high inclination, and that LAGEOS was tracked by a geosynchronous satellite.
    Keywords: GEOPHYSICS
    Type: NASA-CR-140118
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Tidal theory and orbital perturbations (1971)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Linking ocean tides to satellite orbits
    Keywords: GEOPHYSICS
    Type: NASA-CR-121641
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Application of space and astronomic techniques to solid earth and ocean physics (1970)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Space and astronomic methods applied to solid earth and ocean physics
    Keywords: GEOPHYSICS
    Type: ADVANCES IN DYNAMIC GRAVIMETRY, SYMPOSIUM ON DYNAMIC GRAVIMETRY; Mar 16, 1970 - Mar 17, 1970; FORT WORTH, TX
    Format: text
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    NASA TECHNICAL REPORTS
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