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  • Weitere Quellen  (5)
  • GEOPHYSICS  (5)
  • perturbation theory
  • 1975-1979  (1)
  • 1970-1974  (4)
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  • Weitere Quellen  (5)
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  • 1
    facet.materialart.
    Unbekannt
    In:  Other Sources
    Publikationsdatum: 2019-06-27
    Beschreibung: The main interaction of the earth's interior with the lithosphere is as a material source and sink. An absolute reference frame defined by minimizing the translational motion of tectonic plate boundaries differs by 0.6 cm/year from a frame defined by hot spot traces and by 0.4 cm/year from the frame defined by the most plausible model of drag forces on the plates. The rms absolute translational velocities are about 2 cm/year for ocean-ocean plate boundaries and 1.5 cm/year for ocean-continent plate boundaries. The close agreement between the source and sink and the drag-dependent definitions suggests that the lithosphere, as a stress guide, to some extent controls the locations of its sources and sinks.
    Schlagwort(e): GEOPHYSICS
    Materialart: Journal of Geophysical Research; 80; Jan. 10
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
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    In:  Other Sources
    Publikationsdatum: 2019-06-27
    Beschreibung: 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.
    Schlagwort(e): GEOPHYSICS
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
    Publikationsdatum: 2019-06-27
    Beschreibung: 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.
    Schlagwort(e): GEOPHYSICS
    Materialart: NASA-CR-140118
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
    facet.materialart.
    Unbekannt
    In:  CASI
    Publikationsdatum: 2019-06-27
    Beschreibung: Linking ocean tides to satellite orbits
    Schlagwort(e): GEOPHYSICS
    Materialart: NASA-CR-121641
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
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  • 5
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    Unbekannt
    In:  Other Sources
    Publikationsdatum: 2019-07-13
    Beschreibung: Space and astronomic methods applied to solid earth and ocean physics
    Schlagwort(e): GEOPHYSICS
    Materialart: ADVANCES IN DYNAMIC GRAVIMETRY, SYMPOSIUM ON DYNAMIC GRAVIMETRY; Mar 16, 1970 - Mar 17, 1970; FORT WORTH, TX
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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