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  • 1
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    The lunar laser ranging experiment (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: With data from two or more well-located observing stations, the lunar range can be corrected accurately for the effects of polar motion and fluctuations in the earth's rotation rate. Very accurate corrections can be made for the earth tides at each station. It appears that the use of lasers giving roughly 0.1-msec pulse lengths is highly desirable. With them, single-shot ranging accuracies of about 3 cm are expected. The actual lunar range results will be analyzed by fitting a numerical integration for the lunar motion to the data. A mathematical model for lunar range is given. Tests of the theory of gravitation are considered.
    Keywords: MASERS
    Type: JPL Proc. of the Conf. on Exptl. Tests of Gravitation Theories; p 178-181
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Benefits to the study of oceanic tectonics expected from Seasat-A (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: A more detailed gravity field such as provided by the SEASAT-A altimeter would help resolve several problems of marine geology, such as the relationship of spreading rises to convective upstreams and the tectonics of subduction zones and the associated marginal basins. In addition, the gravity field should be measured in more detail over continental shelves accessible to mineral exploration. A secondary contribution of SEASAT-A would be to sedimentation processes, through its influence on models of ocean currents.
    Keywords: OCEANOGRAPHY
    Type: NASA, Washington Seasat-A Sci. Contrib.; p 70-73
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Preliminary results of laser ranging to a reflector on the lunar surface (1970)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Apollo lunar laser ranging experiment /LURE/ for range measurements from earth to lunar surface
    Keywords: MASERS
    Type: COSPAR, PLENARY MEETING, 13TH; May 20, 1970 - May 29, 1970; LENINGRAD; USSR
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Studies of oceanic tectonics based on GEOS-3 satellite altimetry (1979)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Using statistical analysis, geoidal admittance (the relationship between the ocean geoid and seafloor topography) obtained from GEOS-3 altimetry was compared to various model admittances. Analysis of several altimetry tracks in the Pacific Ocean demonstrated a low coherence between altimetry and seafloor topography except where the track crosses active or recent tectonic features. However, global statistical studies using the much larger data base of all available gravimetry showed a positive correlation of oceanic gravity with topography. The oceanic lithosphere was modeled by simultaneously inverting surface wave dispersion, topography, and gravity data. Efforts to incorporate geoid data into the inversion showed that the base of the subchannel can be better resolved with geoid rather than gravity data. Thermomechanical models of seafloor spreading taking into account differing plate velocities, heat source distributions, and rock rheologies were discussed.
    Keywords: OCEANOGRAPHY
    Type: NASA-CR-156854
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    National Geodetic Satellite Program, Part II: University of California, Los Angeles (1977)
    In:  CASI
    Details
    Publication Date: 2019-08-14
    Description: Satellite orbit analyses are presented which were undertaken for: (1) reasons of insight and economy; (2) obtaining geophysically interesting tesseral harmonics; (3) comparing effects of tracking station location error drag, radiation pressure, and luni-solar attraction to tesseral harmonic effects; and (4) combination of satellite and terrestrial data. The analyses were divided into the following phases: (1) MINITRACK interferometry; early Baker-Nunn camera directions; (2) late Baker-Nunn camera directions; and (3) combined Baker-Nunn camera and TRANET Doppler data.
    Keywords: Geophysics
    Type: National Geodetic Satellite Program, Part II: A Report Compiled and Edited for NASA by the AGU; 943-948
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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