Global variations in the geoid/topography admittance of venus.

  title={Global variations in the geoid/topography admittance of venus.},
  author={Mark Simons and Bradford H. Hager and Sean C. Solomon},
  volume={264 5160},
Global representations of geoid height and topography are used to map variations in the geoid/topography ratio (admittance) of Venus. The admittance values are permissive of two mutually exclusive models for convection-driven topography. In the first, compressive highland plateaus are expressions of present mantle downwelling, broad volcanic rises are expressions of mantle upwelling, and lowlands overlie regions with no substantial vertical motion in the mantle. In the second, compressive… CONTINUE READING