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Satellite laser ranging and geological constraints on plate motionSatellite laser ranging (SLR) observed baseline rates of change were measured and compared with rates determined from sea floor spreading rates and directions, and earth-quake solutions. With the number of years of observation now over six for many of the baselines, the inaccuracy of determining baseline rates of change has diminished so that in some cases it is less than a few mm per year. Thus, a direct comparison between baseline rates of change and rates of change established using geophysical information (called geological rates) is now feasible. In most cases, there is good agreement between the rates determined from SLR and geological rates, but in some cases there appear to be discrepancies. These discrepancies involve many of the data for which one end of the baseline is either Quincy (California), Huahine (French Polynesia), or Simosato (Japan). A method for looking at the discrepancies for these SLR observatories has been devised which makes it possible to calculate the motion not modeled by the geologic information.
Document ID
19920034076
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Harrison, C. G. A.
(Miami, University FL, United States)
Douglas, Nancy B.
(NASA Goddard Space Flight Center Greenbelt; Maryland, University, College Park, United States)
Date Acquired
August 15, 2013
Publication Date
October 1, 1990
Publication Information
Publication: Tectonics
Volume: 9
ISSN: 0278-7407
Subject Category
Geophysics
Accession Number
92A16700
Funding Number(s)
CONTRACT_GRANT: NAG5-741
Distribution Limits
Public
Copyright
Other

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