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Geodynamical value of historical geodetic measurements: A theoretical analysis

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Abstract

Historical geodetic measurements have been used to infer on the displacement and strain states locally or regionally. They are also often used to invert for other geophysical parameters. However, historical geodetic measurements have been known to contain significant scaling and orientation errors, which may even be different in different parts of a network. These significant error sources may result in producing a wrong (or at least, a misleading) displacement or strain field. When such a displacement or strain field is further used to invert certain geophysical parameters, mis-interpretations may be expected. Thus, in this paper, we will perform a theoretical analysis to answer the following three questions: (i) are displacements obtainable from historical geodetic data? (ii) are strains obtainable from historical geodetic data? and (iii) what geodynamical value do historical geodetic data have?

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Correspondence to Peiliang Xu.

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Keywords

  • Generalize Inverse
  • Crustal Deformation
  • Geodetic Data
  • Geodetic Network
  • Geodynamical Process